From 187777e402789499900faa7778ed006cbdfaf937 Mon Sep 17 00:00:00 2001 From: Hans van Kranenburg Date: Wed, 13 Jul 2022 15:28:39 +0100 Subject: [PATCH] Import xen_4.14.5+24-g87d90d511c.orig.tar.xz [dgit import orig xen_4.14.5+24-g87d90d511c.orig.tar.xz] --- .gitarchive-info | 2 + .gitattributes | 1 + .gitignore | 418 + .gitlab-ci.yml | 7 + .hgignore | 329 + .hgsigs | 11 + .hgtags | 59 + .travis.yml | 88 + CHANGELOG.md | 36 + CODING_STYLE | 237 + CONTRIBUTING | 231 + COPYING | 416 + CREDITS | 16 + Config.mk | 268 + INSTALL | 369 + MAINTAINERS | 539 + Makefile | 330 + README | 209 + SUPPORT.md | 990 ++ autogen.sh | 12 + automation/build/Makefile | 19 + automation/build/README.md | 95 + automation/build/archlinux/current.dockerfile | 54 + automation/build/centos/6.dockerfile | 51 + automation/build/centos/7.2.dockerfile | 50 + automation/build/centos/7.dockerfile | 49 + automation/build/centos/CentOS-7.2.repo | 35 + .../build/debian/jessie-i386.dockerfile | 50 + 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xen/arch/arm/arm64/smc.S | 32 + xen/arch/arm/arm64/smpboot.c | 122 + xen/arch/arm/arm64/traps.c | 54 + xen/arch/arm/arm64/vfp.c | 62 + xen/arch/arm/arm64/vsysreg.c | 306 + xen/arch/arm/bootfdt.c | 477 + xen/arch/arm/configs/arm32_defconfig | 0 xen/arch/arm/configs/arm64_defconfig | 0 xen/arch/arm/configs/tiny64_defconfig | 37 + xen/arch/arm/cpuerrata.c | 736 + xen/arch/arm/cpufeature.c | 150 + xen/arch/arm/decode.c | 171 + xen/arch/arm/decode.h | 49 + xen/arch/arm/device.c | 94 + xen/arch/arm/domain.c | 1123 ++ xen/arch/arm/domain_build.c | 2587 ++++ xen/arch/arm/domctl.c | 218 + xen/arch/arm/dtb.S | 2 + xen/arch/arm/early_printk.c | 35 + xen/arch/arm/efi/Makefile | 4 + xen/arch/arm/efi/efi-boot.h | 615 + xen/arch/arm/efi/efi-dom0.c | 184 + xen/arch/arm/efi/runtime.h | 1 + xen/arch/arm/gic-v2.c | 1412 ++ xen/arch/arm/gic-v3-its.c | 1107 ++ xen/arch/arm/gic-v3-lpi.c | 581 + xen/arch/arm/gic-v3.c | 1916 +++ xen/arch/arm/gic-vgic.c | 481 + xen/arch/arm/gic.c | 504 + xen/arch/arm/guest_atomics.c | 91 + xen/arch/arm/guest_walk.c | 638 + xen/arch/arm/guestcopy.c | 162 + xen/arch/arm/hvm.c | 157 + xen/arch/arm/io.c | 206 + xen/arch/arm/irq.c | 708 + xen/arch/arm/kernel.c | 532 + xen/arch/arm/livepatch.c | 193 + xen/arch/arm/mem_access.c | 473 + xen/arch/arm/mm.c | 1653 ++ xen/arch/arm/monitor.c | 76 + xen/arch/arm/p2m.c | 2146 +++ xen/arch/arm/percpu.c | 84 + xen/arch/arm/physdev.c | 27 + xen/arch/arm/platform.c | 170 + xen/arch/arm/platform_hypercall.c | 69 + xen/arch/arm/platforms/Kconfig | 58 + xen/arch/arm/platforms/Makefile | 13 + xen/arch/arm/platforms/brcm-raspberry-pi.c | 56 + xen/arch/arm/platforms/brcm.c | 294 + xen/arch/arm/platforms/exynos5.c | 329 + xen/arch/arm/platforms/midway.c | 63 + xen/arch/arm/platforms/omap5.c | 176 + xen/arch/arm/platforms/rcar2.c | 68 + xen/arch/arm/platforms/seattle.c | 57 + xen/arch/arm/platforms/sunxi.c | 154 + xen/arch/arm/platforms/thunderx.c | 39 + xen/arch/arm/platforms/vexpress.c | 153 + xen/arch/arm/platforms/xgene-storm.c | 132 + xen/arch/arm/platforms/xilinx-zynqmp-eemi.c | 218 + xen/arch/arm/platforms/xilinx-zynqmp.c | 58 + xen/arch/arm/processor.c | 49 + xen/arch/arm/psci.c | 247 + xen/arch/arm/setup.c | 1021 ++ xen/arch/arm/shutdown.c | 72 + xen/arch/arm/smp.c | 42 + xen/arch/arm/smpboot.c | 542 + xen/arch/arm/sysctl.c | 34 + xen/arch/arm/tee/Kconfig | 10 + xen/arch/arm/tee/Makefile | 2 + xen/arch/arm/tee/optee.c | 1758 +++ xen/arch/arm/tee/tee.c | 98 + xen/arch/arm/time.c | 401 + xen/arch/arm/traps.c | 2313 +++ xen/arch/arm/vcpreg.c | 624 + xen/arch/arm/vgic-v2.c | 755 + xen/arch/arm/vgic-v3-its.c | 1572 ++ xen/arch/arm/vgic-v3.c | 1836 +++ xen/arch/arm/vgic.c | 737 + xen/arch/arm/vgic/Makefile | 5 + xen/arch/arm/vgic/vgic-init.c | 258 + xen/arch/arm/vgic/vgic-mmio-v2.c | 321 + xen/arch/arm/vgic/vgic-mmio.c | 643 + xen/arch/arm/vgic/vgic-mmio.h | 138 + xen/arch/arm/vgic/vgic-v2.c | 331 + xen/arch/arm/vgic/vgic.c | 977 ++ xen/arch/arm/vgic/vgic.h | 83 + xen/arch/arm/vm_event.c | 57 + xen/arch/arm/vpl011.c | 718 + xen/arch/arm/vpsci.c | 370 + xen/arch/arm/vsmc.c | 354 + xen/arch/arm/vtimer.c | 405 + xen/arch/arm/vuart.c | 149 + xen/arch/arm/vuart.h | 35 + xen/arch/arm/xen.lds.S | 255 + xen/arch/x86/Kconfig | 281 + xen/arch/x86/Kconfig.debug | 0 xen/arch/x86/Makefile | 275 + xen/arch/x86/Rules.mk | 10 + xen/arch/x86/acpi/Makefile | 4 + xen/arch/x86/acpi/boot.c | 754 + xen/arch/x86/acpi/cpu_idle.c | 1672 ++ xen/arch/x86/acpi/cpufreq/Makefile | 2 + xen/arch/x86/acpi/cpufreq/cpufreq.c | 666 + xen/arch/x86/acpi/cpufreq/powernow.c | 377 + xen/arch/x86/acpi/cpuidle_menu.c | 301 + xen/arch/x86/acpi/lib.c | 125 + xen/arch/x86/acpi/power.c | 498 + xen/arch/x86/acpi/wakeup_prot.S | 146 + xen/arch/x86/alternative.c | 435 + xen/arch/x86/apic.c | 1554 ++ xen/arch/x86/arch.mk | 71 + xen/arch/x86/asm-macros.c | 1 + xen/arch/x86/bitops.c | 101 + xen/arch/x86/boot/Makefile | 23 + xen/arch/x86/boot/build32.lds | 74 + xen/arch/x86/boot/build32.mk | 40 + xen/arch/x86/boot/cmdline.c | 349 + xen/arch/x86/boot/defs.h | 62 + xen/arch/x86/boot/edd.S | 173 + xen/arch/x86/boot/head.S | 784 + xen/arch/x86/boot/mem.S | 77 + xen/arch/x86/boot/mkelf32.c | 479 + xen/arch/x86/boot/reloc.c | 298 + xen/arch/x86/boot/trampoline.S | 283 + xen/arch/x86/boot/video.S | 1001 ++ xen/arch/x86/boot/video.h | 31 + xen/arch/x86/boot/wakeup.S | 162 + xen/arch/x86/boot/x86_64.S | 218 + xen/arch/x86/bzimage.c | 150 + xen/arch/x86/clear_page.S | 18 + xen/arch/x86/compat.c | 86 + xen/arch/x86/configs/pvshim_defconfig | 30 + xen/arch/x86/configs/x86_32_defconfig | 0 xen/arch/x86/configs/x86_64_defconfig | 0 xen/arch/x86/copy_page.S | 43 + xen/arch/x86/cpu/Makefile | 13 + xen/arch/x86/cpu/amd.c | 1027 ++ xen/arch/x86/cpu/centaur.c | 59 + xen/arch/x86/cpu/common.c | 946 ++ xen/arch/x86/cpu/cpu.h | 25 + xen/arch/x86/cpu/hygon.c | 83 + xen/arch/x86/cpu/intel.c | 526 + xen/arch/x86/cpu/intel_cacheinfo.c | 265 + xen/arch/x86/cpu/mcheck/Makefile | 11 + xen/arch/x86/cpu/mcheck/amd_nonfatal.c | 246 + xen/arch/x86/cpu/mcheck/barrier.c | 59 + xen/arch/x86/cpu/mcheck/barrier.h | 61 + xen/arch/x86/cpu/mcheck/mcaction.c | 151 + xen/arch/x86/cpu/mcheck/mcaction.h | 20 + xen/arch/x86/cpu/mcheck/mce-apei.c | 129 + xen/arch/x86/cpu/mcheck/mce.c | 1913 +++ xen/arch/x86/cpu/mcheck/mce.h | 228 + xen/arch/x86/cpu/mcheck/mce_amd.c | 344 + xen/arch/x86/cpu/mcheck/mce_amd.h | 7 + xen/arch/x86/cpu/mcheck/mce_intel.c | 1018 ++ xen/arch/x86/cpu/mcheck/mctelem.c | 558 + xen/arch/x86/cpu/mcheck/mctelem.h | 76 + xen/arch/x86/cpu/mcheck/non-fatal.c | 119 + xen/arch/x86/cpu/mcheck/util.c | 14 + xen/arch/x86/cpu/mcheck/util.h | 6 + xen/arch/x86/cpu/mcheck/vmce.c | 562 + xen/arch/x86/cpu/mcheck/vmce.h | 25 + xen/arch/x86/cpu/mcheck/x86_mca.h | 165 + xen/arch/x86/cpu/microcode/Makefile | 3 + xen/arch/x86/cpu/microcode/amd.c | 403 + xen/arch/x86/cpu/microcode/core.c | 799 + xen/arch/x86/cpu/microcode/intel.c | 357 + xen/arch/x86/cpu/microcode/private.h | 58 + xen/arch/x86/cpu/mtrr/Makefile | 2 + xen/arch/x86/cpu/mtrr/generic.c | 621 + xen/arch/x86/cpu/mtrr/main.c | 643 + xen/arch/x86/cpu/mtrr/mtrr.h | 46 + xen/arch/x86/cpu/mwait-idle.c | 1313 ++ xen/arch/x86/cpu/shanghai.c | 20 + xen/arch/x86/cpu/vpmu.c | 915 ++ xen/arch/x86/cpu/vpmu_amd.c | 613 + xen/arch/x86/cpu/vpmu_intel.c | 979 ++ xen/arch/x86/cpuid.c | 1163 ++ xen/arch/x86/crash.c | 214 + xen/arch/x86/debug.c | 187 + xen/arch/x86/delay.c | 29 + xen/arch/x86/desc.c | 107 + xen/arch/x86/dmi_scan.c | 796 + xen/arch/x86/dom0_build.c | 596 + xen/arch/x86/domain.c | 2311 +++ xen/arch/x86/domain_page.c | 353 + xen/arch/x86/domctl.c | 1651 ++ xen/arch/x86/e820.c | 702 + xen/arch/x86/efi/Makefile | 19 + xen/arch/x86/efi/buildid.ihex | 3 + xen/arch/x86/efi/check.c | 4 + xen/arch/x86/efi/efi-boot.h | 761 + xen/arch/x86/efi/mkreloc.c | 384 + xen/arch/x86/efi/relocs-dummy.S | 11 + xen/arch/x86/efi/runtime.h | 12 + xen/arch/x86/efi/stub.c | 85 + xen/arch/x86/emul-i8254.c | 607 + xen/arch/x86/extable.c | 208 + xen/arch/x86/flushtlb.c | 361 + xen/arch/x86/gdbstub.c | 88 + xen/arch/x86/genapic/Makefile | 5 + xen/arch/x86/genapic/bigsmp.c | 48 + xen/arch/x86/genapic/default.c | 26 + xen/arch/x86/genapic/delivery.c | 60 + xen/arch/x86/genapic/probe.c | 116 + xen/arch/x86/genapic/x2apic.c | 284 + xen/arch/x86/guest/Makefile | 4 + xen/arch/x86/guest/hyperv/Makefile | 3 + xen/arch/x86/guest/hyperv/hyperv.c | 238 + xen/arch/x86/guest/hyperv/private.h | 44 + xen/arch/x86/guest/hyperv/tlb.c | 214 + xen/arch/x86/guest/hyperv/util.c | 75 + xen/arch/x86/guest/hypervisor.c | 98 + xen/arch/x86/guest/xen/Makefile | 4 + xen/arch/x86/guest/xen/hypercall_page.S | 78 + xen/arch/x86/guest/xen/pvh-boot.c | 151 + xen/arch/x86/guest/xen/xen.c | 367 + xen/arch/x86/hpet.c | 987 ++ xen/arch/x86/hvm/Makefile | 31 + xen/arch/x86/hvm/asid.c | 159 + xen/arch/x86/hvm/dm.c | 809 + xen/arch/x86/hvm/dom0_build.c | 1269 ++ xen/arch/x86/hvm/domain.c | 344 + xen/arch/x86/hvm/emulate.c | 3097 ++++ xen/arch/x86/hvm/grant_table.c | 89 + xen/arch/x86/hvm/hpet.c | 792 + xen/arch/x86/hvm/hvm.c | 5423 +++++++ xen/arch/x86/hvm/hypercall.c | 347 + xen/arch/x86/hvm/intercept.c | 364 + xen/arch/x86/hvm/io.c | 580 + xen/arch/x86/hvm/ioreq.c | 1546 ++ xen/arch/x86/hvm/irq.c | 802 + xen/arch/x86/hvm/monitor.c | 311 + xen/arch/x86/hvm/mtrr.c | 909 ++ xen/arch/x86/hvm/nestedhvm.c | 192 + xen/arch/x86/hvm/pmtimer.c | 399 + xen/arch/x86/hvm/quirks.c | 97 + xen/arch/x86/hvm/rtc.c | 906 ++ xen/arch/x86/hvm/save.c | 436 + xen/arch/x86/hvm/stdvga.c | 641 + xen/arch/x86/hvm/svm/Makefile | 8 + xen/arch/x86/hvm/svm/asid.c | 72 + xen/arch/x86/hvm/svm/emulate.c | 182 + xen/arch/x86/hvm/svm/entry.S | 146 + xen/arch/x86/hvm/svm/intr.c | 234 + xen/arch/x86/hvm/svm/nestedsvm.c | 1715 +++ xen/arch/x86/hvm/svm/svm.c | 3053 ++++ xen/arch/x86/hvm/svm/svmdebug.c | 183 + xen/arch/x86/hvm/svm/vmcb.c | 305 + xen/arch/x86/hvm/vioapic.c | 743 + xen/arch/x86/hvm/viridian/Makefile | 3 + xen/arch/x86/hvm/viridian/private.h | 70 + xen/arch/x86/hvm/viridian/synic.c | 461 + xen/arch/x86/hvm/viridian/time.c | 603 + xen/arch/x86/hvm/viridian/viridian.c | 904 ++ xen/arch/x86/hvm/vlapic.c | 1673 ++ xen/arch/x86/hvm/vm_event.c | 140 + xen/arch/x86/hvm/vmsi.c | 922 ++ xen/arch/x86/hvm/vmx/Makefile | 6 + xen/arch/x86/hvm/vmx/entry.S | 152 + xen/arch/x86/hvm/vmx/intr.c | 435 + xen/arch/x86/hvm/vmx/realmode.c | 243 + xen/arch/x86/hvm/vmx/vmcs.c | 2176 +++ xen/arch/x86/hvm/vmx/vmx.c | 4584 ++++++ xen/arch/x86/hvm/vmx/vvmx.c | 2830 ++++ xen/arch/x86/hvm/vpic.c | 510 + xen/arch/x86/hvm/vpt.c | 676 + xen/arch/x86/hypercall.c | 284 + xen/arch/x86/i387.c | 398 + xen/arch/x86/i8259.c | 362 + xen/arch/x86/indirect-thunk.S | 54 + xen/arch/x86/io_apic.c | 2669 ++++ xen/arch/x86/ioport_emulate.c | 120 + xen/arch/x86/irq.c | 2962 ++++ xen/arch/x86/livepatch.c | 397 + xen/arch/x86/machine_kexec.c | 220 + xen/arch/x86/mm.c | 6345 ++++++++ xen/arch/x86/mm/Makefile | 21 + xen/arch/x86/mm/altp2m.c | 134 + xen/arch/x86/mm/guest_walk.c | 546 + xen/arch/x86/mm/hap/Makefile | 15 + xen/arch/x86/mm/hap/guest_walk.c | 150 + xen/arch/x86/mm/hap/hap.c | 893 ++ xen/arch/x86/mm/hap/nested_ept.c | 287 + xen/arch/x86/mm/hap/nested_hap.c | 291 + xen/arch/x86/mm/hap/private.h | 50 + xen/arch/x86/mm/mem_access.c | 542 + xen/arch/x86/mm/mem_paging.c | 500 + xen/arch/x86/mm/mem_sharing.c | 2196 +++ xen/arch/x86/mm/mm-locks.h | 396 + xen/arch/x86/mm/p2m-ept.c | 1432 ++ xen/arch/x86/mm/p2m-pod.c | 1385 ++ xen/arch/x86/mm/p2m-pt.c | 1131 ++ xen/arch/x86/mm/p2m.c | 2913 ++++ xen/arch/x86/mm/paging.c | 983 ++ xen/arch/x86/mm/shadow/Makefile | 16 + xen/arch/x86/mm/shadow/common.c | 3563 +++++ xen/arch/x86/mm/shadow/hvm.c | 701 + xen/arch/x86/mm/shadow/multi.c | 4902 ++++++ xen/arch/x86/mm/shadow/multi.h | 116 + xen/arch/x86/mm/shadow/none.c | 84 + xen/arch/x86/mm/shadow/private.h | 826 + xen/arch/x86/mm/shadow/pv.c | 75 + xen/arch/x86/mm/shadow/types.h | 385 + xen/arch/x86/monitor.c | 353 + xen/arch/x86/mpparse.c | 1118 ++ xen/arch/x86/msi.c | 1505 ++ xen/arch/x86/msr.c | 618 + xen/arch/x86/nmi.c | 615 + xen/arch/x86/numa.c | 511 + xen/arch/x86/oprofile/Makefile | 6 + xen/arch/x86/oprofile/backtrace.c | 160 + xen/arch/x86/oprofile/nmi_int.c | 471 + xen/arch/x86/oprofile/op_counter.h | 41 + xen/arch/x86/oprofile/op_model_athlon.c | 547 + xen/arch/x86/oprofile/op_model_p4.c | 721 + xen/arch/x86/oprofile/op_model_ppro.c | 344 + xen/arch/x86/oprofile/op_x86_model.h | 58 + xen/arch/x86/oprofile/xenoprof.c | 104 + xen/arch/x86/pci.c | 100 + xen/arch/x86/percpu.c | 112 + xen/arch/x86/physdev.c | 681 + xen/arch/x86/platform_hypercall.c | 831 + xen/arch/x86/psr.c | 1705 +++ xen/arch/x86/pv/Makefile | 18 + xen/arch/x86/pv/callback.c | 491 + xen/arch/x86/pv/descriptor-tables.c | 255 + xen/arch/x86/pv/dom0_build.c | 936 ++ xen/arch/x86/pv/domain.c | 498 + xen/arch/x86/pv/emul-gate-op.c | 419 + xen/arch/x86/pv/emul-inv-op.c | 92 + xen/arch/x86/pv/emul-priv-op.c | 1328 ++ xen/arch/x86/pv/emulate.c | 141 + xen/arch/x86/pv/emulate.h | 32 + xen/arch/x86/pv/gpr_switch.S | 57 + xen/arch/x86/pv/grant_table.c | 343 + xen/arch/x86/pv/hypercall.c | 347 + xen/arch/x86/pv/iret.c | 235 + xen/arch/x86/pv/misc-hypercalls.c | 182 + xen/arch/x86/pv/mm.c | 139 + xen/arch/x86/pv/mm.h | 165 + xen/arch/x86/pv/ro-page-fault.c | 409 + xen/arch/x86/pv/shim.c | 1020 ++ xen/arch/x86/pv/traps.c | 199 + xen/arch/x86/setup.c | 2114 +++ xen/arch/x86/shutdown.c | 683 + xen/arch/x86/smp.c | 398 + xen/arch/x86/smpboot.c | 1429 ++ xen/arch/x86/spec_ctrl.c | 1527 ++ xen/arch/x86/srat.c | 534 + xen/arch/x86/string.c | 68 + xen/arch/x86/sysctl.c | 490 + xen/arch/x86/tboot.c | 558 + xen/arch/x86/time.c | 2528 ++++ xen/arch/x86/trace.c | 159 + xen/arch/x86/traps.c | 2203 +++ xen/arch/x86/tsx.c | 293 + xen/arch/x86/usercopy.c | 185 + xen/arch/x86/vm_event.c | 307 + xen/arch/x86/x86_64/Makefile | 16 + xen/arch/x86/x86_64/acpi_mmcfg.c | 116 + xen/arch/x86/x86_64/asm-offsets.c | 173 + 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xen/common/COPYING | 16 + xen/common/Kconfig | 388 + xen/common/Makefile | 88 + xen/common/README.source | 50 + xen/common/argo.c | 2367 +++ xen/common/bitmap.c | 386 + xen/common/bsearch.c | 51 + xen/common/bunzip2.c | 733 + xen/common/compat/domain.c | 144 + xen/common/compat/grant_table.c | 350 + xen/common/compat/kernel.c | 53 + xen/common/compat/memory.c | 651 + xen/common/compat/multicall.c | 52 + xen/common/compat/xenoprof.c | 42 + xen/common/compat/xlat.c | 73 + xen/common/core_parking.c | 272 + xen/common/coverage/Makefile | 11 + xen/common/coverage/coverage.c | 73 + xen/common/coverage/coverage.h | 23 + xen/common/coverage/gcc_3_4.c | 367 + xen/common/coverage/gcc_4_7.c | 204 + xen/common/coverage/gcc_4_9.c | 33 + xen/common/coverage/gcc_5.c | 33 + xen/common/coverage/gcc_7.c | 30 + xen/common/coverage/gcov.c | 227 + xen/common/coverage/gcov.h | 40 + xen/common/coverage/gcov_base.c | 67 + xen/common/coverage/llvm.c | 154 + xen/common/cpu.c | 238 + xen/common/debugtrace.c | 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xen/drivers/vpci/msi.c | 344 + xen/drivers/vpci/msix.c | 564 + xen/drivers/vpci/vpci.c | 491 + xen/include/Makefile | 152 + xen/include/acpi/acconfig.h | 206 + xen/include/acpi/acexcep.h | 303 + xen/include/acpi/acglobal.h | 113 + xen/include/acpi/achware.h | 62 + xen/include/acpi/aclocal.h | 207 + xen/include/acpi/acmacros.h | 644 + xen/include/acpi/acnames.h | 83 + xen/include/acpi/acoutput.h | 185 + xen/include/acpi/acpi.h | 69 + xen/include/acpi/acpiosxf.h | 89 + xen/include/acpi/acpixf.h | 128 + xen/include/acpi/actables.h | 107 + xen/include/acpi/actbl.h | 361 + xen/include/acpi/actbl1.h | 1014 ++ xen/include/acpi/actbl2.h | 1258 ++ xen/include/acpi/actbl3.h | 641 + xen/include/acpi/actypes.h | 728 + xen/include/acpi/acutils.h | 199 + xen/include/acpi/apei.h | 34 + xen/include/acpi/cpufreq/cpufreq.h | 245 + xen/include/acpi/cpufreq/processor_perf.h | 63 + xen/include/acpi/pdc_intel.h | 50 + xen/include/acpi/platform/acenv.h | 365 + xen/include/acpi/platform/acgcc.h | 65 + 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| 74 + xen/include/asm-arm/vfp.h | 25 + xen/include/asm-arm/vgic-emul.h | 33 + xen/include/asm-arm/vgic.h | 381 + xen/include/asm-arm/vm_event.h | 61 + xen/include/asm-arm/vpl011.h | 89 + xen/include/asm-arm/vpsci.h | 42 + xen/include/asm-arm/vreg.h | 220 + xen/include/asm-arm/vtimer.h | 41 + xen/include/asm-arm/xenoprof.h | 12 + xen/include/asm-x86/acpi.h | 162 + xen/include/asm-x86/alternative-asm.h | 125 + xen/include/asm-x86/alternative.h | 386 + xen/include/asm-x86/altp2m.h | 57 + xen/include/asm-x86/amd.h | 154 + xen/include/asm-x86/apic.h | 202 + xen/include/asm-x86/apicdef.h | 134 + xen/include/asm-x86/asm_defns.h | 382 + xen/include/asm-x86/atomic.h | 239 + xen/include/asm-x86/bitops.h | 483 + xen/include/asm-x86/bug.h | 125 + xen/include/asm-x86/byteorder.h | 36 + xen/include/asm-x86/bzimage.h | 11 + xen/include/asm-x86/cache.h | 21 + xen/include/asm-x86/compat.h | 8 + xen/include/asm-x86/config.h | 316 + xen/include/asm-x86/cpufeature.h | 212 + xen/include/asm-x86/cpufeatures.h | 53 + xen/include/asm-x86/cpufeatureset.h | 40 + xen/include/asm-x86/cpuid.h | 81 + xen/include/asm-x86/cpuidle.h | 31 + xen/include/asm-x86/current.h | 193 + xen/include/asm-x86/debugger.h | 101 + xen/include/asm-x86/debugreg.h | 83 + xen/include/asm-x86/delay.h | 13 + xen/include/asm-x86/desc.h | 241 + xen/include/asm-x86/device.h | 25 + xen/include/asm-x86/div64.h | 14 + xen/include/asm-x86/dom0_build.h | 42 + xen/include/asm-x86/domain.h | 755 + xen/include/asm-x86/e820.h | 43 + xen/include/asm-x86/edd.h | 164 + xen/include/asm-x86/efibind.h | 2 + xen/include/asm-x86/elf.h | 20 + xen/include/asm-x86/endbr.h | 55 + xen/include/asm-x86/event.h | 56 + xen/include/asm-x86/fixmap.h | 118 + xen/include/asm-x86/flushtlb.h | 203 + xen/include/asm-x86/genapic.h | 86 + xen/include/asm-x86/grant_table.h | 75 + xen/include/asm-x86/guest.h | 39 + xen/include/asm-x86/guest/hyperv-hcall.h | 97 + xen/include/asm-x86/guest/hyperv-tlfs.h | 934 ++ xen/include/asm-x86/guest/hyperv.h | 86 + xen/include/asm-x86/guest/hypervisor.h | 85 + xen/include/asm-x86/guest/pvh-boot.h | 58 + xen/include/asm-x86/guest/xen-hcall.h | 212 + xen/include/asm-x86/guest/xen.h | 61 + xen/include/asm-x86/guest_access.h | 162 + xen/include/asm-x86/guest_atomics.h | 32 + xen/include/asm-x86/guest_pt.h | 468 + xen/include/asm-x86/hap.h | 59 + xen/include/asm-x86/hardirq.h | 37 + xen/include/asm-x86/hpet.h | 101 + xen/include/asm-x86/hvm/asid.h | 52 + xen/include/asm-x86/hvm/cacheattr.h | 23 + xen/include/asm-x86/hvm/domain.h | 218 + xen/include/asm-x86/hvm/emulate.h | 157 + xen/include/asm-x86/hvm/grant_table.h | 61 + xen/include/asm-x86/hvm/guest_access.h | 8 + xen/include/asm-x86/hvm/hvm.h | 812 + xen/include/asm-x86/hvm/io.h | 197 + xen/include/asm-x86/hvm/ioreq.h | 68 + xen/include/asm-x86/hvm/irq.h | 231 + xen/include/asm-x86/hvm/monitor.h | 65 + xen/include/asm-x86/hvm/nestedhvm.h | 101 + xen/include/asm-x86/hvm/save.h | 144 + xen/include/asm-x86/hvm/support.h | 167 + xen/include/asm-x86/hvm/svm/asid.h | 49 + xen/include/asm-x86/hvm/svm/emulate.h | 66 + xen/include/asm-x86/hvm/svm/intr.h | 25 + xen/include/asm-x86/hvm/svm/nestedsvm.h | 149 + xen/include/asm-x86/hvm/svm/svm.h | 110 + xen/include/asm-x86/hvm/svm/svmdebug.h | 30 + xen/include/asm-x86/hvm/svm/vmcb.h | 653 + xen/include/asm-x86/hvm/trace.h | 122 + xen/include/asm-x86/hvm/vcpu.h | 228 + xen/include/asm-x86/hvm/vioapic.h | 73 + xen/include/asm-x86/hvm/viridian.h | 104 + xen/include/asm-x86/hvm/vlapic.h | 157 + xen/include/asm-x86/hvm/vm_event.h | 34 + xen/include/asm-x86/hvm/vmx/vmcs.h | 685 + xen/include/asm-x86/hvm/vmx/vmx.h | 692 + xen/include/asm-x86/hvm/vmx/vvmx.h | 214 + xen/include/asm-x86/hvm/vpic.h | 40 + xen/include/asm-x86/hvm/vpt.h | 205 + xen/include/asm-x86/hypercall.h | 192 + xen/include/asm-x86/i387.h | 40 + xen/include/asm-x86/indirect_thunk_asm.h | 59 + xen/include/asm-x86/init.h | 4 + xen/include/asm-x86/invpcid.h | 67 + xen/include/asm-x86/io.h | 56 + xen/include/asm-x86/io_apic.h | 208 + xen/include/asm-x86/iocap.h | 21 + xen/include/asm-x86/iommu.h | 145 + xen/include/asm-x86/irq.h | 221 + xen/include/asm-x86/ldt.h | 35 + xen/include/asm-x86/livepatch.h | 25 + xen/include/asm-x86/mach-default/bios_ebda.h | 15 + xen/include/asm-x86/mach-default/io_ports.h | 30 + .../asm-x86/mach-default/irq_vectors.h | 43 + .../asm-x86/mach-default/mach_mpparse.h | 17 + .../asm-x86/mach-default/mach_mpspec.h | 10 + xen/include/asm-x86/mach-generic/mach_apic.h | 81 + .../asm-x86/mach-generic/mach_mpparse.h | 7 + xen/include/asm-x86/machine_kexec.h | 16 + xen/include/asm-x86/mc146818rtc.h | 116 + xen/include/asm-x86/mce.h | 49 + xen/include/asm-x86/mem_access.h | 68 + xen/include/asm-x86/mem_paging.h | 36 + xen/include/asm-x86/mem_sharing.h | 153 + xen/include/asm-x86/microcode.h | 27 + xen/include/asm-x86/mm.h | 657 + xen/include/asm-x86/monitor.h | 126 + xen/include/asm-x86/mpspec.h | 73 + xen/include/asm-x86/mpspec_def.h | 188 + xen/include/asm-x86/msi.h | 255 + xen/include/asm-x86/msr-index.h | 692 + xen/include/asm-x86/msr.h | 358 + xen/include/asm-x86/mtrr.h | 106 + xen/include/asm-x86/mwait.h | 16 + xen/include/asm-x86/nmi.h | 37 + xen/include/asm-x86/nops.h | 70 + xen/include/asm-x86/nospec.h | 39 + xen/include/asm-x86/numa.h | 84 + xen/include/asm-x86/p2m.h | 1042 ++ xen/include/asm-x86/page.h | 430 + xen/include/asm-x86/paging.h | 424 + xen/include/asm-x86/pci.h | 54 + xen/include/asm-x86/percpu.h | 22 + xen/include/asm-x86/perfc.h | 12 + xen/include/asm-x86/perfc_defn.h | 120 + xen/include/asm-x86/processor.h | 650 + xen/include/asm-x86/psr.h | 99 + xen/include/asm-x86/pv/domain.h | 134 + xen/include/asm-x86/pv/grant_table.h | 60 + xen/include/asm-x86/pv/mm.h | 58 + xen/include/asm-x86/pv/shim.h | 119 + xen/include/asm-x86/pv/traps.h | 71 + xen/include/asm-x86/random.h | 16 + xen/include/asm-x86/regs.h | 18 + xen/include/asm-x86/setup.h | 71 + xen/include/asm-x86/shadow.h | 271 + xen/include/asm-x86/shared.h | 49 + xen/include/asm-x86/shstk.h | 46 + xen/include/asm-x86/smp.h | 92 + xen/include/asm-x86/softirq.h | 15 + xen/include/asm-x86/spec_ctrl.h | 182 + xen/include/asm-x86/spec_ctrl_asm.h | 367 + xen/include/asm-x86/spinlock.h | 27 + xen/include/asm-x86/string.h | 24 + xen/include/asm-x86/system.h | 308 + xen/include/asm-x86/tboot.h | 160 + xen/include/asm-x86/time.h | 76 + xen/include/asm-x86/trace.h | 46 + xen/include/asm-x86/traps.h | 34 + xen/include/asm-x86/types.h | 44 + xen/include/asm-x86/uaccess.h | 288 + xen/include/asm-x86/vm_event.h | 57 + xen/include/asm-x86/vpmu.h | 144 + xen/include/asm-x86/x86-defns.h | 156 + xen/include/asm-x86/x86-vendors.h | 39 + xen/include/asm-x86/x86_64/efibind.h | 280 + xen/include/asm-x86/x86_64/elf.h | 90 + xen/include/asm-x86/x86_64/page.h | 192 + xen/include/asm-x86/x86_64/regs.h | 28 + xen/include/asm-x86/x86_64/system.h | 105 + xen/include/asm-x86/x86_64/uaccess.h | 84 + xen/include/asm-x86/x86_emulate.h | 21 + xen/include/asm-x86/xenoprof.h | 100 + xen/include/asm-x86/xstate.h | 141 + xen/include/crypto/README.source | 17 + xen/include/crypto/rijndael.h | 58 + xen/include/crypto/vmac.h | 172 + xen/include/efi/efiapi.h | 926 ++ xen/include/efi/eficapsule.h | 89 + xen/include/efi/eficon.h | 302 + xen/include/efi/efidef.h | 200 + xen/include/efi/efidevp.h | 402 + xen/include/efi/efierr.h | 67 + xen/include/efi/efipciio.h | 219 + xen/include/efi/efiprot.h | 728 + xen/include/public/COPYING | 38 + xen/include/public/arch-arm.h | 484 + xen/include/public/arch-arm/hvm/save.h | 39 + xen/include/public/arch-arm/smccc.h | 66 + xen/include/public/arch-x86/cpufeatureset.h | 315 + xen/include/public/arch-x86/cpuid.h | 118 + xen/include/public/arch-x86/hvm/save.h | 661 + xen/include/public/arch-x86/hvm/start_info.h | 159 + xen/include/public/arch-x86/pmu.h | 159 + xen/include/public/arch-x86/xen-mca.h | 448 + xen/include/public/arch-x86/xen-x86_32.h | 194 + xen/include/public/arch-x86/xen-x86_64.h | 241 + xen/include/public/arch-x86/xen.h | 384 + xen/include/public/arch-x86_32.h | 27 + xen/include/public/arch-x86_64.h | 43 + xen/include/public/argo.h | 255 + xen/include/public/callback.h | 121 + xen/include/public/device_tree_defs.h | 42 + xen/include/public/dom0_ops.h | 120 + xen/include/public/domctl.h | 1298 ++ xen/include/public/elfnote.h | 283 + xen/include/public/errno.h | 126 + xen/include/public/event_channel.h | 388 + xen/include/public/features.h | 129 + xen/include/public/grant_table.h | 687 + xen/include/public/hvm/dm_op.h | 480 + xen/include/public/hvm/e820.h | 38 + xen/include/public/hvm/hvm_info_table.h | 82 + xen/include/public/hvm/hvm_op.h | 395 + xen/include/public/hvm/hvm_vcpu.h | 144 + xen/include/public/hvm/hvm_xs_strings.h | 89 + xen/include/public/hvm/ioreq.h | 143 + xen/include/public/hvm/params.h | 305 + xen/include/public/hvm/pvdrivers.h | 49 + xen/include/public/hvm/save.h | 113 + xen/include/public/hypfs.h | 129 + xen/include/public/io/9pfs.h | 49 + xen/include/public/io/blkif.h | 722 + xen/include/public/io/cameraif.h | 1374 ++ xen/include/public/io/console.h | 56 + xen/include/public/io/displif.h | 872 ++ xen/include/public/io/fbif.h | 176 + xen/include/public/io/fsif.h | 192 + xen/include/public/io/kbdif.h | 576 + xen/include/public/io/libxenvchan.h | 101 + xen/include/public/io/netif.h | 1090 ++ xen/include/public/io/pciif.h | 125 + xen/include/public/io/protocols.h | 42 + xen/include/public/io/pvcalls.h | 160 + xen/include/public/io/ring.h | 488 + xen/include/public/io/sndif.h | 1091 ++ xen/include/public/io/tpmif.h | 143 + xen/include/public/io/usbif.h | 254 + xen/include/public/io/vscsiif.h | 330 + xen/include/public/io/xenbus.h | 80 + xen/include/public/io/xs_wire.h | 153 + xen/include/public/kexec.h | 263 + xen/include/public/memory.h | 735 + xen/include/public/nmi.h | 85 + xen/include/public/physdev.h | 383 + xen/include/public/platform.h | 663 + xen/include/public/pmu.h | 143 + xen/include/public/sched.h | 202 + xen/include/public/sysctl.h | 1142 ++ xen/include/public/tmem.h | 122 + xen/include/public/trace.h | 341 + xen/include/public/vcpu.h | 248 + xen/include/public/version.h | 113 + xen/include/public/vm_event.h | 415 + xen/include/public/xen-compat.h | 46 + xen/include/public/xen.h | 1048 ++ xen/include/public/xencomm.h | 41 + xen/include/public/xenoprof.h | 152 + xen/include/public/xsm/flask_op.h | 216 + xen/include/xen/8250-uart.h | 137 + xen/include/xen/acpi.h | 206 + xen/include/xen/argo.h | 44 + xen/include/xen/atomic.h | 207 + xen/include/xen/bitmap.h | 278 + xen/include/xen/bitops.h | 250 + xen/include/xen/byteorder/big_endian.h | 102 + xen/include/xen/byteorder/generic.h | 68 + xen/include/xen/byteorder/little_endian.h | 102 + xen/include/xen/byteorder/swab.h | 183 + xen/include/xen/cache.h | 18 + xen/include/xen/compat.h | 239 + xen/include/xen/compile.h.in | 13 + xen/include/xen/compiler.h | 147 + xen/include/xen/config.h | 102 + xen/include/xen/console.h | 54 + xen/include/xen/consoled.h | 27 + xen/include/xen/const.h | 26 + xen/include/xen/coverage.h | 14 + xen/include/xen/cper.h | 192 + xen/include/xen/cpu.h | 76 + xen/include/xen/cpuidle.h | 99 + xen/include/xen/cpumask.h | 466 + xen/include/xen/ctype.h | 54 + xen/include/xen/decompress.h | 38 + xen/include/xen/delay.h | 10 + xen/include/xen/device_tree.h | 785 + xen/include/xen/dmi.h | 42 + xen/include/xen/domain.h | 133 + xen/include/xen/domain_page.h | 80 + xen/include/xen/early_printk.h | 21 + xen/include/xen/earlycpio.h | 15 + xen/include/xen/efi.h | 49 + xen/include/xen/elf.h | 37 + xen/include/xen/elfcore.h | 84 + xen/include/xen/elfstructs.h | 614 + xen/include/xen/err.h | 57 + xen/include/xen/errno.h | 18 + xen/include/xen/event.h | 314 + xen/include/xen/event_fifo.h | 47 + xen/include/xen/gdbstub.h | 101 + xen/include/xen/grant_table.h | 108 + xen/include/xen/guest_access.h | 35 + xen/include/xen/gunzip.h | 7 + xen/include/xen/hash.h | 58 + xen/include/xen/hypercall.h | 231 + xen/include/xen/hypfs.h | 123 + xen/include/xen/init.h | 84 + xen/include/xen/inttypes.h | 248 + xen/include/xen/iocap.h | 38 + xen/include/xen/iommu.h | 397 + xen/include/xen/irq.h | 177 + xen/include/xen/irq_cpustat.h | 29 + xen/include/xen/kconfig.h | 31 + xen/include/xen/kernel.h | 107 + xen/include/xen/kexec.h | 102 + xen/include/xen/keyhandler.h | 51 + xen/include/xen/kimage.h | 68 + xen/include/xen/lib.h | 201 + xen/include/xen/lib/x86/Makefile | 8 + xen/include/xen/lib/x86/cpu-policy.h | 50 + xen/include/xen/lib/x86/cpuid.h | 462 + xen/include/xen/lib/x86/msr.h | 104 + xen/include/xen/libelf.h | 498 + xen/include/xen/libfdt/fdt.h | 109 + xen/include/xen/libfdt/libfdt.h | 1512 ++ xen/include/xen/libfdt/libfdt_env.h | 22 + xen/include/xen/list.h | 980 ++ xen/include/xen/list_sort.h | 11 + xen/include/xen/livepatch.h | 188 + xen/include/xen/livepatch_elf.h | 64 + xen/include/xen/livepatch_payload.h | 132 + xen/include/xen/lz4.h | 88 + xen/include/xen/lzo.h | 45 + xen/include/xen/mem_access.h | 115 + xen/include/xen/mm.h | 702 + xen/include/xen/monitor.h | 35 + xen/include/xen/multiboot.h | 128 + xen/include/xen/multiboot2.h | 182 + xen/include/xen/multicall.h | 30 + xen/include/xen/nodemask.h | 293 + xen/include/xen/nospec.h | 82 + xen/include/xen/notifier.h | 70 + xen/include/xen/numa.h | 21 + xen/include/xen/p2m-common.h | 40 + xen/include/xen/page-defs.h | 24 + xen/include/xen/paging.h | 7 + xen/include/xen/param.h | 196 + xen/include/xen/pci.h | 215 + xen/include/xen/pci_ids.h | 11 + xen/include/xen/pci_regs.h | 605 + xen/include/xen/pdx.h | 53 + xen/include/xen/percpu.h | 36 + xen/include/xen/perfc.h | 119 + xen/include/xen/perfc_defn.h | 83 + xen/include/xen/pfn.h | 12 + xen/include/xen/pmstat.h | 17 + xen/include/xen/preempt.h | 37 + xen/include/xen/prefetch.h | 52 + xen/include/xen/pv_console.h | 38 + xen/include/xen/radix-tree.h | 227 + xen/include/xen/random.h | 9 + xen/include/xen/rangeset.h | 111 + xen/include/xen/rbtree.h | 143 + xen/include/xen/rcupdate.h | 183 + xen/include/xen/rwlock.h | 386 + xen/include/xen/sched.h | 1110 ++ xen/include/xen/serial.h | 193 + xen/include/xen/shared.h | 49 + xen/include/xen/shutdown.h | 14 + xen/include/xen/sizes.h | 48 + xen/include/xen/smp.h | 75 + xen/include/xen/softirq.h | 43 + xen/include/xen/sort.h | 10 + xen/include/xen/spinlock.h | 223 + xen/include/xen/stdarg.h | 10 + xen/include/xen/stdbool.h | 9 + xen/include/xen/stop_machine.h | 19 + xen/include/xen/string.h | 131 + xen/include/xen/stringify.h | 12 + xen/include/xen/symbols.h | 36 + xen/include/xen/tasklet.h | 66 + xen/include/xen/time.h | 88 + xen/include/xen/timer.h | 123 + xen/include/xen/trace.h | 114 + xen/include/xen/types.h | 61 + xen/include/xen/typesafe.h | 46 + xen/include/xen/version.h | 29 + xen/include/xen/vga.h | 18 + xen/include/xen/video.h | 24 + xen/include/xen/virtual_region.h | 48 + xen/include/xen/vm_event.h | 109 + xen/include/xen/vmap.h | 41 + 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/^stable-.*/ +matrix: + include: + - compiler: gcc + env: XEN_TARGET_ARCH=x86_64 debug=n + - compiler: gcc + env: XEN_TARGET_ARCH=x86_64 XEN_CONFIG_EXPERT=y RANDCONFIG=y debug=n + - compiler: gcc-5 + env: XEN_TARGET_ARCH=x86_64 debug=n + - compiler: gcc + env: XEN_TARGET_ARCH=x86_64 debug=y + - compiler: gcc-5 + env: XEN_TARGET_ARCH=x86_64 debug=y + - compiler: clang + env: XEN_TARGET_ARCH=x86_64 clang=y debug=n + - compiler: clang + env: XEN_TARGET_ARCH=x86_64 clang=y debug=y + - compiler: gcc + env: XEN_TARGET_ARCH=arm32 CROSS_COMPILE=arm-linux-gnueabihf- debug=n + - compiler: gcc + env: XEN_TARGET_ARCH=arm32 CROSS_COMPILE=arm-linux-gnueabihf- XEN_CONFIG_EXPERT=y RANDCONFIG=y debug=n + - compiler: gcc + env: XEN_TARGET_ARCH=arm32 CROSS_COMPILE=arm-linux-gnueabihf- debug=y + - compiler: gcc + env: XEN_TARGET_ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- debug=n + - compiler: gcc + env: XEN_TARGET_ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- XEN_CONFIG_EXPERT=y RANDCONFIG=y debug=n + - compiler: gcc + env: XEN_TARGET_ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- debug=y +addons: + apt: + sources: + - ubuntu-toolchain-r-test + packages: + - zlib1g-dev + - libncurses5-dev + - libssl-dev + - python-dev + - xorg-dev + - uuid-dev + - libyajl-dev + - libaio-dev + - libglib2.0-dev + - libpixman-1-dev + - pkg-config + - flex + - bison + - gettext + - acpica-tools + - bin86 + - bcc + - libc6-dev-i386 + - libnl-3-dev + - ocaml-nox + - libfindlib-ocaml-dev + - transfig + - pandoc + - gcc-arm-linux-gnueabihf + - gcc-aarch64-linux-gnu + - gcc-5 + - g++-5 + - seabios + - checkpolicy + - ghostscript +# we must set CXX manually instead of using 'language: cpp' due to +# travis-ci/travis-ci#3871 +before_script: + - export CXX=${CC/cc/++} + - export CXX=${CXX/clang/clang++} +script: + - ./scripts/travis-build +after_script: + - cat xen/.config + - cat tools/config.log + - cat docs/config.log +notifications: + irc: + channels: + - secure: "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" diff --git a/CHANGELOG.md b/CHANGELOG.md new file mode 100644 index 0000000000..5c3d3c791d --- /dev/null +++ b/CHANGELOG.md @@ -0,0 +1,36 @@ +# Changelog + +Notable changes to Xen will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) + +## [Unreleased](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog) + +### Added + - This file and MAINTAINERS entry. + - Use x2APIC mode whenever available, regardless of interrupt remapping + support. + - Performance improvements to guest assisted TLB flushes, either when using + the Xen hypercall interface or the viridian one. + - Assorted pvshim performance and scalability improvements plus some bug + fixes. + - Hypervisor framework to ease porting Xen to run on hypervisors. + - Initial support to run on Hyper-V. + - Initial hypervisor file system (hypfs) support. + - libxl support for running qemu-xen device model in a linux stubdomain. + - New 'domid_policy', allowing domain-ids to be randomly chosen. + - Option to preserve domain-id across migrate or save+restore. + - Support in kdd for initial KD protocol handshake for Win 7, 8 and 10 (64 bit). + - Tech preview support for Control-flow Execution Technology, with Xen using + Supervisor Shadow Stacks for its own protection. + +### Changed + - The CPUID data seen by a guest on boot is now moved in the migration + stream. A guest migrating between non-identical hardware will now no + longer observe details such as Family/Model/Stepping, Cache, etc changing. + An administrator still needs to take care to ensure the features visible to + the guest at boot are compatible with anywhere it might migrate. + +## [4.13.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.13.0) - 2019-12-17 + +> Pointer to release from which CHANGELOG tracking starts diff --git a/CODING_STYLE b/CODING_STYLE new file mode 100644 index 0000000000..9f50d9cec4 --- /dev/null +++ b/CODING_STYLE @@ -0,0 +1,237 @@ +Coding Style for the Xen Hypervisor +=================================== + +The Xen coding style described below is the coding style used by the +Xen hypervisor itself (xen/*) as well as various associated low-level +libraries (e.g. tools/libxc/*). + +An exception is made for files which are imported from an external +source. In these cases the prevailing coding style of the upstream +source is generally used (commonly the Linux coding style). + +Other parts of the code base may use other coding styles, sometimes +explicitly (e.g. tools/libxl/CODING_STYLE) but often implicitly (Linux +coding style is fairly common). In general you should copy the style +of the surrounding code. If you are unsure please ask. + +Indentation +----------- + +Indenting uses spaces, not tabs - in contrast to Linux. An indent +level consists of four spaces. Code within blocks is indented by one +extra indent level. The enclosing braces of a block are indented the +same as the code _outside_ the block. e.g. + +void fun(void) +{ + /* One level of indent. */ + + { + /* A second level of indent. */ + } +} + +White space +----------- + +Space characters are used to spread out logical statements, such as in +the condition of an if or while. Spaces are placed between the +keyword and the brackets surrounding the condition, between the +brackets and the condition itself, and around binary operators (except +the structure access operators, '.' and '->'). e.g. + +if ( (wibble & wombat) == 42 ) +{ + ... + +There should be no trailing white space at the end of lines (including +after the opening /* of a comment block). + +Line Length +----------- + +Lines should be less than 80 characters in length. Long lines should +be split at sensible places and the trailing portions indented. + +User visible strings (e.g., printk() messages) should not be split so +they can searched for more easily. + +Bracing +------- + +Braces ('{' and '}') are usually placed on a line of their own, except +for the do/while loop. This is unlike the Linux coding style and +unlike K&R. do/while loops are an exception. e.g.: + +if ( condition ) +{ + /* Do stuff. */ +} +else +{ + /* Other stuff. */ +} + +while ( condition ) +{ + /* Do stuff. */ +} + +do { + /* Do stuff. */ +} while ( condition ); + +etc. + +Braces should be omitted for blocks with a single statement. e.g., + +if ( condition ) + single_statement(); + +Types +----- + +Use basic C types and C standard mandated typedef-s where possible (and +with preference in this order). This in particular means to avoid u8, +u16, etc despite those types continuing to exist in our code base. +Fixed width types should only be used when a fixed width quantity is +meant (which for example may be a value read from or to be written to a +register). + +Especially with pointer types, whenever the pointed to object is not +(supposed to be) modified, qualify the pointed to type with "const". + +Comments +-------- + +Only C style /* ... */ comments are to be used. C++ style // comments +should not be used. Multi-word comments should begin with a capital +letter. Comments containing a single sentence may end with a full +stop; comments containing several sentences must have a full stop +after each sentence. + +Multi-line comment blocks should start and end with comment markers on +separate lines and each line should begin with a leading '*'. + +/* + * Example, multi-line comment block. + * + * Note beginning and end markers on separate lines and leading '*'. + */ + +Emacs local variables +--------------------- + +A comment block containing local variables for emacs is permitted at +the end of files. It should be: + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ + +Handling unexpected conditions +------------------------------ + +GUIDELINES: + +Passing errors up the stack should be used when the caller is already +expecting to handle errors, and the state when the error was +discovered isn’t broken, or isn't too hard to fix. + +domain_crash() should be used when passing errors up the stack is too +difficult, and/or when fixing up state of a guest is impractical, but +where fixing up the state of Xen will allow Xen to continue running. +This is particularly appropriate when the guest is exhibiting behavior +well-behaved guests shouldn't. + +BUG_ON() should be used when you can’t pass errors up the stack, and +either continuing or crashing the guest would likely cause an +information leak or privilege escalation vulnerability. + +ASSERT() IS NOT AN ERROR HANDLING MECHANISM. ASSERT is a way to move +detection of a bug earlier in the programming cycle; it is a +more-noticeable printk. It should only be added after one of the +other three error-handling mechanisms has been evaluated for +reliability and security. + +RATIONALE: + +It's frequently the case that code is written with the assumption that +certain conditions can never happen. There are several possible +actions programmers can take in these situations: + +* Programmers can simply not handle those cases in any way, other than +perhaps to write a comment documenting what the assumption is. + +* Programmers can try to handle the case gracefully -- fixing up +in-progress state and returning an error to the user. + +* Programmers can crash the guest. + +* Programmers can use ASSERT(), which will cause the check to be +executed in DEBUG builds, and cause the hypervisor to crash if it's +violated + +* Programmers can use BUG_ON(), which will cause the check to be +executed in both DEBUG and non-DEBUG builds, and cause the hypervisor +to crash if it's violated. + +In selecting which response to use, we want to achieve several goals: + +- To minimize risk of introducing security vulnerabilities, + particularly as the code evolves over time + +- To efficiently spend programmer time + +- To detect violations of assumptions as early as possible + +- To minimize the impact of bugs on production use cases + +The guidelines above attempt to balance these: + +- When the caller is expecting to handle errors, and there is no +broken state at the time the unexpected condition is discovered, or +when fixing the state is straightforward, then fixing up the state and +returning an error is the most robust thing to do. However, if the +caller isn't expecting to handle errors, or if the state is difficult +to fix, then returning an error may require extensive refactoring, +which is not a good use of programmer time when they're certain that +this condition cannot occur. + +- BUG_ON() will stop all hypervisor action immediately. In situations +where continuing might allow an attacker to escalate privilege, a +BUG_ON() can change a privilege escalation or information leak into a +denial-of-service (an improvement). But in situations where +continuing (say, returning an error) might be safe, then BUG_ON() can +change a benign failure into denial-of-service (a degradation). + +- domain_crash() is similar to BUG_ON(), but with a more limited +effect: it stops that domain immediately. In situations where +continuing might cause guest or hypervisor corruption, but destroying +the guest allows the hypervisor to continue, this can change a more +serious bug into a guest denial-of-service. But in situations where +returning an error might be safe, then domain_crash() can change a +benign failure into a guest denial-of-service. + +- ASSERT() will stop the hypervisor during development, but allow +hypervisor action to continue during production. In situations where +continuing will at worst result in a denial-of-service, and at best +may have little effect other than perhaps quirky behavior, using an +ASSERT() will allow violation of assumptions to be detected as soon as +possible, while not causing undue degradation in production +hypervisors. However, in situations where continuing could cause +privilege escalation or information leaks, using an ASSERT() can +introduce security vulnerabilities. + +Note however that domain_crash() has its own traps: callers far up the +call stack may not realize that the domain is now dying as a result of +an innocuous-looking operation, particularly if somewhere on the +callstack between the initial function call and the failure, no error +is returned. Using domain_crash() requires careful inspection and +documentation of the code to make sure all callers at the stack handle +a newly-dead domain gracefully. diff --git a/CONTRIBUTING b/CONTRIBUTING new file mode 100644 index 0000000000..6ec146baf0 --- /dev/null +++ b/CONTRIBUTING @@ -0,0 +1,231 @@ + +CONTRIBUTING +============ + +INBOUND LICENSE +--------------- + +Contributions are governed by the license that applies to relevant +specific file or by the license specified in the COPYING file, that +governs the license of its containing directory and its subdirectories. + +Most of the Xen Project code is licensed under GPLv2, but a number of +directories are primarily licensed under different licenses. + +Most notably: + - tools/libs : LGPL v2.1 + - tools/libxc : LGPL v2.1 + - tools/libxl : LGPL v2.1 + - tools/xl : LGPL v2.1 + - xen/include/public : MIT license + +The COMMON COPYRIGHT NOTICES section of this document contains +sample copyright notices for the most common licenses used within +this repository. + +When creating new components, new files, or importing code please follow +the conventions outlined below. As a general rule, whenever code using a +license other than GPLv2 is introduced, attention must be drawn to the +difference, such that maintainers can make an informed decision about the +deviation. Any new code must be GPLv2 compatible. + +New components +-------------- + +When creating new components and directories that contain a +significant amount of files that are licensed under licenses other +than GPLv2 or the license specified in the COPYING file, please +create a new COPYING file in that directory containing a copy of the +license text and a rationale for using a different license. This helps +ensure that the license of this new component/directory is maintained +consistently with the original intention. + +New files +--------- + +If specific files that differ from the license in a directory are introduced, +exceptions should be highlighted and discussed in the commit message or cover +letter introducing the file. + +Importing code +-------------- + +When importing code from other upstream projects into this repository, +please create a README.source file in the directory the code is imported +to, listing the original source of the code. An example can be found at +m4/README.source + +Developer's Certificate of Origin +--------------------------------- + +All patches to the Xen Project code base must include the line +"Signed-off-by: your_name " at the end of the change +description. This is required and indicates that you certify the patch +under the "Developer's Certificate of Origin" which states: + + Developer's Certificate of Origin 1.1 + + By making a contribution to this project, I certify that: + + (a) The contribution was created in whole or in part by me and I + have the right to submit it under the open source license + indicated in the file; or + + (b) The contribution is based upon previous work that, to the best + of my knowledge, is covered under an appropriate open source + license and I have the right under that license to submit that + work with modifications, whether created in whole or in part + by me, under the same open source license (unless I am + permitted to submit under a different license), as indicated + in the file; or + + (c) The contribution was provided directly to me by some other + person who certified (a), (b) or (c) and I have not modified + it. + + (d) I understand and agree that this project and the contribution + are public and that a record of the contribution (including all + personal information I submit with it, including my sign-off) is + maintained indefinitely and may be redistributed consistent with + this project or the open source license(s) involved. + +GOVERNANCE AND WORKFLOW +----------------------- + +The following documents provide a general overview of governance and +contribution guidelines for the Xen Project: + - https://xenproject.org/governance.html + - https://xenproject.org/help/contribution-guidelines.html + +For more information on contributing to this repository, see + - CODING_STYLE file in this directory + - https://wiki.xenproject.org/wiki/Submitting_Xen_Project_Patches + - https://wiki.xenproject.org/wiki/Submitting_Xen_Patches_with_Git + - https://wiki.xenproject.org/wiki/Asking_Developer_Questions + - https://wiki.xenproject.org/wiki/Category:Developers + + +COMMON COPYRIGHT NOTICES +======================== + +The following section contains sample copyright notice for the most +common licenses used within the Xen Project that is consistent with the +projects coding standards. + +GPL v2 License +-------------- + +/* + * + * + * + * + * Copyright (C) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms and conditions of the GNU General Public + * License, version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; If not, see . + */ + + +LGPL v2.1 License +----------------- + +/* + * + * + * + * + * Copyright (C) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License, version 2.1, as published by the Free Software Foundation. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; If not, see . + */ + +BSD-Modified License (also known as BSD-3-Clause) +------------------------------------------------- + +/* + * + * + * + * + * Copyright (C) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + + +MIT License +----------- + +/* + * + * + * + * + * Copyright (C) + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + diff --git a/COPYING b/COPYING new file mode 100644 index 0000000000..a4bc2b2dd4 --- /dev/null +++ b/COPYING @@ -0,0 +1,416 @@ + +GNU General Public License +-------------------------- + +Most files in this repository are licensed under the terms of the GNU +General Public License (GPL), a copy of which is attached at the end +of this notice. Note that the only valid version of the GPL as far as +the files in this repository are concerned is _this_ particular +version of the license (i.e., *only* v2, not v2.2 or v3.x or +whatever), unless explicitly otherwise stated. + +Some code fragments in the hypervisor and associated subsystems +include other license stanzas: the most common ones are listed in +the *License Exceptions* section of this file. + +When these code sections are compiled as part of a +GPLv2-licensed program, such as Xen, the result is licensed under +GPLv2. See the FSF's definition of GPL compatibility: + http://www.gnu.org/licenses/gpl-faq.html#WhatDoesCompatMean +And how this applies to a range of open source licenses: + http://www.gnu.org/licenses/license-list.html + +A number of files will also specify GPL exceptions, such as + - Autoconf exception + - Bison exception + - GCC exception + +In addition the xen directory also contains a XEN NOTICE clarifying +what constitutes a derived work, which applies to the xen directory +and its subdirectories (see xen/COPYING). + +Licensing Exceptions +-------------------- + +For the convenience of users and those who are porting OSes to run as +Xen guests, certain files in this repository are not subject to the +GPL when distributed separately or included in software packages +outside this repository. + +Instead we specify more relaxed licenses, depending on need, such as + - BSD style license (BSD Original, BSD Modified, Intel BSD) + - MIT license + - LGPL 2.1 + +Affected files include the Xen interface headers (xen/include/public), +various drivers, support functions and header files within Xen-aware +Linux source trees. 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The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; If not, see . + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/CREDITS b/CREDITS new file mode 100644 index 0000000000..3ddcdbaac6 --- /dev/null +++ b/CREDITS @@ -0,0 +1,16 @@ + This is at least a partial credits-file of people that have + contributed to the Xen project. It is sorted by name and + formatted to allow easy grepping and beautification by + scripts. The fields are: name (N), email (E), web-address + (W), PGP key ID and fingerprint (P), description (D), and + snail-mail address (S). + Thanks, + + Xen team +---------- + +N: Jeremy Fitzhardinge +E: jeremy@goop.org +W: http://www.goop.org/~jeremy +P: 1B40B6D0 +D: Linux pvops diff --git a/Config.mk b/Config.mk new file mode 100644 index 0000000000..ba5eb4ea3c --- /dev/null +++ b/Config.mk @@ -0,0 +1,268 @@ +# -*- mode: Makefile; -*- + +ifeq ($(filter /%,$(XEN_ROOT)),) +$(error XEN_ROOT must be absolute) +endif + +# Convenient variables +comma := , +open := ( +close := ) +squote := ' +#' Balancing squote, to help syntax highlighting +empty := +space := $(empty) $(empty) + +# fallback for older make +realpath = $(wildcard $(foreach file,$(1),$(shell cd -P $(dir $(file)) && echo "$$PWD/$(notdir $(file))"))) +or = $(if $(strip $(1)),$(1),$(if $(strip $(2)),$(2),$(if $(strip $(3)),$(3),$(if $(strip $(4)),$(4))))) + +-include $(XEN_ROOT)/.config + +XEN_COMPILE_ARCH ?= $(shell uname -m | sed -e s/i.86/x86_32/ \ + -e s/i86pc/x86_32/ -e s/amd64/x86_64/ \ + -e s/armv7.*/arm32/ -e s/armv8.*/arm64/ \ + -e s/aarch64/arm64/) + +XEN_TARGET_ARCH ?= $(XEN_COMPILE_ARCH) +XEN_OS ?= $(shell uname -s) + +CONFIG_$(XEN_OS) := y + +SHELL ?= /bin/sh + +# Tools to run on system hosting the build +HOSTCFLAGS = -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer +HOSTCFLAGS += -fno-strict-aliasing + +DISTDIR ?= $(XEN_ROOT)/dist +DESTDIR ?= / + +# Allow phony attribute to be listed as dependency rather than fake target +.PHONY: .phony + +# If we are not cross-compiling, default HOSTC{C/XX} to C{C/XX} +ifeq ($(XEN_TARGET_ARCH), $(XEN_COMPILE_ARCH)) +HOSTCC ?= $(CC) +HOSTCXX ?= $(CXX) +endif + +# Use Clang/LLVM instead of GCC? +clang ?= n +ifeq ($(clang),n) +gcc := y +HOSTCC ?= gcc +HOSTCXX ?= g++ +else +gcc := n +HOSTCC ?= clang +HOSTCXX ?= clang++ +endif + +DEPS_INCLUDE = $(addsuffix .d2, $(basename $(wildcard $(DEPS)))) +DEPS_RM = $(DEPS) $(DEPS_INCLUDE) + +%.d2: %.d + sed "s! $$PWD/! !" $^ >$@.tmp && mv -f $@.tmp $@ + +include $(XEN_ROOT)/config/$(XEN_OS).mk +include $(XEN_ROOT)/config/$(XEN_TARGET_ARCH).mk + +ifneq ($(EXTRA_PREFIX),) +EXTRA_INCLUDES += $(EXTRA_PREFIX)/include +EXTRA_LIB += $(EXTRA_PREFIX)/lib +endif + +PYTHON ?= python +PYTHON_PREFIX_ARG ?= --prefix="$(prefix)" +# The above requires that prefix contains *no spaces*. This variable is here +# to permit the user to set PYTHON_PREFIX_ARG to '' to workaround this bug: +# https://bugs.launchpad.net/ubuntu/+bug/362570 + +# cc-option: Check if compiler supports first option, else fall back to second. +# +# This is complicated by the fact that unrecognised -Wno-* options: +# (a) are ignored unless the compilation emits a warning; and +# (b) even then produce a warning rather than an error +# To handle this we do a test compile, passing the option-under-test, on a code +# fragment that will always produce a warning (integer assigned to pointer). +# We then grep for the option-under-test in the compiler's output, the presence +# of which would indicate an "unrecognized command-line option" warning/error. +# +# Usage: cflags-y += $(call cc-option,$(CC),-march=winchip-c6,-march=i586) +cc-option = $(shell if test -z "`echo 'void*p=1;' | \ + $(1) $(2) -c -o /dev/null -x c - 2>&1 | grep -- $(2:-Wa$(comma)%=%) -`"; \ + then echo "$(2)"; else echo "$(3)"; fi ;) + +# cc-option-add: Add an option to compilation flags, but only if supported. +# Usage: $(call cc-option-add CFLAGS,CC,-march=winchip-c6) +cc-option-add = $(eval $(call cc-option-add-closure,$(1),$(2),$(3))) +define cc-option-add-closure + ifneq ($$(call cc-option,$$($(2)),$(3),n),n) + $(1) += $(3) + endif +endef + +cc-options-add = $(foreach o,$(3),$(call cc-option-add,$(1),$(2),$(o))) + +# cc-ver: Check compiler against the version requirement. Return boolean 'y'/'n'. +# Usage: ifeq ($(call cc-ver,$(CC),ge,0x030400),y) +cc-ver = $(shell if [ $$((`$(1) -dumpversion | awk -F. \ + '{ printf "0x%02x%02x%02x", $$1, $$2, $$3}'`)) -$(2) $$(($(3))) ]; \ + then echo y; else echo n; fi ;) + +# cc-ver-check: Check compiler is at least specified version, else fail. +# Usage: $(call cc-ver-check,CC,0x030400,"Require at least gcc-3.4") +cc-ver-check = $(eval $(call cc-ver-check-closure,$(1),$(2),$(3))) +define cc-ver-check-closure + ifeq ($$(call cc-ver,$$($(1)),ge,$(2)),n) + override $(1) = echo "*** FATAL BUILD ERROR: "$(3) >&2; exit 1; + cc-option := n + endif +endef + +# Require GCC v4.1+ +check-$(gcc) = $(call cc-ver-check,CC,0x040100,"Xen requires at least gcc-4.1") +$(eval $(check-y)) + +ld-ver-build-id = $(shell $(1) --build-id 2>&1 | \ + grep -q build-id && echo n || echo y) + +export XEN_HAS_BUILD_ID ?= n +ifeq ($(call ld-ver-build-id,$(LD)),n) +build_id_linker := +else +CFLAGS += -DBUILD_ID +export XEN_HAS_BUILD_ID=y +build_id_linker := --build-id=sha1 +endif + +ifndef XEN_HAS_CHECKPOLICY + CHECKPOLICY ?= checkpolicy + XEN_HAS_CHECKPOLICY := $(shell $(CHECKPOLICY) -h 2>&1 | grep -q xen && echo y || echo n) + export XEN_HAS_CHECKPOLICY +endif + +define buildmakevars2shellvars + export PREFIX="$(prefix)"; \ + export XEN_SCRIPT_DIR="$(XEN_SCRIPT_DIR)"; \ + export XEN_ROOT="$(XEN_ROOT)" +endef + +# +# Compare $(1) and $(2) and replace $(2) with $(1) if they differ +# +# Typically $(1) is a newly generated file and $(2) is the target file +# being regenerated. This prevents changing the timestamp of $(2) only +# due to being auto regenereated with the same contents. +define move-if-changed + if ! cmp -s $(1) $(2); then mv -f $(1) $(2); else rm -f $(1); fi +endef + +BUILD_MAKE_VARS := sbindir bindir LIBEXEC LIBEXEC_BIN libdir SHAREDIR \ + XENFIRMWAREDIR XEN_CONFIG_DIR XEN_SCRIPT_DIR XEN_LOCK_DIR \ + XEN_RUN_DIR XEN_PAGING_DIR XEN_DUMP_DIR XEN_LOG_DIR \ + XEN_LIB_DIR XEN_RUN_STORED + +buildmakevars2file = $(eval $(call buildmakevars2file-closure,$(1))) +define buildmakevars2file-closure + $(1): .phony + rm -f $(1).tmp; \ + $(foreach var, $(BUILD_MAKE_VARS), \ + echo "$(var)=\"$($(var))\"" >>$(1).tmp;) \ + $(call move-if-changed,$(1).tmp,$(1)) +endef + +buildmakevars2header = $(eval $(call buildmakevars2header-closure,$(1))) +define buildmakevars2header-closure + $(1): .phony + rm -f $(1).tmp; \ + $(foreach var, $(BUILD_MAKE_VARS), \ + echo "#define $(var) \"$($(var))\"" >>$(1).tmp;) \ + $(call move-if-changed,$(1).tmp,$(1)) +endef + +CFLAGS += -fno-strict-aliasing + +CFLAGS += -std=gnu99 + +CFLAGS += -Wall -Wstrict-prototypes + +$(call cc-option-add,HOSTCFLAGS,HOSTCC,-Wdeclaration-after-statement) +$(call cc-option-add,CFLAGS,CC,-Wdeclaration-after-statement) +$(call cc-option-add,CFLAGS,CC,-Wno-unused-but-set-variable) +$(call cc-option-add,CFLAGS,CC,-Wno-unused-local-typedefs) + +LDFLAGS += $(foreach i, $(EXTRA_LIB), -L$(i)) +CFLAGS += $(foreach i, $(EXTRA_INCLUDES), -I$(i)) +LDFLAGS += $(foreach i, $(PREPEND_LIB), -L$(i)) +CFLAGS += $(foreach i, $(PREPEND_INCLUDES), -I$(i)) +ifeq ($(XEN_TOOLS_RPATH),y) +LDFLAGS += -Wl,-rpath,$(libdir) +endif +APPEND_LDFLAGS += $(foreach i, $(APPEND_LIB), -L$(i)) +APPEND_CFLAGS += $(foreach i, $(APPEND_INCLUDES), -I$(i)) + +EMBEDDED_EXTRA_CFLAGS := -nopie -fno-stack-protector -fno-stack-protector-all +EMBEDDED_EXTRA_CFLAGS += -fno-exceptions -fno-asynchronous-unwind-tables + +XEN_EXTFILES_URL ?= http://xenbits.xen.org/xen-extfiles +# All the files at that location were downloaded from elsewhere on +# the internet. The original download URL is preserved as a comment +# near the place in the Xen Makefiles where the file is used. + +# Where to look for inlined subtrees (for example, from a tarball) +QEMU_UPSTREAM_INTREE ?= $(XEN_ROOT)/tools/qemu-xen +QEMU_TRADITIONAL_INTREE ?= $(XEN_ROOT)/tools/qemu-xen-traditional + + +# Handle legacy options +ifneq (,$(SEABIOS_UPSTREAM_TAG)) +SEABIOS_UPSTREAM_REVISION ?= $(SEABIOS_UPSTREAM_TAG) +endif +ifneq (,$(QEMU_REMOTE)) +QEMU_TRADITIONAL_URL ?= $(QEMU_REMOTE) +endif +ifneq (,$(CONFIG_QEMU)) +QEMU_TRADITIONAL_LOC ?= $(CONFIG_QEMU) +endif +ifneq (,$(QEMU_TAG)) +QEMU_TRADITIONAL_REVISION ?= $(QEMU_TAG) +endif + +ifeq ($(GIT_HTTP),y) +OVMF_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/ovmf.git +QEMU_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/qemu-xen.git +QEMU_TRADITIONAL_URL ?= http://xenbits.xen.org/git-http/qemu-xen-traditional.git +SEABIOS_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/seabios.git +MINIOS_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/mini-os.git +else +OVMF_UPSTREAM_URL ?= git://xenbits.xen.org/ovmf.git +QEMU_UPSTREAM_URL ?= git://xenbits.xen.org/qemu-xen.git +QEMU_TRADITIONAL_URL ?= git://xenbits.xen.org/qemu-xen-traditional.git +SEABIOS_UPSTREAM_URL ?= git://xenbits.xen.org/seabios.git +MINIOS_UPSTREAM_URL ?= git://xenbits.xen.org/mini-os.git +endif +OVMF_UPSTREAM_REVISION ?= 20d2e5a125e34fc8501026613a71549b2a1a3e54 +QEMU_UPSTREAM_REVISION ?= qemu-xen-4.14.5 +MINIOS_UPSTREAM_REVISION ?= xen-RELEASE-4.14.5 + +SEABIOS_UPSTREAM_REVISION ?= rel-1.13.0 + +ETHERBOOT_NICS ?= rtl8139 8086100e + + +QEMU_TRADITIONAL_REVISION ?= xen-4.14.5 + +# Specify which qemu-dm to use. This may be `ioemu' to use the old +# Mercurial in-tree version, or a local directory, or a git URL. +# QEMU_UPSTREAM_LOC ?= `pwd`/$(XEN_ROOT)/../qemu-xen.git + +# Defaults for subtree locations +QEMU_TRADITIONAL_LOC ?= $(call or,$(wildcard $(QEMU_TRADITIONAL_INTREE)),\ + $(QEMU_TRADITIONAL_URL)) + +QEMU_UPSTREAM_LOC ?= $(call or,$(wildcard $(QEMU_UPSTREAM_INTREE)),\ + $(QEMU_UPSTREAM_URL)) + +CONFIG_TESTS ?= y diff --git a/INSTALL b/INSTALL new file mode 100644 index 0000000000..0d3eb89f02 --- /dev/null +++ b/INSTALL @@ -0,0 +1,369 @@ + +Compiling Xen from source + +* Overview +* Options recognized by configure +* Variables recognized by make +* Systemd support +* History of options +* Examples + +Overview +======== + +The xen source contains four subsystems: xen, tools, stubdom and docs. +All but xen have to be prepared for build with a configure script in the +toplevel directory. configure recognizes certain arguments and +environment variables which are used to adjust various aspects of the +following compile process. Once configure is done, make(1) has to be +called. Also make(1) recognizes certain arguments. The following sections +will give an overview. + +Xen Hypervisor +============== + +Xen itself is configured via a `kconfig' system borrowed from Linux. +See docs/misc/kconfig.txt. + +Note that unlike with Linux, and contrary to that document, you cannot +look at Kconfig files, or the default or generated config files etc., +to find available configuration options. This is because it is only +supported (and security supported) by the Xen Project, to change a +small subset of the options. Attempts to change other options will be +silently overridden. The only way to find which configuration options +are available is to run `make menuconfig' or the like. + +You can counter-override this behaviour by setting XEN_CONFIG_EXPERT=y +in your environment. However, doing this is not supported and the +resulting configurations do not receive security support. If you set +this variable there is nothing stopping you setting dangerously +experimental combinations of features - not even any warnings. + +Options recognized by configure +=============================== + +The configure script in the toplevel directory will recognize these +options. It will pass them to the configure scripts in the tools, +stubdom, and docs directory. + +Individual subsystems can be selected by one of the following options. +Please note that stubdom requires tools. + --disable-xen + --disable-tools + --enable-stubdom + --disable-docs + +The well known GNU configure options to specify the target directories. +Some components of these paths will be compiled into the binaries. +Note: prefix defaults to /usr/local, sysconfdir defaults to /etc, +localstatedir defaults to /var. + --prefix=DIR + --libdir=DIR + --libexecdir=BASEDIR + --bindir=DIR + --sbindir=DIR + --sysconfdir=DIR + --sharedstatedir=DIR + --localstatedir=DIR + --includedir=DIR + --datarootdir=DIR + --datadir=DIR + --mandir=DIR + --docdir=DIR + +To automatically run the toolstack in dom0 during system startup some +sysv runlevel scripts are installed. This option allows to set the path +for a given system. Possible values are /etc/init.d, /etc/rc.d/init.d or +/etc/rc.d. If not specified configure tries to guess the path. + --with-initddir=DIR + +The runlevel scripts load certain configuration files. They are +typically located in a subdirectory of /etc. Possible values are this +subdirectory are "sysconfig" or "default". If not specified configure +tries to guess the subdir. + --with-sysconfig-leaf-dir=SUBDIR + +If the tools are configured with a non-standard --prefix the runtime +linker will either not find the required libraries or it will load them +from a wrong location. Compiling the tools with rpath will force the +linker to look in the correct location. + --enable-rpath + +During build in a git checkout the buildsystem needs to download +additional tools such as qemu. This is done with either the native git +protocol, or via http if this option is enabled. + --enable-githttp + +Disable xenstat and xentop monitoring tools. + --disable-monitors + +Disable build of certain ocaml libraries and tools. To actually build +them ocaml development packages must be installed. If they are missing +configure will automatically disable this option. + --disable-ocamltools + +Disable XSM policy compilation. + --disable-xsmpolicy + +Attempt to build of an OVMF firmware binary. This requires special +versions of development tools. Use at your own risk. + --enable-ovmf + +Use the given OVMF binary instead of compiling a private copy. + --with-system-ovmf=PATH + +Build a private copy of SeaBIOS. + --disable-seabios + +Use the given SeaBIOS binary instead of compiling a private copy. + --with-system-seabios=PATH + +Build the old qemu used by xm/xend. This is required if existing domUs +should be migrated to this host, or if existing domU snapshots should be +started with this version of the tools. Only if all domUs used the new +upstream qemu during initial start it is safe to disable this option. +The old qemu requires rombios, which can be disable along with +qemu-traditional. + --enable-qemu-traditional + --enable-rombios + +The libxl toolstack uses the upstream qemu per default. A private copy +will be built. If desired this private copy can be configured with +additional options passed to its configure script. + --with-extra-qemuu-configure-args="arg1 arg2" + +Use the given qemu binary instead of compiling a private copy. + --with-system-qemu=PATH + +A dom0 requires a set of backend drivers. The configure script already +supplies a list of known drivers which are automatically loaded in dom0. +This internal list can be changed with this option. + --with-linux-backend-modules="kmod1 kmod2" + +Two variants of a xenstored exist: the original xenstored written in C +(xenstored) or the newer and robust one written in Ocaml (oxenstored). +The oxenstored daemon is the default but can only be used if the +required ocaml packages are installed. In case they are missing the +original xenstored will be used. Valid names are xenstored and +oxenstored. + --with-xenstored=name + +The path where to store core dumps for domUs which are configured with +coredump-destroy or coredump-restart can be specified with this option. + --with-xen-dumpdir=DIR + +Instead of starting the tools in dom0 with sysv runlevel scripts they +can also be started by systemd. If this option is enabled xenstored will +receive the communication socked directly from systemd. So starting it +manually will not work anymore. The paths to systemd internals can also +be changed in case the default paths do not fit anymore. +NOTE: if systemd development packages are installed the systemd support +will be the enabled per default. Using --disable-systemd will override +this detection and the sysv runlevel scripts have to be used. + --enable-systemd + --with-systemd=DIR + --with-systemd-modules-load=DIR + +Build various stubom components, some are only example code. Its usually +enough to specify just --enable-stubdom and leave these options alone. + --enable-ioemu-stubdom + --enable-c-stubdom + --enable-caml-stubdom + --disable-pv-grub + --disable-xenstore-stubdom + --enable-vtpm-stubdom + --enable-vtpmmgr-stubdom + --disable-extfiles + +Per default some parts of the tools code will print additional runtime +debug. This option can be used to disable such code paths. + --disable-debug + +The configure script recognizes also many environment variables. Calling +the individual configure scripts in the subdirectories with the "--help" +option will list these environment variables. + +Variables recognized by make +========================== + +The following variables are recognized by the build system. They have to +be passed as make options, like 'make variable=value'. Having these +variables in the environment, like 'env variable=value make', will not +work for most of them. + +In addition to pass variables as make options it is also supported to +create a ".config" file in the toplevel directory. The file will be +sourced by make(1). + +The well known variable to specify an offset during make install, +useful for packaging. +DESTDIR= + +Per default some parts of the tools code will print additional runtime +debug. This option can be used to disable such code paths. +debug=y +debug_symbols=y + +If --prefix= was used during configure the and ocaml was enabled the +resulting libraries will not be installed in the specified path. Instead +the path provided by ocamlfind(1) will be used. This variable can be +used to override this path. Using the environment variable +OCAMLFIND_DESTDIR= and OCAMLFIND_METADIR= will have the same effect. +OCAMLDESTDIR= + +The xen subsystem will install the hypervisor into fixed locations. +BOOT_DIR defaults to /boot, DEBUG_DIR defaults to /usr/lib/debug and +EFI_DIR to /usr/lib64/efi. +BOOT_DIR= +DEBUG_DIR= +EFI_DIR= + +The make target 'rpmball' will build a xen.rpm. This variable can be +used to append a custom string to the name. In addition a string can be +appended to the rpm Release: tag. +PKG_SUFFIX= +PKG_RELEASE= + +The hypervisor will report a certain version string. This variable can +be used to append a custom string to the version. +XEN_VENDORVERSION= + +During boot xen will report a certain user@host string, which can be +changed with these variables. +XEN_WHOAMI= +XEN_DOMAIN= + +Some components of xen and tools will include an unpredictable timestamp +into the binaries. To allow reproducible builds the following variables +can be used to provide fixed timestamps in the expected format. +XEN_BUILD_DATE= +XEN_BUILD_TIME=hh:mm:ss +SMBIOS_REL_DATE=mm/dd/yyyy +VGABIOS_REL_DATE="dd Mon yyyy" + +This variable can be used to point to a different git binary to be used. +GIT= + +During tools build external repos will be cloned into the source tree. +During stubdom build external packages will be downloaded into the +source tree. These variables can be used to point to a different +locations. +XEN_EXTFILES_URL= +OVMF_UPSTREAM_URL= +QEMU_UPSTREAM_URL= +QEMU_TRADITIONAL_URL= +SEABIOS_UPSTREAM_URL= +MINIOS_UPSTREAM_URL= + +Using additional CFLAGS to build tools which will run in dom0 is +required when building distro packages. These variables can be used to +pass RPM_OPT_FLAGS. +EXTRA_CFLAGS_XEN_TOOLS= +EXTRA_CFLAGS_QEMU_TRADITIONAL= +EXTRA_CFLAGS_QEMU_XEN= + +Additional CFLAGS may be supplied to the build of the hypervisor by +using this variable. +EXTRA_CFLAGS_XEN_CORE= + +This variable can be used to use DIR/include and DIR/lib during build. +This is the same as PREPEND_LIB and PREPEND_INCLUDES. APPEND_LIB and +APPEND_INCLUDES= will be appended to the CFLAGS/LDFLAGS variable. +EXTRA_PREFIX=DIR +PREPEND_LIB=DIR +PREPEND_INCLUDES=DIR +APPEND_LIB=DIR +APPEND_INCLUDES=DIR + +While the tools build will set the path to the python binary with the +configure script, the hypervisor build has to use this variable to use a +different python binary. +PYTHON= + +Building the python tools may fail unless certain options are passed to +setup.py. Config.mk contains additional info how to use this variable. +PYTHON_PREFIX_ARG= + +The hypervisor may be built with XSM/Flask support, which can be changed +by running: +make -C xen menuconfig +and enabling XSM/Flask in the 'Common Features' menu. A security policy +is required to use XSM/Flask; if the SELinux policy compiler is +available, the policy from tools can be included in the hypervisor. +This option is enabled by default if XSM is enabled and the compiler +(checkpolicy) is found. The location of this executable can be set +using the environment variable. +CHECKPOLICY= + +Use clang instead of GCC. +clang=y + + +Systemd support +=============== + +If the systemd development packages are available then the support for +systemd will be enabled per default. It is required to manually enable +the installed systemd service files. Systemd has dependency tracking, +which means all dependencies will be started automatically: + +systemctl enable xen-qemu-dom0-disk-backend.service +systemctl enable xen-init-dom0.service +systemctl enable xenconsoled.service + +Other optional services are: +systemctl enable xendomains.service +systemctl enable xen-watchdog.service + + +QEMU Deprivilege +================ +It is recommended to run QEMU as non-root. +See docs/misc/qemu-deprivilege.txt for an explanation on what you need +to do at installation time to run QEMU as a dedicated user. + + +History of options +================== + +Prior to xen-4.5 configure recognized essentially only the --prefix= and +--libdir= option to specify target directories. Starting with xen-4.5 +all paths can be adjusted once with configure. + + +Examples +======== + +* To build a private copy of tools and xen: +configure --prefix=/odd/path --sysconfdir=/odd/path/etc --enable-rpath +make +sudo make install BOOT_DIR=/ood/path/boot EFI_DIR=/odd/path/efi + + +* Use configure and make to build a distro rpm package (it is required + to unset variables set by the rpm configure macro): +%build +export WGET=$(type -P false) +export GIT=$(type -P false) +export EXTRA_CFLAGS_XEN_TOOLS="$RPM_OPT_FLAGS" +export EXTRA_CFLAGS_QEMU_TRADITIONAL="$RPM_OPT_FLAGS" +export EXTRA_CFLAGS_QEMU_XEN="$RPM_OPT_FLAGS" +%configure \ + --with-initddir=%{_initddir} +unset CFLAGS CXXFLAGS FFLAGS LDFLAGS +make +%install +make install \ + SYSCONFIG_DIR=/var/adm/fillup-templates \ + DESTDIR=$RPM_BUILD_ROOT + + +* To build xen and tools using a cross compiler: +./configure --build=x86_64-unknown-linux-gnu --host=aarch64-linux-gnu +make XEN_TARGET_ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- +make XEN_TARGET_ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- \ + DESTDIR=/some/path install + + + +# vim: tw=72 et diff --git a/MAINTAINERS b/MAINTAINERS new file mode 100644 index 0000000000..04eb361222 --- /dev/null +++ b/MAINTAINERS @@ -0,0 +1,539 @@ + + List of maintainers and how to submit changes + ============================================= + +Please try to follow the guidelines below. This will make things +easier on the maintainers. Not all of these guidelines matter for every +trivial patch so apply some common sense. + +1. Always _test_ your changes, however small, on at least 4 or + 5 people, preferably many more. + +2. Make sure your changes compile correctly in multiple + configurations. For example, both 32- and 64-bit x86. + +3. Make a patch available to the relevant maintainer in the list. Use + 'diff -u' to make the patch easy to merge. Be prepared to get your + changes sent back with seemingly silly requests about formatting + and variable names. These aren't as silly as they seem. One + job the maintainers do is to keep things looking the same. + + PLEASE see https://wiki.xenproject.org/wiki/Submitting_Xen_Patches for + hints on how to submit a patch to xen-unstable in a suitable + form. + + PLEASE try to include any credit lines you want added with the + patch. It avoids people being missed off by mistake and makes + it easier to know who wants adding and who doesn't. + + PLEASE document known bugs. If it doesn't work for everything + or does something very odd once a month document it. + + PLEASE remember that submissions must be made under the terms + of the "Developer's Certificate of Origin" (DCO) and should include + a Signed-off-by: line. + +4. Make sure you have the right to send any changes you make. If you + do changes at work you may find your employer owns the patch + not you. + +5. Happy hacking. + + + Stable Release Maintenance + ========================== + +The policy for inclusion in a Xen stable release is different to that +for inclusion in xen-unstable. + +Please see https://wiki.xenproject.org/wiki/Xen_Maintenance_Releases for more +information. + +Backport requests should be made on the xen-devel@lists.xenproject.org +list. Remember to copy the appropriate stable branch maintainer who +will be listed in this section of the MAINTAINERS file in the +appropriate branch. + +The maintainer for this branch is: + + Jan Beulich + +Tools backport requests should also be copied to: + + TODO - Loooking for new tools stable maintainer + + + Unstable Subsystem Maintainers + ============================== + +Descriptions of section entries: + + M: Maintainer: FullName + Maintainers should be CCed on patches. At least one of them + needs to approve changes to the covered files. + R: Designated reviewer: FullName + Reviewers should be CCed on patches. However, they do not + have a formal governance role, and are listed here + simply because of their own request. + L: Mailing list that is relevant to this area + W: Web-page with status/info + T: SCM tree type and location. Type is one of: git, hg, quilt, stgit. + S: Status, one of the following: + Supported: Someone is actually paid to look after this. + Maintained: Someone actually looks after it. + Odd Fixes: It has a maintainer but they don't have time to do + much other than throw the odd patch in. See below.. + Orphan: No current maintainer [but maybe you could take the + role as you write your new code]. + Obsolete: Old code. Something tagged obsolete generally means + it has been replaced by a better system and you + should be using that. + F: Files and directories with wildcard patterns. + A trailing slash includes all files and subdirectory files. + F: drivers/net/ all files in and below drivers/net + F: drivers/net/* all files in drivers/net, but not below + F: */net/* all files in "any top level directory"/net + One pattern per line. Multiple F: lines acceptable. + X: Files and directories that are NOT maintained, same rules as F: + Files exclusions are tested before file matches. + Can be useful for excluding a specific subdirectory, for instance: + F: net/ + X: net/ipv6/ + matches all files in and below net excluding net/ipv6/ + K: Keyword perl extended regex pattern to match content in a + patch or file. For instance: + K: of_get_profile + matches patches or files that contain "of_get_profile" + K: \b(printk|pr_(info|err))\b + matches patches or files that contain one or more of the words + printk, pr_info or pr_err + One regex pattern per line. Multiple K: lines acceptable. + V: Version identifier that must be under THE REST and follows + the format: + xen-maintainers- + + + +Maintainers List (try to look for most precise areas first) + + ----------------------------------- + +ACPI +M: Jan Beulich +S: Supported +F: xen/arch/x86/acpi/ +F: xen/drivers/acpi/ +F: xen/include/acpi/ +F: tools/libacpi/ + +AMD IOMMU +M: Jan Beulich +M: Andrew Cooper +S: Maintained +F: xen/drivers/passthrough/amd/ + +AMD SVM +M: Jan Beulich +M: Andrew Cooper +S: Supported +F: xen/arch/x86/hvm/svm/ +F: xen/arch/x86/cpu/vpmu_amd.c + +ARGO +M: Christopher Clark +S: Maintained +F: xen/include/public/argo.h +F: xen/include/xen/argo.h +F: xen/common/argo.c + +ARINC653 SCHEDULER +M: Josh Whitehead +M: Stewart Hildebrand +S: Supported +L: xen-devel@dornerworks.com +F: xen/common/sched/arinc653.c +F: tools/libxc/xc_arinc653.c + +ARM (W/ VIRTUALISATION EXTENSIONS) ARCHITECTURE +M: Stefano Stabellini +M: Julien Grall +R: Volodymyr Babchuk +S: Supported +L: xen-devel@lists.xenproject.org +F: docs/misc/arm/ +F: xen/arch/arm/ +F: xen/drivers/char/arm-uart.c +F: xen/drivers/char/cadence-uart.c +F: xen/drivers/char/exynos4210-uart.c +F: xen/drivers/char/meson-uart.c +F: xen/drivers/char/mvebu-uart.c +F: xen/drivers/char/omap-uart.c +F: xen/drivers/char/pl011.c +F: xen/drivers/char/scif-uart.c +F: xen/drivers/passthrough/arm/ +F: xen/include/asm-arm/ +F: xen/include/public/arch-arm/ +F: xen/include/public/arch-arm.h + +Change Log +M: Paul Durrant +R: Community Manager +S: Maintained +F: CHANGELOG.md + +Continuous Integration (CI) +M: Doug Goldstein +W: https://gitlab.com/xen-project/xen +W: https://travis-ci.org/xen-project/xen +S: Supported +F: .gitlab-ci.yml +F: .travis.yml +F: automation/ +F: scripts/travis-build + +CPU POOLS +M: Juergen Gross +M: Dario Faggioli +S: Supported +F: xen/common/sched/cpupool.c + +DEVICE TREE +M: Stefano Stabellini +M: Julien Grall +S: Supported +F: xen/common/libfdt/ +F: xen/common/device_tree.c +F: xen/include/xen/libfdt/ +F: xen/include/xen/device_tree.h +F: xen/drivers/passthrough/device_tree.c + +EFI +M: Jan Beulich +S: Supported +F: xen/arch/x86/efi/ +F: xen/common/efi/ +F: xen/include/efi/ +F: xen/include/asm-x86/efi*.h +F: xen/include/asm-x86/x86_*/efi*.h + +GDBSX DEBUGGER +M: Elena Ufimtseva +S: Supported +F: xen/arch/x86/debug.c +F: tools/debugger/gdbsx/ + +GOLANG BINDINGS +M: George Dunlap +S: Maintained +F: tools/golang + +INTEL(R) TRUSTED EXECUTION TECHNOLOGY (TXT) +R: Lukasz Hawrylko +S: Odd Fixes +F: xen/arch/x86/tboot.c +F: xen/include/asm-x86/tboot.h + +INTEL(R) VT FOR DIRECTED I/O (VT-D) +M: Kevin Tian +S: Supported +F: xen/drivers/passthrough/vtd/ + +INTEL(R) VT FOR X86 (VT-X) +M: Jun Nakajima +M: Kevin Tian +S: Supported +F: xen/arch/x86/hvm/vmx/ +F: xen/arch/x86/mm/p2m-ept.c +F: xen/include/asm-x86/hvm/vmx/ +F: xen/arch/x86/cpu/vpmu_intel.c + +IOMMU VENDOR INDEPENDENT CODE +M: Jan Beulich +M: Paul Durrant +S: Supported +F: xen/drivers/passthrough/ +X: xen/drivers/passthrough/amd/ +X: xen/drivers/passthrough/arm/ +X: xen/drivers/passthrough/vtd/ +X: xen/drivers/passthrough/device_tree.c +F: xen/include/xen/iommu.h + +KCONFIG +M: Doug Goldstein +S: Supported +F: docs/misc/kconfig{,-language}.txt +F: xen/tools/kconfig/ + +KDD DEBUGGER +M: Tim Deegan +S: Odd Fixes +F: tools/debugger/kdd/ + +KEXEC +M: Andrew Cooper +S: Supported +F: xen/common/{kexec,kimage}.c +F: xen/include/{kexec,kimage}.h +F: xen/arch/x86/machine_kexec.c +F: xen/arch/x86/x86_64/kexec_reloc.S + +LIBXENLIGHT +M: Ian Jackson +M: Wei Liu +M: Anthony PERARD +S: Supported +F: tools/libxl/ +F: tools/xl/ + +LIVEPATCH +M: Konrad Rzeszutek Wilk +M: Ross Lagerwall +S: Supported +F: docs/misc/livepatch.pandoc +F: tools/misc/xen-livepatch.c +F: xen/arch/*/livepatch* +F: xen/arch/*/*/livepatch* +F: xen/common/livepatch* +F: xen/include/asm-*/livepatch.h +F: xen/include/xen/livepatch* +F: xen/test/livepatch/* + +MINI-OS +M: Samuel Thibault +R: Wei Liu +S: Supported +L: minios-devel@lists.xenproject.org +T: git https://xenbits.xenproject.org/git-http/mini-os.git +F: config/MiniOS.mk + +OCAML TOOLS +M: Christian Lindig +M: David Scott +S: Supported +F: tools/ocaml/ + +OVMF UPSTREAM +M: Anthony PERARD +M: Wei Liu +S: Supported +T: git https://xenbits.xenproject.org/git-http/ovmf.git + +POWER MANAGEMENT +M: Jan Beulich +S: Supported +F: xen/arch/x86/acpi/ +X: xen/arch/x86/acpi/boot.c +X: xen/arch/x86/acpi/lib.c +F: xen/drivers/cpufreq/ +F: xen/include/acpi/cpufreq/ + +PUBLIC I/O INTERFACES AND PV DRIVERS DESIGNS +M: Juergen Gross +S: Supported +F: xen/include/public/io/ + +PYTHON BINDINGS +M: Marek Marczykowski-Górecki +S: Supported +F: tools/python + +QEMU-DM +M: Ian Jackson +S: Supported +T: git https://xenbits.xenproject.org/git-http/qemu-xen-traditional.git + +QEMU UPSTREAM +M: Stefano Stabellini +M: Anthony Perard +S: Supported +T: git https://xenbits.xenproject.org/git-http/qemu-xen.git + +REMUS +M: Shriram Rajagopalan +M: Yang Hongyang +S: Maintained +F: docs/README.remus +F: tools/libxl/libxl_remus_* +F: tools/libxl/libxl_netbuffer.c +F: tools/libxl/libxl_nonetbuffer.c +F: tools/hotplug/Linux/remus-netbuf-setup +F: tools/hotplug/Linux/block-drbd-probe + +RTDS SCHEDULER +M: Dario Faggioli +M: Meng Xu +S: Supported +F: xen/common/sched/rt.c + +SCHEDULING +M: George Dunlap +M: Dario Faggioli +S: Supported +F: xen/common/sched/ + +SEABIOS UPSTREAM +M: Wei Liu +S: Supported +T: git https://xenbits.xenproject.org/git-http/seabios.git + +STUB DOMAINS +M: Samuel Thibault +S: Supported +F: config/Stubdom.mk.in +F: m4/stubdom.m4 +F: stubdom/ + +TEE MEDIATORS +M: Volodymyr Babchuk +S: Supported +F: xen/arch/arm/tee/ +F: xen/include/asm-arm/tee + +TOOLSTACK +M: Ian Jackson +M: Wei Liu +S: Supported +F: autogen.sh +F: config/*.in +F: install.sh +F: m4/ +F: configure +F: docs/Makefile +F: docs/man/ +F: stubdom/Makefile +F: *.ac +F: */configure +F: */*.ac +F: tools/ + +VM EVENT, MEM ACCESS and MONITOR +M: Tamas K Lengyel +R: Alexandru Isaila +R: Petre Pircalabu +S: Supported +F: tools/tests/xen-access +F: xen/arch/*/monitor.c +F: xen/arch/*/vm_event.c +F: xen/arch/arm/mem_access.c +F: xen/arch/x86/mm/mem_access.c +F: xen/arch/x86/hvm/monitor.c +F: xen/arch/x86/hvm/vm_event.c +F: xen/common/mem_access.c +F: xen/common/monitor.c +F: xen/common/vm_event.c +F: xen/include/*/mem_access.h +F: xen/include/*/monitor.h +F: xen/include/*/vm_event.h +F: xen/include/asm-x86/hvm/monitor.h +F: xen/include/asm-x86/hvm/vm_event.h + +VPCI +M: Roger Pau Monné +S: Supported +F: xen/drivers/vpci/ +F: xen/include/xen/vpci.h + +VTPM +M: Daniel De Graaf +M: Quan Xu +S: Supported +F: extras/mini-os/tpm* +F: extras/mini-os/include/tpm* +F: stubdom/vtpm/ +F: stubdom/vtpmmgr/ +F: docs/misc/vtpm-platforms.txt + +X86 ARCHITECTURE +M: Jan Beulich +M: Andrew Cooper +R: Wei Liu +R: Roger Pau Monné +S: Supported +L: xen-devel@lists.xenproject.org +F: xen/arch/x86/ +F: xen/include/asm-x86/ +F: xen/include/public/arch-x86/ +F: xen/include/xen/lib/x86 +F: xen/lib/x86 +F: tools/firmware/hvmloader/ +F: tools/firmware/rombios/ +F: tools/firmware/vgabios/ +F: tools/fuzz/cpu-policy/ +F: tools/fuzz/x86_instruction_emulator/ +F: tools/misc/xen-cpuid.c +F: tools/tests/cpu-policy/ +F: tools/tests/x86_emulator/ + +X86 I/O EMULATION +M: Paul Durrant +S: Supported +F: xen/arch/x86/hvm/emulate.c +F: xen/arch/x86/hvm/intercept.c +F: xen/arch/x86/hvm/io.c +F: xen/arch/x86/hvm/ioreq.c +F: xen/include/asm-x86/hvm/emulate.h +F: xen/include/asm-x86/hvm/io.h +F: xen/include/asm-x86/hvm/ioreq.h +F: xen/include/public/hvm/ioreq.h + +X86 MEMORY MANAGEMENT +M: Jan Beulich +M: Andrew Cooper +R: George Dunlap +S: Supported +F: xen/arch/x86/mm/ + +X86 MEMORY PAGING +S: Orphaned +F: xen/arch/x86/mm/mem_paging.c + +X86 MEMORY SHARING +M: Tamas K Lengyel +S: Odd Fixes +F: xen/arch/x86/mm/mem_sharing.c +F: tools/tests/mem-sharing/ + +X86 SHADOW PAGETABLES +M: Tim Deegan +S: Maintained +F: xen/arch/x86/mm/shadow/ + +X86 VIRIDIAN ENLIGHTENMENTS +M: Paul Durrant +M: Wei Liu +S: Supported +F: xen/arch/x86/guest/hyperv/ +F: xen/arch/x86/hvm/viridian/ +F: xen/include/asm-x86/guest/hyperv.h +F: xen/include/asm-x86/guest/hyperv-hcall.h +F: xen/include/asm-x86/guest/hyperv-tlfs.h +F: xen/include/asm-x86/hvm/viridian.h + +XENTRACE +M: George Dunlap +S: Supported +F: tools/xentrace/ +F: xen/common/trace.c +F: xen/include/xen/trace.h + +XSM/FLASK +M: Daniel De Graaf +S: Supported +F: tools/flask/ +F: xen/include/xsm/ +F: xen/xsm/ +F: docs/misc/xsm-flask.txt + +THE REST +M: Andrew Cooper +M: George Dunlap +M: Ian Jackson +M: Jan Beulich +M: Julien Grall +M: Stefano Stabellini +M: Wei Liu +L: xen-devel@lists.xenproject.org +S: Supported +F: * +F: */ +V: xen-maintainers-1 diff --git a/Makefile b/Makefile new file mode 100644 index 0000000000..9ad2602f63 --- /dev/null +++ b/Makefile @@ -0,0 +1,330 @@ +# +# Grand Unified Makefile for Xen. +# + +# Default target must appear before any include lines +.PHONY: all +all: dist + +-include config/Toplevel.mk +SUBSYSTEMS?=xen tools stubdom docs +TARGS_DIST=$(patsubst %, dist-%, $(SUBSYSTEMS)) +TARGS_INSTALL=$(patsubst %, install-%, $(SUBSYSTEMS)) +TARGS_UNINSTALL=$(patsubst %, uninstall-%, $(SUBSYSTEMS)) +TARGS_BUILD=$(patsubst %, build-%, $(SUBSYSTEMS)) +TARGS_CLEAN=$(patsubst %, clean-%, $(SUBSYSTEMS)) +TARGS_DISTCLEAN=$(patsubst %, distclean-%, $(SUBSYSTEMS)) + +export XEN_ROOT=$(CURDIR) +include Config.mk + +.PHONY: mini-os-dir +mini-os-dir: + if [ ! -d $(XEN_ROOT)/extras/mini-os ]; then \ + GIT=$(GIT) $(XEN_ROOT)/scripts/git-checkout.sh \ + $(MINIOS_UPSTREAM_URL) \ + $(MINIOS_UPSTREAM_REVISION) \ + $(XEN_ROOT)/extras/mini-os ; \ + fi + +.PHONY: mini-os-dir-force-update +mini-os-dir-force-update: mini-os-dir + set -ex; \ + if [ "$(MINIOS_UPSTREAM_REVISION)" ]; then \ + cd extras/mini-os-remote; \ + $(GIT) fetch origin; \ + $(GIT) reset --hard $(MINIOS_UPSTREAM_REVISION); \ + fi + +export XEN_TARGET_ARCH +export DESTDIR + +.PHONY: %-tools-public-headers +%-tools-public-headers: + $(MAKE) -C tools/include $* + +# build and install everything into the standard system directories +.PHONY: install +install: $(TARGS_INSTALL) + +.PHONY: build +build: $(TARGS_BUILD) + +.PHONY: build-xen +build-xen: + $(MAKE) -C xen build + +.PHONY: %_defconfig +%_defconfig: + $(MAKE) -C xen $@ + +.PHONY: build-tools +build-tools: build-tools-public-headers + $(MAKE) -C tools build + +.PHONY: build-stubdom +build-stubdom: mini-os-dir build-tools-public-headers + $(MAKE) -C stubdom build +ifeq (x86_64,$(XEN_TARGET_ARCH)) + XEN_TARGET_ARCH=x86_32 $(MAKE) -C stubdom pv-grub +endif + +.PHONY: build-docs +build-docs: + $(MAKE) -C docs build + +# The test target is for unit tests that can run without an installation. Of +# course, many tests require a machine running Xen itself, and these are +# handled elsewhere. +.PHONY: test +test: + $(MAKE) -C tools/python test + +run-tests-%: build-tools-public-headers tools/tests/%/ + $(MAKE) -C tools/tests/$* run + +# For most targets here, +# make COMPONENT-TARGET +# is implemented, more or less, by +# make -C COMPONENT TARGET +# +# Each rule that does this needs to have dependencies on any +# other COMPONENTs that have to be processed first. See +# The install-tools target here for an example. +# +# dist* targets are special: these do not occur in lower-level +# Makefiles. Instead, these are all implemented only here. +# They run the appropriate install targets with DESTDIR set. +# +# Also, we have a number of targets COMPONENT which run +# dist-COMPONENT, for convenience. +# +# The Makefiles invoked with -C from the toplevel should +# generally have the following targets: +# all build install clean distclean + + +.PHONY: dist +dist: DESTDIR=$(DISTDIR)/install +dist: $(TARGS_DIST) dist-misc + +dist-misc: + $(INSTALL_DIR) $(DISTDIR)/ + $(INSTALL_DATA) ./COPYING $(DISTDIR) + $(INSTALL_DATA) ./README $(DISTDIR) + $(INSTALL_PROG) ./install.sh $(DISTDIR) + + +dist-%: DESTDIR=$(DISTDIR)/install +dist-%: install-% + @: # do nothing + +.PHONY: xen tools stubdom docs +xen: dist-xen +tools: dist-tools +stubdom: dist-stubdom +docs: dist-docs + +.PHONY: install-xen +install-xen: + $(MAKE) -C xen install + +.PHONY: install-tools +install-tools: install-tools-public-headers + $(MAKE) -C tools install + +.PHONY: install-stubdom +install-stubdom: mini-os-dir install-tools + $(MAKE) -C stubdom install +ifeq (x86_64,$(XEN_TARGET_ARCH)) + XEN_TARGET_ARCH=x86_32 $(MAKE) -C stubdom install-grub +endif + +.PHONY: tools/firmware/seabios-dir-force-update +tools/firmware/seabios-dir-force-update: + $(MAKE) -C tools/firmware seabios-dir-force-update + +.PHONY: tools/firmware/ovmf-dir-force-update +tools/firmware/ovmf-dir-force-update: + $(MAKE) -C tools/firmware ovmf-dir-force-update + +.PHONY: install-docs +install-docs: + $(MAKE) -C docs install + +# We only have build-tests install-tests, not uninstall-tests etc. +.PHONY: build-tests +build-tests: build-xen + $(MAKE) -C xen tests + +.PHONY: install-tests +install-tests: install-xen + $(MAKE) -C xen $@ + +# build xen and the tools and place them in the install +# directory. 'make install' should then copy them to the normal system +# directories +.PHONY: world +world: + $(MAKE) clean + $(MAKE) dist + +# Package a build in a debball file, that is inside a .deb format +# container to allow for easy and clean removal. This is not intended +# to be a full featured policy compliant .deb package. +.PHONY: debball +debball: dist + fakeroot sh ./tools/misc/mkdeb $(XEN_ROOT) $$($(MAKE) -C xen xenversion --no-print-directory) + +# Package a build in an rpmball file, that is inside a .rpm format +# container to allow for easy and clean removal. This is not intended +# to be a full featured policy compliant .rpm package. +.PHONY: rpmball +rpmball: dist + bash ./tools/misc/mkrpm $(XEN_ROOT) $$($(MAKE) -C xen xenversion --no-print-directory) + +.PHONY: subtree-force-update +subtree-force-update: mini-os-dir-force-update + $(MAKE) -C tools subtree-force-update + +.PHONY: subtree-force-update-all +subtree-force-update-all: mini-os-dir-force-update + $(MAKE) -C tools subtree-force-update-all + +# Make a source tarball, including qemu sub-trees. +# +# src-tarball will use "git describe" for the version number. This +# will have the most recent tag, number of commits since that tag, and +# git commit id of the head. This is suitable for a "snapshot" +# tarball of an unreleased tree. +# +# src-tarball-release will use "make xenversion" as the version +# number. This is suitable for release tarballs. +.PHONY: src-tarball-release +src-tarball-release: subtree-force-update-all + bash ./tools/misc/mktarball $(XEN_ROOT) $$($(MAKE) -C xen xenversion --no-print-directory) + +.PHONY: src-tarball +src-tarball: subtree-force-update-all + bash ./tools/misc/mktarball $(XEN_ROOT) $$(git describe) + +.PHONY: clean +clean: $(TARGS_CLEAN) + +.PHONY: clean-xen +clean-xen: + $(MAKE) -C xen clean + +.PHONY: clean-tools +clean-tools: clean-tools-public-headers + $(MAKE) -C tools clean + +.PHONY: clean-stubdom +clean-stubdom: clean-tools-public-headers + $(MAKE) -C stubdom crossclean +ifeq (x86_64,$(XEN_TARGET_ARCH)) + XEN_TARGET_ARCH=x86_32 $(MAKE) -C stubdom crossclean +endif + +.PHONY: clean-docs +clean-docs: + $(MAKE) -C docs clean + +# clean, but blow away tarballs +.PHONY: distclean +distclean: $(TARGS_DISTCLEAN) + $(MAKE) -C tools/include distclean + rm -f config/Toplevel.mk + rm -rf dist + rm -rf config.log config.status config.cache autom4te.cache + +.PHONY: distclean-xen +distclean-xen: + $(MAKE) -C xen distclean + +.PHONY: distclean-tools +distclean-tools: + $(MAKE) -C tools distclean + +.PHONY: distclean-stubdom +distclean-stubdom: + $(MAKE) -C stubdom distclean +ifeq (x86_64,$(XEN_TARGET_ARCH)) + XEN_TARGET_ARCH=x86_32 $(MAKE) -C stubdom distclean +endif + rm -rf extras/mini-os extras/mini-os-remote + +.PHONY: distclean-docs +distclean-docs: + $(MAKE) -C docs distclean + +# Linux name for GNU distclean +.PHONY: mrproper +mrproper: distclean + +.PHONY: help +help: + @echo 'Installation targets:' + @echo ' install - build and install everything' + @echo ' install-xen - build and install the Xen hypervisor' + @echo ' install-tools - build and install the control tools' + @echo ' install-stubdom - build and install the stubdomain images' + @echo ' install-docs - build and install user documentation' + @echo '' + @echo 'Local dist targets:' + @echo ' dist - build and install everything into local dist directory' + @echo ' world - clean everything then make dist' + @echo ' dist-xen - build Xen hypervisor and install into local dist' + @echo ' dist-tools - build the tools and install into local dist' + @echo ' dist-stubdom - build the stubdomain images and install into local dist' + @echo ' dist-docs - build user documentation and install into local dist' + @echo '' + @echo 'Building targets:' + @echo ' build - build everything' + @echo ' build-xen - build Xen hypervisor' + @echo ' build-tools - build the tools' + @echo ' build-stubdom - build the stubdomain images' + @echo ' build-docs - build user documentation' + @echo '' + @echo 'Cleaning targets:' + @echo ' clean - clean the Xen, tools and docs' + @echo ' distclean - clean plus delete kernel build trees and' + @echo ' local downloaded files' + @echo ' subtree-force-update - Call *-force-update on all git subtrees (qemu, seabios, ovmf)' + @echo '' + @echo 'Miscellaneous targets:' + @echo ' uninstall - attempt to remove installed Xen tools' + @echo ' (use with extreme care!)' + @echo + @echo 'Package targets:' + @echo ' src-tarball-release - make a source tarball with xen and qemu tagged with a release' + @echo ' src-tarball - make a source tarball with xen and qemu tagged with git describe' + @echo + @echo 'Environment:' + @echo ' [ this documentation is sadly not complete ]' + +# Use this target with extreme care! + +.PHONY: uninstall-xen +uninstall-xen: + $(MAKE) -C xen uninstall + +.PHONY: uninstall-tools +uninstall-tools: + $(MAKE) -C tools uninstall + +.PHONY: uninstall-stubdom +uninstall-stubdom: + $(MAKE) -C stubdom uninstall + +.PHONY: uninstall-docs +uninstall-docs: + $(MAKE) -C docs uninstall + +.PHONY: uninstall +uninstall: D=$(DESTDIR) +uninstall: uninstall-tools-public-headers $(TARGS_UNINSTALL) + +.PHONY: xenversion +xenversion: + @$(MAKE) --no-print-directory -C xen xenversion diff --git a/README b/README new file mode 100644 index 0000000000..c7da4b06e2 --- /dev/null +++ b/README @@ -0,0 +1,209 @@ +################################### +__ __ _ _ _ _ _ +\ \/ /___ _ __ | || | / | || | + \ // _ \ '_ \ | || |_ | | || |_ + / \ __/ | | | |__ _|| |__ _| +/_/\_\___|_| |_| |_|(_)_| |_| + +################################### + +https://www.xen.org/ + +What is Xen? +============ + +Xen is a Virtual Machine Monitor (VMM) originally developed by the +Systems Research Group of the University of Cambridge Computer +Laboratory, as part of the UK-EPSRC funded XenoServers project. Xen +is freely-distributable Open Source software, released under the GNU +GPL. Since its initial public release, Xen has grown a large +development community, spearheaded by xen.org (https://www.xen.org). + +This file contains some quick-start instructions to install Xen on +your system. For more information see https://www.xen.org/ and +https://wiki.xen.org/ + +Quick-Start Guide +================= + +First, this is just a quick-start guide. For more comprehensive +information see the INSTALL file and the Xen wiki at +https://wiki.xenproject.org and in particular +https://wiki.xenproject.org/wiki/Getting_Started. + +Second, there are a number of prerequisites for building a Xen source +release. Make sure you have all the following installed, either by +visiting the project webpage or installing a pre-built package +provided by your OS distributor: + * GNU Make v3.80 or later + * C compiler and linker: + - For x86: + - GCC 4.1.2_20070115 or later + - GNU Binutils 2.16.91.0.5 or later + or + - Clang/LLVM 3.5 or later + - For ARM: + - GCC 4.8 or later + - GNU Binutils 2.24 or later + * Development install of zlib (e.g., zlib-dev) + * Development install of Python 2.6 or later (e.g., python-dev) + * Development install of curses (e.g., libncurses-dev) + * Development install of openssl (e.g., openssl-dev) + * Development install of x11 (e.g. xorg-x11-dev) + * Development install of uuid (e.g. uuid-dev) + * Development install of yajl (e.g. libyajl-dev) + * Development install of libaio (e.g. libaio-dev) version 0.3.107 or + greater. + * Development install of GLib v2.0 (e.g. libglib2.0-dev) + * Development install of Pixman (e.g. libpixman-1-dev) + * pkg-config + * bridge-utils package (/sbin/brctl) + * iproute package (/sbin/ip) + * GNU bison and GNU flex + * GNU gettext + * ACPI ASL compiler (iasl) + * Libc multiarch package (e.g. libc6-dev-i386 / glibc-devel.i686). + Required when building on a 64-bit platform to build + 32-bit components which are enabled on a default build. + +In addition to the above there are a number of optional build +prerequisites. Omitting these will cause the related features to be +disabled at compile time: + * Development install of Ocaml (e.g. ocaml-nox and + ocaml-findlib). Required to build ocaml components which + includes the alternative ocaml xenstored. + * cmake (if building vtpm stub domains) + * pandoc, transfig, pod2{man,html,text} for rendering various pieces of + documentation into alternative formats + * figlet (for generating the traditional Xen start of day banner) + * systemd daemon development files + * Development install of libnl3 (e.g., libnl-3-200, + libnl-3-dev, etc). Required if network buffering is desired + when using Remus with libxl. See docs/README.remus for detailed + information. + * 16-bit x86 assembler, loader and compiler for qemu-traditional / rombios + (dev86 rpm or bin86 & bcc debs) + * Development install of liblzma for rombios + +Second, you need to acquire a suitable kernel for use in domain 0. If +possible you should use a kernel provided by your OS distributor. If +no suitable kernel is available from your OS distributor then refer to +https://wiki.xen.org/wiki/XenDom0Kernels for suggestions for +suitable kernels to use. +If you are looking to compile a Dom0 kernel from source, please refer to +https://wiki.xen.org/wiki/XenParavirtOps. + +[NB. Unless noted otherwise, all the following steps should be +performed with root privileges.] + +1. Download and untar the source tarball file. This will be a + file named xen-unstable-src.tgz, or xen-$version-src.tgz. + You can also pull the current version from the git or mercurial + repositories at https://xenbits.xen.org/ + + # tar xzf xen-unstable-src.tgz + + Assuming you are using the unstable tree, this will + untar into xen-unstable. The rest of the instructions + use the unstable tree as an example, substitute the + version for unstable. + +2. cd to xen-unstable (or whatever you sensibly rename it to). + +3. For the very first build, or if you want to destroy build trees, + perform the following steps: + + # ./configure + # make world + # make install + + See the documentation in the INSTALL file for more info. + + This will create and install onto the local machine. It will build + the xen binary (xen.gz), the tools and the documentation. + + You can override the destination for make install by setting DESTDIR + to some value. + +4. To rebuild an existing tree without modifying the config: + # make dist + + This will build and install xen, tools, and docs into the local dist/ + directory. + + You can override the destination for make install by setting DISTDIR + to some value. + + make install and make dist differ in that make install does the + right things for your local machine (installing the appropriate + version of udev scripts, for example), but make dist includes all + versions of those scripts, so that you can copy the dist directory + to another machine and install from that distribution. + +xenstore: xenstored and oxenstored +==================================== + +Xen uses a configuration database called xenstore [0] to maintain configuration +and status information shared between domains. A daemon is implemented as part +of xenstore to act as an interface for access to the database for dom0 and +guests. Two xenstored daemons are supported, one written in C which we refer +to as the xenstored (sometimes referred to as cxenstored), and another written +in Ocaml called oxenstored. Details for xenstore and the different +implementations can be found on the wiki's xenstore reference guide [1] and +the xenstored [2] page. You can choose which xenstore you want to enable as +default on a system through configure: + + ./configure --with-xenstored=xenstored + ./configure --with-xenstored=oxenstored + +By default oxenstored will be used if the ocaml development tools are found. +If you enable oxenstored the xenstored will still be built and installed, +the xenstored used can be changed through the configuration file: + +/etc/sysconfig/xencommons +or +/etc/default/xencommons + +You can change the preferred xenstored you want to use in the configuration +but since we cannot stop the daemon a reboot will be required to make the +change take effect. + +[0] https://wiki.xen.org/wiki/XenStore +[1] https://wiki.xen.org/wiki/XenStoreReference +[2] https://wiki.xen.org/wiki/Xenstored + +Python Runtime Libraries +======================== + +Various tools, such as pygrub, have the following runtime dependencies: + + * Python 2.6 or later. + URL: http://www.python.org/ + Debian: python + +Note that the build system expects `python` to be available. If your system +only has `python2` or `python3` but not `python` (as in Linux From Scratch), +you will need to create a symlink for it, or specify PYTHON= when invoking +make, like (note the position of PYTHON= matters): + + # make PYTHON=/usr/bin/python3 + +Intel(R) Trusted Execution Technology Support +============================================= + +Intel's technology for safer computing, Intel(R) Trusted Execution Technology +(Intel(R) TXT), defines platform-level enhancements that provide the building +blocks for creating trusted platforms. For more information, see +http://www.intel.com/technology/security/. + +Intel(R) TXT support is provided by the Trusted Boot (tboot) module in +conjunction with minimal logic in the Xen hypervisor. + +Tboot is an open source, pre- kernel/VMM module that uses Intel(R) TXT to +perform a measured and verified launch of an OS kernel/VMM. + +The Trusted Boot module is available from +http://sourceforge.net/projects/tboot. This project hosts the code in a +mercurial repo at http://tboot.sourceforge.net/hg/tboot.hg and contains +tarballs of the source. Instructions in the tboot README describe how +to modify grub.conf to use tboot to launch Xen. diff --git a/SUPPORT.md b/SUPPORT.md new file mode 100644 index 0000000000..c45390a245 --- /dev/null +++ b/SUPPORT.md @@ -0,0 +1,990 @@ +% Support statement for this release + +This document describes the support status +and in particular the security support status of the Xen branch +within which you find it. + +See the bottom of the file +for the definitions of the support status levels etc. + +# Release Support + + Xen-Version: 4.14 + Initial-Release: 2020-07-24 + Supported-Until: 2022-01-24 + Security-Support-Until: 2023-07-24 + +Release Notes +: RN + +# Feature Support + +## Kconfig + +EXPERT and DEBUG Kconfig options are not security supported. Other +Kconfig options are supported, if the related features are marked as +supported in this document. + +## Host Architecture + +### x86-64 + + Status: Supported + +### ARM v7 + Virtualization Extensions + + Status: Supported + +### ARM v8 + + Status: Supported + +## Host hardware support + +### Physical CPU Hotplug + + Status, x86: Supported + +### Physical Memory Hotplug + + Status, x86: Supported + +### Host ACPI (via Domain 0) + + Status, x86 PV: Supported + Status, ARM: Experimental + +### x86/Intel Platform QoS Technologies + + Status: Tech Preview + +### IOMMU + + Status, AMD IOMMU: Supported + Status, Intel VT-d: Supported + Status, ARM SMMUv1: Supported, not security supported + Status, ARM SMMUv2: Supported, not security supported + Status, Renesas IPMMU-VMSA: Tech Preview + +### ARM/GICv3 ITS + +Extension to the GICv3 interrupt controller to support MSI. + + Status: Experimental + +## Guest Type + +### x86/PV + +Traditional Xen PV guest + +No hardware requirements + + Status, x86_64: Supported + Status, x86_32, shim: Supported + Status, x86_32, without shim: Supported, not security supported + +### x86/HVM + +Fully virtualised guest using hardware virtualisation extensions + +Requires hardware virtualisation support (Intel VMX / AMD SVM) + + Status, domU: Supported + +### x86/PVH + +PVH is a next-generation paravirtualized mode +designed to take advantage of hardware virtualization support when possible. +During development this was sometimes called HVMLite or PVHv2. + +Requires hardware virtualisation support (Intel VMX / AMD SVM). + +Dom0 support requires an IOMMU (Intel VT-d / AMD IOMMU). + + Status, domU: Supported + Status, dom0: Experimental + +### ARM + +ARM only has one guest type at the moment + + Status: Supported + +## Hypervisor file system + +### Build info + + Status: Supported + +### Hypervisor config + + Status: Supported + +### Runtime parameters + + Status: Supported + +## Toolstack + +### xl + + Status: Supported + +### Direct-boot kernel image format + +Format which the toolstack accepts for direct-boot kernels + + Supported, x86: bzImage, ELF + Supported, ARM32: zImage + Supported, ARM64: Image + +### Dom0 init support for xl + + Status, SysV: Supported + Status, systemd: Supported + Status, BSD-style: Supported + +### JSON output support for xl + +Output of information in machine-parseable JSON format + + Status: Experimental + +### Open vSwitch integration for xl + + Status, Linux: Supported + +### Virtual cpu hotplug + + Status: Supported + +### QEMU backend hotplugging for xl + + Status: Supported + +### xenlight Go package + +Go (golang) bindings for libxl + + Status: Experimental + +### Linux device model stubdomains + +Support for running qemu-xen device model in a linux stubdomain. + + Status: Tech Preview + +## Toolstack/3rd party + +### libvirt driver for xl + + Status: Supported, Security support external + +## Debugging, analysis, and crash post-mortem + +### Host serial console + + Status, NS16550: Supported + Status, EHCI: Supported + Status, Cadence UART (ARM): Supported + Status, PL011 UART (ARM): Supported + Status, Exynos 4210 UART (ARM): Supported + Status, OMAP UART (ARM): Supported + Status, SCI(F) UART: Supported + +### Hypervisor 'debug keys' + +These are functions triggered either from the host serial console, +or via the xl 'debug-keys' command, +which cause Xen to dump various hypervisor state to the console. + + Status: Supported, not security supported + +### Hypervisor synchronous console output (sync_console) + +Xen command-line flag to force synchronous console output. + + Status: Supported, not security supported + +Useful for debugging, but not suitable for production environments +due to incurred overhead. + +### gdbsx + + Status, x86: Supported, not security supported + +Debugger to debug ELF guests + +### Soft-reset for PV guests + +Soft-reset allows a new kernel to start 'from scratch' with a fresh VM state, +but with all the memory from the previous state of the VM intact. +This is primarily designed to allow "crash kernels", +which can do core dumps of memory to help with debugging in the event of a crash. + + Status: Supported + +### xentrace + +Tool to capture Xen trace buffer data + + Status, x86: Supported + +### gcov + +Export hypervisor coverage data suitable for analysis by gcov or lcov. + + Status: Supported, Not security supported + +## Memory Management + +### Dynamic memory control + +Allows a guest to add or remove memory after boot-time. +This is typically done by a guest kernel agent known as a "balloon driver". + + Status: Supported + +### Populate-on-demand memory + +This is a mechanism that allows normal operating systems with only a balloon driver +to boot with memory < maxmem. + + Status, x86 HVM: Supported + +### Memory Sharing + +Allow sharing of identical pages between guests + + Status, x86 HVM: Experimental + +### Memory Paging + +Allow pages belonging to guests to be paged to disk + + Status, x86 HVM: Experimental + +### Alternative p2m + +Alternative p2m (altp2m) allows external monitoring of guest memory +by maintaining multiple physical to machine (p2m) memory mappings. + + Status, x86 HVM: Tech Preview + Status, ARM: Tech Preview + +## Resource Management + +### CPU Pools + +Groups physical cpus into distinct groups called "cpupools", +with each pool having the capability +of using different schedulers and scheduling properties. + + Status: Supported + +### Core Scheduling + +Allows to group virtual cpus into virtual cores which are scheduled on the +physical cores. This results in never running different guests at the same +time on the same physical core. + + Status, x86: Experimental + +### Credit Scheduler + +A weighted proportional fair share virtual CPU scheduler. +This is the default scheduler. + + Status: Supported + +### Credit2 Scheduler + +A general purpose scheduler for Xen, +designed with particular focus on fairness, responsiveness, and scalability + + Status: Supported + +### RTDS based Scheduler + +A soft real-time CPU scheduler +built to provide guaranteed CPU capacity to guest VMs on SMP hosts + + Status: Experimental + +### ARINC653 Scheduler + +A periodically repeating fixed timeslice scheduler. + + Status: Supported + +Currently only single-vcpu domains are supported. + +### Null Scheduler + +A very simple, very static scheduling policy +that always schedules the same vCPU(s) on the same pCPU(s). +It is designed for maximum determinism and minimum overhead +on embedded platforms. + + Status: Experimental + +### NUMA scheduler affinity + +Enables NUMA aware scheduling in Xen + + Status, x86: Supported + +## Scalability + +### Super page support + +NB that this refers to the ability of guests +to have higher-level page table entries point directly to memory, +improving TLB performance. +On ARM, and on x86 in HAP mode, +the guest has whatever support is enabled by the hardware. + +This feature is independent +of the ARM "page granularity" feature (see below). + + Status, x86 HVM/PVH, HAP: Supported + Status, x86 HVM/PVH, Shadow, 2MiB: Supported + Status, ARM: Supported + +On x86 in shadow mode, only 2MiB (L2) superpages are available; +furthermore, they do not have the performance characteristics +of hardware superpages. + +### x86/PVHVM + +This is a useful label for a set of hypervisor features +which add paravirtualized functionality to HVM guests +for improved performance and scalability. +This includes exposing event channels to HVM guests. + + Status: Supported + +## High Availability and Fault Tolerance + +### Remus Fault Tolerance + + Status: Experimental + +### COLO Manager + + Status: Experimental + +### x86/vMCE + +Forward Machine Check Exceptions to appropriate guests + + Status: Supported + +## Virtual driver support, guest side + +### Blkfront + +Guest-side driver capable of speaking the Xen PV block protocol + + Status, Linux: Supported + Status, FreeBSD: Supported, Security support external + Status, NetBSD: Supported, Security support external + Status, OpenBSD: Supported, Security support external + Status, Windows: Supported + +### Netfront + +Guest-side driver capable of speaking the Xen PV networking protocol + + Status, Linux: Supported + Status, FreeBSD: Supported, Security support external + Status, NetBSD: Supported, Security support external + Status, OpenBSD: Supported, Security support external + Status, Windows: Supported + +### PV Framebuffer (frontend) + +Guest-side driver capable of speaking the Xen PV Framebuffer protocol + + Status, Linux (xen-fbfront): Supported + +### PV display (frontend) + +Guest-side driver capable of speaking the Xen PV display protocol + + Status, Linux: Supported + +### PV Console (frontend) + +Guest-side driver capable of speaking the Xen PV console protocol + + Status, Linux (hvc_xen): Supported + Status, FreeBSD: Supported, Security support external + Status, NetBSD: Supported, Security support external + Status, Windows: Supported + +### PV keyboard (frontend) + +Guest-side driver capable of speaking the Xen PV keyboard protocol. +Note that the "keyboard protocol" includes mouse / pointer / +multi-touch support as well. + + Status, Linux (xen-kbdfront): Supported + +### PV USB (frontend) + + Status, Linux: Supported + +### PV SCSI protocol (frontend) + + Status, Linux: Supported, with caveats + +NB that while the PV SCSI frontend is in Linux and tested regularly, +there is currently no xl support. + +### PV TPM (frontend) + +Guest-side driver capable of speaking the Xen PV TPM protocol + + Status, Linux (xen-tpmfront): Tech Preview + +### PV 9pfs frontend + +Guest-side driver capable of speaking the Xen 9pfs protocol + + Status, Linux: Tech Preview + +### PVCalls (frontend) + +Guest-side driver capable of making pv system calls + + Status, Linux: Tech Preview + +### PV sound (frontend) + +Guest-side driver capable of speaking the Xen PV sound protocol + + Status, Linux: Supported + +## Virtual device support, host side + +For host-side virtual device support, +"Supported" and "Tech preview" include xl/libxl support +unless otherwise noted. + +### Blkback + +Host-side implementations of the Xen PV block protocol. + + Status, Linux (xen-blkback): Supported + Status, QEMU (xen_disk), raw format: Supported + Status, QEMU (xen_disk), qcow format: Supported + Status, QEMU (xen_disk), qcow2 format: Supported + Status, QEMU (xen_disk), vhd format: Supported + Status, FreeBSD (blkback): Supported, Security support external + Status, NetBSD (xbdback): Supported, security support external + Status, Blktap2, raw format: Deprecated + Status, Blktap2, vhd format: Deprecated + +Backends only support raw format unless otherwise specified. + +### Netback + +Host-side implementations of Xen PV network protocol + + Status, Linux (xen-netback): Supported + Status, FreeBSD (netback): Supported, Security support external + Status, NetBSD (xennetback): Supported, Security support external + +### PV Framebuffer (backend) + +Host-side implementation of the Xen PV framebuffer protocol + + Status, QEMU: Supported + +### PV Console (xenconsoled) + +Host-side implementation of the Xen PV console protocol + + Status: Supported + +### PV keyboard (backend) + +Host-side implementation of the Xen PV keyboard protocol. +Note that the "keyboard protocol" includes mouse / pointer support as well. + + Status, QEMU: Supported + +### PV USB (backend) + +Host-side implementation of the Xen PV USB protocol + + Status, QEMU: Supported + +### PV SCSI protocol (backend) + + Status, Linux: Experimental + +NB that while the PV SCSI backend is in Linux and tested regularly, +there is currently no xl support. + +### PV TPM (backend) + + Status: Tech Preview + +### PV 9pfs (backend) + + Status, QEMU: Tech Preview + +### PVCalls (backend) + + Status, Linux: Experimental + +PVCalls backend has been checked into Linux, +but has no xl support. + +### Online resize of virtual disks + + Status: Supported + +## Security + +### Driver Domains + +"Driver domains" means allowing non-Domain 0 domains +with access to physical devices to act as back-ends. + + Status: Supported, with caveats + +See the appropriate "Device Passthrough" section +for more information about security support. + +### Device Model Stub Domains + + Status: Supported, with caveats + +Vulnerabilities of a device model stub domain +to a hostile driver domain (either compromised or untrusted) +are excluded from security support. + +### Device Model Deprivileging + + Status, Linux dom0: Tech Preview, with limited support + +This means adding extra restrictions to a device model in order to +prevent a compromised device model from attacking the rest of the +domain it's running in (normally dom0). + +"Tech preview with limited support" means we will not issue XSAs for +the _additional_ functionality provided by the feature; but we will +issue XSAs in the event that enabling this feature opens up a security +hole that would not be present without the feature disabled. + +For example, while this is classified as tech preview, a bug in libxl +which failed to change the user ID of QEMU would not receive an XSA, +since without this feature the user ID wouldn't be changed. But a +change which made it possible for a compromised guest to read +arbitrary files on the host filesystem without compromising QEMU would +be issued an XSA, since that does weaken security. + +### KCONFIG Expert + + Status: Experimental + +### Live Patching + + Status, x86: Supported + Status, ARM: Experimental + +Compile time disabled for ARM by default. + +### Virtual Machine Introspection + + Status, x86: Supported, not security supported + +### XSM & FLASK + + Status: Experimental + +Compile time disabled by default. + +Also note that using XSM +to delegate various domain control hypercalls +to particular other domains, rather than only permitting use by dom0, +is also specifically excluded from security support for many hypercalls. +Please see XSA-77 for more details. + +### FLASK default policy + + Status: Experimental + +The default policy includes FLASK labels and roles for a "typical" Xen-based system +with dom0, driver domains, stub domains, domUs, and so on. + +## Virtual Hardware, Hypervisor + +### x86/Nested PV + +This means running a Xen hypervisor inside an HVM domain on a Xen system, +with support for PV L2 guests only +(i.e., hardware virtualization extensions not provided +to the guest). + + Status, x86 Xen HVM: Tech Preview + +This works, but has performance limitations +because the L1 dom0 can only access emulated L1 devices. + +Xen may also run inside other hypervisors (KVM, Hyper-V, VMWare), +but nobody has reported on performance. + +### x86/Nested HVM + +This means providing hardware virtulization support to guest VMs +allowing, for instance, a nested Xen to support both PV and HVM guests. +It also implies support for other hypervisors, +such as KVM, Hyper-V, Bromium, and so on as guests. + + Status, x86 HVM: Experimental + +### vPMU + +Virtual Performance Management Unit for HVM guests + + Status, x86: Supported, Not security supported + +Disabled by default (enable with hypervisor command line option). +This feature is not security supported: see https://xenbits.xen.org/xsa/advisory-163.html + +### Argo: Inter-domain message delivery by hypercall + + Status: Experimental + +### x86/PCI Device Passthrough + + Status, x86 PV: Supported, with caveats + Status, x86 HVM: Supported, with caveats + +Only systems using IOMMUs are supported. + +Not compatible with migration, populate-on-demand, altp2m, +introspection, memory sharing, or memory paging. + +Because of hardware limitations +(affecting any operating system or hypervisor), +it is generally not safe to use this feature +to expose a physical device to completely untrusted guests. +However, this feature can still confer significant security benefit +when used to remove drivers and backends from domain 0 +(i.e., Driver Domains). + +### x86/Multiple IOREQ servers + +An IOREQ server provides emulated devices to HVM and PVH guests. +QEMU is normally the only IOREQ server, +but Xen has support for multiple IOREQ servers. +This allows for custom or proprietary device emulators +to be used in addition to QEMU. + + Status: Experimental + +### ARM/Non-PCI device passthrough + + Status: Supported, not security supported + +Note that this still requires an IOMMU +that covers the DMA of the device to be passed through. + +### ARM: 16K and 64K page granularity in guests + + Status: Supported, with caveats + +No support for QEMU backends in a 16K or 64K domain. + +### ARM: Guest Device Tree support + + Status: Supported + +### ARM: Guest ACPI support + + Status: Supported + +### Arm: OP-TEE Mediator + + Status: Tech Preview + +## Virtual Hardware, QEMU + +This section describes supported devices available in HVM mode using a +qemu devicemodel (the default). + + Status: Support scope restricted + +Note that other devices are available but not security supported. + +### x86/Emulated platform devices (QEMU): + + Status, piix3: Supported + +### x86/Emulated network (QEMU): + + Status, e1000: Supported + Status, rtl8193: Supported + Status, virtio-net: Supported + +### x86/Emulated storage (QEMU): + + Status, piix3 ide: Supported + Status, ahci: Supported + +See the section **Blkback** for image formats supported by QEMU. + +### x86/Emulated graphics (QEMU): + + Status, cirrus-vga: Supported + Status, stdvga: Supported + +### x86/Emulated audio (QEMU): + + Status, sb16: Supported + Status, es1370: Supported + Status, ac97: Supported + +### x86/Emulated input (QEMU): + + Status, usbmouse: Supported + Status, usbtablet: Supported + Status, ps/2 keyboard: Supported + Status, ps/2 mouse: Supported + +### x86/Emulated serial card (QEMU): + + Status, UART 16550A: Supported + +### x86/Host USB passthrough (QEMU): + + Status: Supported, not security supported + +### qemu-xen-traditional ### + +The Xen Project provides an old version of qemu with modifications +which enable use as a device model stub domain. The old version is +normally selected by default only in a stub dm configuration, but it +can be requested explicitly in other configurations, for example in +`xl` with `device_model_version="QEMU_XEN_TRADITIONAL"`. + + Status, Device Model Stub Domains: Supported, with caveats + Status, as host process device model: No security support, not recommended + +qemu-xen-traditional is security supported only for those available +devices which are supported for mainstream QEMU (see above), with +trusted driver domains (see Device Model Stub Domains). + +## Virtual Firmware + +### x86/HVM iPXE + +Booting a guest via PXE. + + Status: Supported, with caveats + +PXE inherently places full trust of the guest in the network, +and so should only be used +when the guest network is under the same administrative control +as the guest itself. + +### x86/HVM BIOS + +Booting a guest via guest BIOS firmware + + Status, SeaBIOS (qemu-xen): Supported + Status, ROMBIOS (qemu-xen-traditional): Supported + +### x86/HVM OVMF + +OVMF firmware implements the UEFI boot protocol. + + Status, qemu-xen: Supported + +# Format and definitions + +This file contains prose, and machine-readable fragments. +The data in a machine-readable fragment relate to +the section and subsection in which it is found. + +The file is in markdown format. +The machine-readable fragments are markdown literals +containing RFC-822-like (deb822-like) data. + +In each case, descriptions which expand on the name of a feature as +provided in the section heading, precede the Status indications. +Any paragraphs which follow the Status indication are caveats or +qualifications of the information provided in Status fields. + +## Keys found in the Feature Support subsections + +### Status + +This gives the overall status of the feature, +including security support status, functional completeness, etc. +Refer to the detailed definitions below. + +If support differs based on implementation +(for instance, x86 / ARM, Linux / QEMU / FreeBSD), +one line for each set of implementations will be listed. + +## Definition of Status labels + +Each Status value corresponds to levels of security support, +testing, stability, etc., as follows: + +### Experimental + + Functional completeness: No + Functional stability: Here be dragons + Interface stability: Not stable + Security supported: No + +### Tech Preview + + Functional completeness: Yes + Functional stability: Quirky + Interface stability: Provisionally stable + Security supported: No + +#### Supported + + Functional completeness: Yes + Functional stability: Normal + Interface stability: Yes + Security supported: Yes + +#### Deprecated + + Functional completeness: Yes + Functional stability: Quirky + Interface stability: No (as in, may disappear the next release) + Security supported: Yes + +All of these may appear in modified form. +There are several interfaces, for instance, +which are officially declared as not stable; +in such a case this feature may be described as "Stable / Interface not stable". + +## Definition of the status label interpretation tags + +### Functionally complete + +Does it behave like a fully functional feature? +Does it work on all expected platforms, +or does it only work for a very specific sub-case? +Does it have a sensible UI, +or do you have to have a deep understanding of the internals +to get it to work properly? + +### Functional stability + +What is the risk of it exhibiting bugs? + +General answers to the above: + + * **Here be dragons** + + Pretty likely to still crash / fail to work. + Not recommended unless you like life on the bleeding edge. + + * **Quirky** + + Mostly works but may have odd behavior here and there. + Recommended for playing around or for non-production use cases. + + * **Normal** + + Ready for production use + +### Interface stability + +If I build a system based on the current interfaces, +will they still work when I upgrade to the next version? + + * **Not stable** + + Interface is still in the early stages and + still fairly likely to be broken in future updates. + + * **Provisionally stable** + + We're not yet promising backwards compatibility, + but we think this is probably the final form of the interface. + It may still require some tweaks. + + * **Stable** + + We will try very hard to avoid breaking backwards compatibility, + and to fix any regressions that are reported. + +### Security supported + +Will XSAs be issued if security-related bugs are discovered +in the functionality? + +If "no", +anyone who finds a security-related bug in the feature +will be advised to +post it publicly to the Xen Project mailing lists +(or contact another security response team, +if a relevant one exists). + +Bugs found after the end of **Security-Support-Until** +in the Release Support section will receive an XSA +if they also affect newer, security-supported, versions of Xen. +However, the Xen Project will not provide official fixes +for non-security-supported versions. + +Three common 'diversions' from the 'Supported' category +are given the following labels: + + * **Supported, Not security supported** + + Functionally complete, normal stability, + interface stable, but no security support + + * **Supported, Security support external** + + This feature is security supported + by a different organization (not the XenProject). + See **External security support** below. + + * **Supported, with caveats** + + This feature is security supported only under certain conditions, + or support is given only for certain aspects of the feature, + or the feature should be used with care + because it is easy to use insecurely without knowing it. + Additional details will be given in the description. + +### Interaction with other features + +Not all features interact well with all other features. +Some features are only for HVM guests; some don't work with migration, &c. + +### External security support + +The XenProject security team +provides security support for XenProject projects. + +We also provide security support for Xen-related code in Linux, +which is an external project but doesn't have its own security process. + +External projects that provide their own security support for Xen-related features are listed below. + + * QEMU https://wiki.qemu.org/index.php/SecurityProcess + + * Libvirt https://libvirt.org/securityprocess.html + + * FreeBSD https://www.freebsd.org/security/ + + * NetBSD http://www.netbsd.org/support/security/ + + * OpenBSD https://www.openbsd.org/security.html diff --git a/autogen.sh b/autogen.sh new file mode 100755 index 0000000000..2be836008a --- /dev/null +++ b/autogen.sh @@ -0,0 +1,12 @@ +#!/bin/sh -e +autoconf -f +( cd tools + autoconf -f + autoheader +) +( cd stubdom + autoconf -f +) +( cd docs + autoconf -f +) diff --git a/automation/build/Makefile b/automation/build/Makefile new file mode 100644 index 0000000000..7c7612b1d9 --- /dev/null +++ b/automation/build/Makefile @@ -0,0 +1,19 @@ + +# the base of where these containers will appear +REGISTRY := registry.gitlab.com/xen-project/xen +CONTAINERS = $(subst .dockerfile,,$(wildcard */*.dockerfile)) + +help: + @echo "Builds containers for building Xen based on different distros" + @echo "To build one run 'make DISTRO/VERSION'. Available containers:" + @$(foreach file,$(sort $(CONTAINERS)),echo ${file};) + @echo "To push container builds, set the env var PUSH" + +%: %.dockerfile ## Builds containers + docker build -t $(REGISTRY)/$(@D):$(@F) -f $< $( 4.11, and you want to use containers +that run old glibc (for example, CentOS 6 or SLES11SP4), you may need to add + +``` +vsyscall=emulate +``` + +to the host kernel command line. That enables a legacy interface that is used +by old glibc. + + +Building a container +-------------------- + +There is a makefile to make this process easier. You should be +able to run `make DISTRO/VERSION` to have Docker build the container +for you. If you define the `PUSH` environment variable when running the +former `make` command, it will push the container to the [registry] if +you have access to do so and have your Docker logged into the registry. + +To login you must run `docker login registry.gitlab.com`. For more +information see the [registry help]. + +[registry]: https://gitlab.com/xen-project/xen/container_registry +[registry help]: https://gitlab.com/help/user/project/container_registry diff --git a/automation/build/archlinux/current.dockerfile b/automation/build/archlinux/current.dockerfile new file mode 100644 index 0000000000..d8fbebaf79 --- /dev/null +++ b/automation/build/archlinux/current.dockerfile @@ -0,0 +1,54 @@ +FROM archlinux/base +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +# Enable multilib repo, for dev86 package +RUN echo $'[multilib]\nInclude = /etc/pacman.d/mirrorlist' >> /etc/pacman.conf + +RUN pacman -S --refresh --sysupgrade --noconfirm --noprogressbar --needed \ + base-devel \ + bin86 \ + bridge-utils \ + bzip2 \ + dev86 \ + dtc \ + e2fsprogs \ + ghostscript \ + git \ + gnutls \ + go \ + iasl \ + inetutils \ + iproute \ + lib32-glibc \ + libaio \ + libcacard \ + libgl \ + libjpeg-turbo \ + libnl \ + libpng \ + libseccomp \ + markdown \ + net-tools \ + nss \ + perl \ + pixman \ + pkgconfig \ + python \ + sdl \ + sdl2 \ + spice \ + spice-protocol \ + systemd \ + transfig \ + usbredir \ + wget \ + xz \ + yajl \ + zlib + +ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl + +RUN useradd --create-home user +USER user +WORKDIR /build diff --git a/automation/build/centos/6.dockerfile b/automation/build/centos/6.dockerfile new file mode 100644 index 0000000000..54d022be86 --- /dev/null +++ b/automation/build/centos/6.dockerfile @@ -0,0 +1,51 @@ +FROM centos:6 +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +RUN mkdir /build +WORKDIR /build + +# work around https://github.com/moby/moby/issues/10180 +# and add EPEL for dev86 +RUN rpm --rebuilddb && \ + yum -y install \ + yum-plugin-ovl \ + epel-release \ + && yum clean all && \ + rm -rf /var/cache/yum + +# install Xen depends +RUN yum -y install \ + gcc \ + gcc-c++ \ + ncurses-devel \ + zlib-devel \ + openssl-devel \ + python-devel \ + libuuid-devel \ + pciutils-devel \ + pkgconfig \ + gettext \ + flex \ + bison \ + libaio-devel \ + glib2-devel \ + yajl-devel \ + pixman-devel \ + glibc-devel \ + glibc-devel.i686 \ + make \ + binutils \ + git \ + wget \ + acpica-tools \ + python-markdown \ + patch \ + checkpolicy \ + dev86 \ + iasl \ + xz-devel \ + bzip2 \ + nasm \ + && yum clean all && \ + rm -rf /var/cache/yum diff --git a/automation/build/centos/7.2.dockerfile b/automation/build/centos/7.2.dockerfile new file mode 100644 index 0000000000..c2f46b694c --- /dev/null +++ b/automation/build/centos/7.2.dockerfile @@ -0,0 +1,50 @@ +FROM centos:7.2.1511 +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +# ensure we only get bits from the vault for +# the version we want +COPY CentOS-7.2.repo /etc/yum.repos.d/CentOS-Base.repo + +# install EPEL for dev86, xz-devel and possibly other packages +RUN yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm && \ + yum clean all + +RUN mkdir /build +WORKDIR /build + +# work around https://github.com/moby/moby/issues/10180 +# and install Xen depends +RUN rpm --rebuilddb && \ + yum -y install \ + yum-plugin-ovl \ + gcc \ + gcc-c++ \ + ncurses-devel \ + zlib-devel \ + openssl-devel \ + python-devel \ + libuuid-devel \ + pkgconfig \ + gettext \ + flex \ + bison \ + libaio-devel \ + glib2-devel \ + yajl-devel \ + pixman-devel \ + glibc-devel \ + glibc-devel.i686 \ + make \ + binutils \ + git \ + wget \ + acpica-tools \ + python-markdown \ + patch \ + checkpolicy \ + dev86 \ + xz-devel \ + bzip2 \ + nasm \ + && yum clean all diff --git a/automation/build/centos/7.dockerfile b/automation/build/centos/7.dockerfile new file mode 100644 index 0000000000..e37d9d743a --- /dev/null +++ b/automation/build/centos/7.dockerfile @@ -0,0 +1,49 @@ +FROM centos:7 +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +RUN mkdir /build +WORKDIR /build + +# work around https://github.com/moby/moby/issues/10180 +# and add EPEL for dev86 +RUN rpm --rebuilddb && \ + yum -y install \ + yum-plugin-ovl \ + epel-release \ + && yum clean all && \ + rm -rf /var/cache/yum + +# install Xen depends +RUN yum -y install \ + gcc \ + gcc-c++ \ + ncurses-devel \ + zlib-devel \ + openssl-devel \ + python-devel \ + libuuid-devel \ + pkgconfig \ + gettext \ + flex \ + bison \ + libaio-devel \ + glib2-devel \ + yajl-devel \ + pixman-devel \ + glibc-devel \ + glibc-devel.i686 \ + make \ + binutils \ + git \ + wget \ + acpica-tools \ + python-markdown \ + patch \ + checkpolicy \ + dev86 \ + xz-devel \ + bzip2 \ + nasm \ + && yum clean all && \ + rm -rf /var/cache/yum diff --git a/automation/build/centos/CentOS-7.2.repo b/automation/build/centos/CentOS-7.2.repo new file mode 100644 index 0000000000..4da27faeb5 --- /dev/null +++ b/automation/build/centos/CentOS-7.2.repo @@ -0,0 +1,35 @@ +# CentOS-Base.repo +# +# This is a replacement file that pins things to just use CentOS 7.2 +# from the CentOS Vault. +# + +[base] +name=CentOS-7.2.1511 - Base +baseurl=http://vault.centos.org/7.2.1511/os/$basearch/ +gpgcheck=1 +gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 + +#released updates +[updates] +name=CentOS-7.2.1511 - Updates +baseurl=http://vault.centos.org/7.2.1511/updates/$basearch/ +gpgcheck=1 +gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 + +#additional packages that may be useful +[extras] +name=CentOS-7.2.1511 - Extras +baseurl=http://vault.centos.org/7.2.1511/extras/$basearch/ +gpgcheck=1 +gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 + +#additional packages that extend functionality of existing packages +[centosplus] +name=CentOS-7.2.1511 - Plus +baseurl=http://vault.centos.org/7.2.1511/centosplus/$basearch/ +gpgcheck=1 +gpgcheck=1 +enabled=0 +gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 + diff --git a/automation/build/debian/jessie-i386.dockerfile b/automation/build/debian/jessie-i386.dockerfile new file mode 100644 index 0000000000..66a6abb381 --- /dev/null +++ b/automation/build/debian/jessie-i386.dockerfile @@ -0,0 +1,50 @@ +FROM i386/debian:jessie +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +ENTRYPOINT ["linux32"] + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + bin86 \ + bcc \ + liblzma-dev \ + libc6-dev \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/build/debian/jessie.dockerfile b/automation/build/debian/jessie.dockerfile new file mode 100644 index 0000000000..1232b9e204 --- /dev/null +++ b/automation/build/debian/jessie.dockerfile @@ -0,0 +1,48 @@ +FROM debian:jessie +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + bin86 \ + bcc \ + liblzma-dev \ + libc6-dev-i386 \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/build/debian/stretch-i386.dockerfile b/automation/build/debian/stretch-i386.dockerfile new file mode 100644 index 0000000000..7b6f8eff69 --- /dev/null +++ b/automation/build/debian/stretch-i386.dockerfile @@ -0,0 +1,52 @@ +FROM i386/debian:stretch +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +ENTRYPOINT ["linux32"] + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + python3-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + bin86 \ + bcc \ + liblzma-dev \ + libc6-dev \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + apt-transport-https \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/build/debian/stretch-llvm-8.list b/automation/build/debian/stretch-llvm-8.list new file mode 100644 index 0000000000..09fe843fb2 --- /dev/null +++ b/automation/build/debian/stretch-llvm-8.list @@ -0,0 +1,3 @@ +# Strech LLVM 8 repos +deb http://apt.llvm.org/stretch/ llvm-toolchain-stretch-8 main +deb-src http://apt.llvm.org/stretch/ llvm-toolchain-stretch-8 main diff --git a/automation/build/debian/stretch.dockerfile b/automation/build/debian/stretch.dockerfile new file mode 100644 index 0000000000..32742f7f39 --- /dev/null +++ b/automation/build/debian/stretch.dockerfile @@ -0,0 +1,63 @@ +FROM debian:stretch +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + python3-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + bin86 \ + bcc \ + liblzma-dev \ + libc6-dev-i386 \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + gnupg \ + apt-transport-https \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* + +RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add - +COPY stretch-llvm-8.list /etc/apt/sources.list.d/ + +RUN apt-get update && \ + apt-get --quiet --yes install \ + clang-8 \ + lld-8 \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/build/debian/unstable-arm64v8.dockerfile b/automation/build/debian/unstable-arm64v8.dockerfile new file mode 100644 index 0000000000..8455d67b72 --- /dev/null +++ b/automation/build/debian/unstable-arm64v8.dockerfile @@ -0,0 +1,49 @@ +FROM arm64v8/debian:unstable +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + python3-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + libfdt-dev \ + bin86 \ + bcc \ + liblzma-dev \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/build/debian/unstable-i386.dockerfile b/automation/build/debian/unstable-i386.dockerfile new file mode 100644 index 0000000000..86ff3585df --- /dev/null +++ b/automation/build/debian/unstable-i386.dockerfile @@ -0,0 +1,52 @@ +FROM i386/debian:unstable +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +ENTRYPOINT ["linux32"] + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + python3-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + bin86 \ + bcc \ + liblzma-dev \ + libc6-dev \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + apt-transport-https \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/build/debian/unstable-llvm-8.list b/automation/build/debian/unstable-llvm-8.list new file mode 100644 index 0000000000..dc119fa0b4 --- /dev/null +++ b/automation/build/debian/unstable-llvm-8.list @@ -0,0 +1,3 @@ +# Unstable LLVM 8 repos +deb http://apt.llvm.org/unstable/ llvm-toolchain-8 main +deb-src http://apt.llvm.org/unstable/ llvm-toolchain-8 main diff --git a/automation/build/debian/unstable.dockerfile b/automation/build/debian/unstable.dockerfile new file mode 100644 index 0000000000..aeb4f3448b --- /dev/null +++ b/automation/build/debian/unstable.dockerfile @@ -0,0 +1,64 @@ +FROM debian:unstable +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + python3-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + bin86 \ + bcc \ + liblzma-dev \ + libc6-dev-i386 \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + gnupg \ + apt-transport-https \ + golang \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* + +RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|apt-key add - +COPY unstable-llvm-8.list /etc/apt/sources.list.d/ + +RUN apt-get update && \ + apt-get --quiet --yes install \ + clang-8 \ + lld-8 \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/build/fedora/29.dockerfile b/automation/build/fedora/29.dockerfile new file mode 100644 index 0000000000..6a4e5b0413 --- /dev/null +++ b/automation/build/fedora/29.dockerfile @@ -0,0 +1,45 @@ +FROM fedora:29 +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +RUN mkdir /build +WORKDIR /build + +# install Xen depends +RUN dnf -y install \ + clang \ + gcc \ + gcc-c++ \ + ncurses-devel \ + zlib-devel \ + openssl-devel \ + python-devel \ + python3-devel \ + libuuid-devel \ + pkgconfig \ + gettext \ + flex \ + bison \ + libaio-devel \ + glib2-devel \ + yajl-devel \ + pixman-devel \ + glibc-devel \ + glibc-devel.i686 \ + make \ + binutils \ + git \ + wget \ + acpica-tools \ + python-markdown \ + patch \ + checkpolicy \ + dev86 \ + xz-devel \ + bzip2 \ + nasm \ + ocaml \ + ocaml-findlib \ + golang \ + && dnf clean all && \ + rm -rf /var/cache/dnf diff --git a/automation/build/suse/opensuse-leap.dockerfile b/automation/build/suse/opensuse-leap.dockerfile new file mode 100644 index 0000000000..c60c13c943 --- /dev/null +++ b/automation/build/suse/opensuse-leap.dockerfile @@ -0,0 +1,69 @@ +FROM opensuse/leap +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV USER root + +RUN mkdir /build +WORKDIR /build + +RUN zypper ref && zypper up -y --no-recommends +RUN zypper install -y --no-recommends \ + acpica \ + bc \ + bin86 \ + bison \ + bzip2 \ + checkpolicy \ + clang \ + cmake \ + dev86 \ + discount \ + flex \ + gcc \ + gcc-c++ \ + gettext-tools \ + git \ + glib2-devel \ + glibc-devel \ + glibc-devel-32bit \ + gzip \ + hostname \ + libSDL2-devel \ + libaio-devel \ + libbz2-devel \ + libext2fs-devel \ + libgnutls-devel \ + libjpeg62-devel \ + libnl3-devel \ + libnuma-devel \ + libpixman-1-0-devel \ + libpng16-devel \ + libssh2-devel \ + libtasn1-devel \ + libuuid-devel \ + libyajl-devel \ + lzo-devel \ + make \ + nasm \ + ncurses-devel \ + ocaml \ + ocaml-findlib-devel \ + ocaml-ocamlbuild \ + ocaml-ocamldoc \ + pandoc \ + patch \ + pkg-config \ + python \ + python-devel \ + python3-devel \ + systemd-devel \ + tar \ + transfig \ + valgrind-devel \ + wget \ + which \ + xz-devel \ + zlib-devel \ + && \ + zypper clean -a diff --git a/automation/build/suse/opensuse-tumbleweed.dockerfile b/automation/build/suse/opensuse-tumbleweed.dockerfile new file mode 100644 index 0000000000..084cce0921 --- /dev/null +++ b/automation/build/suse/opensuse-tumbleweed.dockerfile @@ -0,0 +1,70 @@ +FROM opensuse/tumbleweed +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV USER root + +RUN mkdir /build +WORKDIR /build + +RUN zypper ref && zypper up -y --no-recommends +RUN zypper install -y --no-recommends \ + acpica \ + bc \ + bin86 \ + bison \ + bzip2 \ + checkpolicy \ + clang \ + cmake \ + dev86 \ + discount \ + flex \ + gcc \ + gcc-c++ \ + gettext-tools \ + git \ + glib2-devel \ + glibc-devel \ + glibc-devel-32bit \ + gzip \ + hostname \ + libSDL2-devel \ + libaio-devel \ + libbz2-devel \ + libext2fs-devel \ + libgnutls-devel \ + libjpeg62-devel \ + libnl3-devel \ + libnuma-devel \ + libpixman-1-0-devel \ + libpng16-devel \ + libssh2-devel \ + libtasn1-devel \ + libuuid-devel \ + libyajl-devel \ + lzo-devel \ + make \ + nasm \ + ncurses-devel \ + ocaml \ + ocaml-findlib-devel \ + ocaml-ocamlbuild \ + ocaml-ocamldoc \ + pandoc \ + patch \ + pkg-config \ + python \ + python-devel \ + python3 \ + python3-devel \ + systemd-devel \ + tar \ + transfig \ + valgrind-devel \ + wget \ + which \ + xz-devel \ + zlib-devel \ + && \ + zypper clean -a diff --git a/automation/build/suse/sles11sp4.dockerfile b/automation/build/suse/sles11sp4.dockerfile new file mode 100644 index 0000000000..ff69a99afc --- /dev/null +++ b/automation/build/suse/sles11sp4.dockerfile @@ -0,0 +1,20 @@ +FROM registry.gitlab.com/xen-project/xen/suse:sles11sp4-base +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV USER root + +RUN mkdir /build +WORKDIR /build + +# Nothing else is needed -- base image already contain everything. + +# Note: +# +# SLES11 SP4 runs pre-2.13 glibc, which requires vsyscall support. Most +# distros nowadays disable vsyscall. To run this container, the host needs to +# have vsyscall=emulate in its kernel command line. +# +# Due to various issues in SLES11 SP4, you might want to disable building +# certain components. Known *not bulding* components include OVMF, SEABIOS +# and upstream QEMU. diff --git a/automation/build/ubuntu/bionic.dockerfile b/automation/build/ubuntu/bionic.dockerfile new file mode 100644 index 0000000000..712b2e4722 --- /dev/null +++ b/automation/build/ubuntu/bionic.dockerfile @@ -0,0 +1,49 @@ +FROM ubuntu:18.04 +LABEL maintainer.name="The Xen Project " \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + python3-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + bin86 \ + bcc \ + liblzma-dev \ + libc6-dev-i386 \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/build/ubuntu/trusty.dockerfile b/automation/build/ubuntu/trusty.dockerfile new file mode 100644 index 0000000000..397a28061d --- /dev/null +++ b/automation/build/ubuntu/trusty.dockerfile @@ -0,0 +1,49 @@ +FROM ubuntu:14.04 +LABEL maintainer.name="The Xen Project" \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + python3-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + bin86 \ + bcc \ + liblzma-dev \ + libc6-dev-i386 \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/build/ubuntu/xenial.dockerfile b/automation/build/ubuntu/xenial.dockerfile new file mode 100644 index 0000000000..ce0e84fa2f --- /dev/null +++ b/automation/build/ubuntu/xenial.dockerfile @@ -0,0 +1,49 @@ +FROM ubuntu:16.04 +LABEL maintainer.name="The Xen Project " \ + maintainer.email="xen-devel@lists.xenproject.org" + +ENV DEBIAN_FRONTEND=noninteractive +ENV USER root + +RUN mkdir /build +WORKDIR /build + +# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + zlib1g-dev \ + libncurses5-dev \ + libssl-dev \ + python-dev \ + python3-dev \ + xorg-dev \ + uuid-dev \ + libyajl-dev \ + libaio-dev \ + libglib2.0-dev \ + clang \ + libpixman-1-dev \ + pkg-config \ + flex \ + bison \ + gettext \ + acpica-tools \ + bin86 \ + bcc \ + liblzma-dev \ + libc6-dev-i386 \ + libnl-3-dev \ + ocaml-nox \ + libfindlib-ocaml-dev \ + markdown \ + transfig \ + pandoc \ + checkpolicy \ + wget \ + git \ + nasm \ + && \ + apt-get autoremove -y && \ + apt-get clean && \ + rm -rf /var/lib/apt/lists* /tmp/* /var/tmp/* diff --git a/automation/configs/x86/hvm_only_config b/automation/configs/x86/hvm_only_config new file mode 100644 index 0000000000..9efbddd535 --- /dev/null +++ b/automation/configs/x86/hvm_only_config @@ -0,0 +1,3 @@ +CONFIG_HVM=y +# CONFIG_PV is not set +# CONFIG_DEBUG is not set diff --git a/automation/configs/x86/no_hvm_pv_config b/automation/configs/x86/no_hvm_pv_config new file mode 100644 index 0000000000..0bf6a8e468 --- /dev/null +++ b/automation/configs/x86/no_hvm_pv_config @@ -0,0 +1,3 @@ +# CONFIG_HVM is not set +# CONFIG_PV is not set +# CONFIG_DEBUG is not set diff --git a/automation/configs/x86/pv_only_config b/automation/configs/x86/pv_only_config new file mode 100644 index 0000000000..e9d8b4a7c7 --- /dev/null +++ b/automation/configs/x86/pv_only_config @@ -0,0 +1,3 @@ +CONFIG_PV=y +# CONFIG_HVM is not set +# CONFIG_DEBUG is not set diff --git a/automation/gitlab-ci/build-each-commit.sh b/automation/gitlab-ci/build-each-commit.sh new file mode 100755 index 0000000000..19e337b468 --- /dev/null +++ b/automation/gitlab-ci/build-each-commit.sh @@ -0,0 +1,18 @@ +#!/bin/bash + +# For a newly pushed branch the BEFORE_SHA will be all 0s +if [[ ${BASE} == 0000000000000000000000000000000000000000 ]]; then + echo "Newly pushed branch, skipped" + exit 0 +fi + +git merge-base --is-ancestor ${BASE} ${TIP} +if [[ $? -ne 0 ]]; then + echo "${TIP} is not a descendent of ${BASE}, skipped" + exit 0 +fi + +echo "Building ${BASE}..${TIP}" + +NON_SYMBOLIC_REF=1 ./automation/scripts/build-test.sh ${BASE} ${TIP} \ + bash -c "git clean -ffdx && ./automation/scripts/build" diff --git a/automation/gitlab-ci/build.yaml b/automation/gitlab-ci/build.yaml new file mode 100644 index 0000000000..1e61d30c85 --- /dev/null +++ b/automation/gitlab-ci/build.yaml @@ -0,0 +1,446 @@ +.build-tmpl: &build + stage: build + image: registry.gitlab.com/xen-project/xen/${CONTAINER} + script: + - ./automation/scripts/build 2>&1 | tee build.log + artifacts: + paths: + - binaries/ + - xen-config + - '*.log' + when: always + except: + - master + - smoke + - /^coverity-tested\/.*/ + - /^stable-.*/ + +.gcc-tmpl: + variabes: &gcc + CC: gcc + CXX: g++ + +.clang-tmpl: + variables: &clang + CC: clang + CXX: clang++ + clang: y + +.clang-8-tmpl: + variables: &clang-8 + CC: clang-8 + CXX: clang++-8 + LD: ld.lld-8 + clang: y + +.x86-64-build-tmpl: + <<: *build + variables: + XEN_TARGET_ARCH: x86_64 + tags: + - x86_64 + +.x86-64-build: + extends: .x86-64-build-tmpl + variables: + debug: n + +.x86-64-build-debug: + extends: .x86-64-build-tmpl + variables: + debug: y + +.x86-32-build-tmpl: + <<: *build + variables: + XEN_TARGET_ARCH: x86_32 + tags: + - x86_32 + +.x86-32-build: + extends: .x86-32-build-tmpl + variables: + debug: n + +.x86-32-build-debug: + extends: .x86-32-build-tmpl + variables: + debug: y + +.gcc-x86-64-build: + extends: .x86-64-build + variables: + <<: *gcc + +.gcc-x86-64-build-debug: + extends: .x86-64-build-debug + variables: + <<: *gcc + +.gcc-x86-32-build: + extends: .x86-32-build + variables: + <<: *gcc + +.gcc-x86-32-build-debug: + extends: .x86-32-build-debug + variables: + <<: *gcc + +.clang-x86-64-build: + extends: .x86-64-build + variables: + <<: *clang + +.clang-x86-64-build-debug: + extends: .x86-64-build-debug + variables: + <<: *clang + +.clang-8-x86-64-build: + extends: .x86-64-build + variables: + <<: *clang-8 + +.clang-8-x86-64-build-debug: + extends: .x86-64-build-debug + variables: + <<: *clang-8 + +.clang-x86-32-build: + extends: .x86-32-build + variables: + <<: *clang + +.clang-x86-32-build-debug: + extends: .x86-32-build-debug + variables: + <<: *clang + +.arm64-build-tmpl: + <<: *build + variables: + XEN_TARGET_ARCH: arm64 + tags: + - arm64 + +.arm64-build: + extends: .arm64-build-tmpl + variables: + debug: n + +.arm64-build-debug: + extends: .arm64-build-tmpl + variables: + debug: y + +.gcc-arm64-build: + extends: .arm64-build + variables: + <<: *gcc + +.gcc-arm64-build-debug: + extends: .arm64-build-debug + variables: + <<: *gcc + +# Jobs below this line + +archlinux-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: archlinux:current + +archlinux-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: archlinux:current + +centos-7-2-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: centos:7.2 + +centos-7-2-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: centos:7.2 + +centos-7-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: centos:7 + +centos-7-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: centos:7 + +centos-6-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: centos:6 + +centos-6-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: centos:6 + +debian-jessie-clang: + extends: .clang-x86-64-build + variables: + CONTAINER: debian:jessie + +debian-jessie-clang-debug: + extends: .clang-x86-64-build-debug + variables: + CONTAINER: debian:jessie + +debian-jessie-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: debian:jessie + +debian-jessie-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: debian:jessie + +debian-jessie-32-clang: + extends: .clang-x86-32-build + variables: + CONTAINER: debian:jessie-i386 + +debian-jessie-32-clang-debug: + extends: .clang-x86-32-build-debug + variables: + CONTAINER: debian:jessie-i386 + +debian-jessie-32-gcc: + extends: .gcc-x86-32-build + variables: + CONTAINER: debian:jessie-i386 + +debian-jessie-32-gcc-debug: + extends: .gcc-x86-32-build-debug + variables: + CONTAINER: debian:jessie-i386 + +debian-stretch-clang: + extends: .clang-x86-64-build + variables: + CONTAINER: debian:stretch + +debian-stretch-clang-debug: + extends: .clang-x86-64-build-debug + variables: + CONTAINER: debian:stretch + +debian-stretch-clang-8: + extends: .clang-8-x86-64-build + variables: + CONTAINER: debian:stretch + +debian-stretch-clang-8-debug: + extends: .clang-8-x86-64-build-debug + variables: + CONTAINER: debian:stretch + +debian-stretch-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: debian:stretch + +debian-stretch-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: debian:stretch + +debian-stretch-32-clang: + extends: .clang-x86-32-build + variables: + CONTAINER: debian:stretch-i386 + +debian-stretch-32-clang-debug: + extends: .clang-x86-32-build-debug + variables: + CONTAINER: debian:stretch-i386 + +debian-stretch-32-gcc: + extends: .gcc-x86-32-build + variables: + CONTAINER: debian:stretch-i386 + +debian-stretch-32-gcc-debug: + extends: .gcc-x86-32-build-debug + variables: + CONTAINER: debian:stretch-i386 + +debian-unstable-clang: + extends: .clang-x86-64-build + variables: + CONTAINER: debian:unstable + +debian-unstable-clang-debug: + extends: .clang-x86-64-build-debug + variables: + CONTAINER: debian:unstable + +debian-unstable-clang-8: + extends: .clang-8-x86-64-build + variables: + CONTAINER: debian:unstable + +debian-unstable-clang-8-debug: + extends: .clang-8-x86-64-build-debug + variables: + CONTAINER: debian:unstable + +debian-unstable-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: debian:unstable + +debian-unstable-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: debian:unstable + +debian-unstable-gcc-randconfig: + extends: .gcc-x86-64-build + variables: + CONTAINER: debian:unstable + RANDCONFIG: y + +debian-unstable-gcc-debug-randconfig: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: debian:unstable + RANDCONFIG: y + +debian-unstable-32-clang: + extends: .clang-x86-32-build + variables: + CONTAINER: debian:unstable-i386 + +debian-unstable-32-clang-debug: + extends: .clang-x86-32-build-debug + variables: + CONTAINER: debian:unstable-i386 + +debian-unstable-32-gcc: + extends: .gcc-x86-32-build + variables: + CONTAINER: debian:unstable-i386 + +debian-unstable-32-gcc-debug: + extends: .gcc-x86-32-build-debug + variables: + CONTAINER: debian:unstable-i386 + +fedora-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: fedora:29 + +fedora-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: fedora:29 + +# Ubuntu Trusty's Clang is 3.4 while Xen requires 3.5 + +ubuntu-trusty-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: ubuntu:trusty + +ubuntu-trusty-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: ubuntu:trusty + +ubuntu-xenial-clang: + extends: .clang-x86-64-build + variables: + CONTAINER: ubuntu:xenial + +ubuntu-xenial-clang-debug: + extends: .clang-x86-64-build-debug + variables: + CONTAINER: ubuntu:xenial + +ubuntu-xenial-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: ubuntu:xenial + +ubuntu-xenial-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: ubuntu:xenial + +ubuntu-bionic-clang: + extends: .clang-x86-64-build + variables: + CONTAINER: ubuntu:bionic + +ubuntu-bionic-clang-debug: + extends: .clang-x86-64-build-debug + variables: + CONTAINER: ubuntu:bionic + +ubuntu-bionic-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: ubuntu:bionic + +ubuntu-bionic-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: ubuntu:bionic + +opensuse-leap-clang: + extends: .clang-x86-64-build + variables: + CONTAINER: suse:opensuse-leap + +opensuse-leap-clang-debug: + extends: .clang-x86-64-build-debug + variables: + CONTAINER: suse:opensuse-leap + +opensuse-leap-gcc: + extends: .gcc-x86-64-build + variables: + CONTAINER: suse:opensuse-leap + +opensuse-leap-gcc-debug: + extends: .gcc-x86-64-build-debug + variables: + CONTAINER: suse:opensuse-leap + +# Arm builds + +debian-unstable-gcc-arm64: + extends: .gcc-arm64-build + variables: + CONTAINER: debian:unstable-arm64v8 + +debian-unstable-gcc-debug-arm64: + extends: .gcc-arm64-build-debug + variables: + CONTAINER: debian:unstable-arm64v8 + +debian-unstable-gcc-arm64-randconfig: + extends: .gcc-arm64-build + variables: + CONTAINER: debian:unstable-arm64v8 + RANDCONFIG: y + +debian-unstable-gcc-debug-arm64-randconfig: + extends: .gcc-arm64-build-debug + variables: + CONTAINER: debian:unstable-arm64v8 + RANDCONFIG: y + diff --git a/automation/gitlab-ci/test.yaml b/automation/gitlab-ci/test.yaml new file mode 100644 index 0000000000..793feafe8b --- /dev/null +++ b/automation/gitlab-ci/test.yaml @@ -0,0 +1,111 @@ +# Test jobs +build-each-commit-gcc: + stage: test + image: registry.gitlab.com/xen-project/xen/${CONTAINER} + variables: + CONTAINER: debian:stretch + XEN_TARGET_ARCH: x86_64 + CC: gcc + script: + - BASE=${BASE_SHA:-${CI_COMMIT_BEFORE_SHA}} TIP=${TIP_SHA:-${CI_COMMIT_SHA}} ./automation/gitlab-ci/build-each-commit.sh 2>&1 | tee ../build-each-commit-gcc.log + - mv ../build-each-commit-gcc.log . + artifacts: + paths: + - '*.log' + when: always + dependencies: [] + tags: + - x86_64 + except: + - master + - smoke + - /^coverity-tested\/.*/ + - /^stable-.*/ + +qemu-smoke-x86-64-gcc: + stage: test + image: registry.gitlab.com/xen-project/xen/${CONTAINER} + variables: + CONTAINER: debian:stretch + script: + - ./automation/scripts/qemu-smoke-x86-64.sh pv 2>&1 | tee qemu-smoke-x86-64.log + artifacts: + paths: + - smoke.serial + - '*.log' + when: always + dependencies: + - debian-stretch-gcc-debug + tags: + - x86_64 + except: + - master + - smoke + - /^coverity-tested\/.*/ + - /^stable-.*/ + +qemu-smoke-x86-64-clang: + stage: test + image: registry.gitlab.com/xen-project/xen/${CONTAINER} + variables: + CONTAINER: debian:stretch + script: + - ./automation/scripts/qemu-smoke-x86-64.sh pv 2>&1 | tee qemu-smoke-x86-64.log + artifacts: + paths: + - smoke.serial + - '*.log' + when: always + dependencies: + - debian-unstable-clang-debug + tags: + - x86_64 + except: + - master + - smoke + - /^coverity-tested\/.*/ + - /^stable-.*/ + +qemu-smoke-x86-64-gcc-pvh: + stage: test + image: registry.gitlab.com/xen-project/xen/${CONTAINER} + variables: + CONTAINER: debian:stretch + script: + - ./automation/scripts/qemu-smoke-x86-64.sh pvh 2>&1 | tee qemu-smoke-x86-64.log + artifacts: + paths: + - smoke.serial + - '*.log' + when: always + dependencies: + - debian-stretch-gcc-debug + tags: + - x86_64 + except: + - master + - smoke + - /^coverity-tested\/.*/ + - /^stable-.*/ + +qemu-smoke-x86-64-clang-pvh: + stage: test + image: registry.gitlab.com/xen-project/xen/${CONTAINER} + variables: + CONTAINER: debian:stretch + script: + - ./automation/scripts/qemu-smoke-x86-64.sh pvh 2>&1 | tee qemu-smoke-x86-64.log + artifacts: + paths: + - smoke.serial + - '*.log' + when: always + dependencies: + - debian-unstable-clang-debug + tags: + - x86_64 + except: + - master + - smoke + - /^coverity-tested\/.*/ + - /^stable-.*/ diff --git a/automation/scripts/build b/automation/scripts/build new file mode 100755 index 0000000000..0cd0f3971d --- /dev/null +++ b/automation/scripts/build @@ -0,0 +1,65 @@ +#!/bin/bash -ex + +$CC --version + +# Express the compiler version as an integer. e.g. GCC 4.9.2 => 0x040902 +cc-ver() +{ + $CC -dumpversion | awk -F. '{ printf "0x%02x%02x%02x", $1, $2, $3 }' +} + +# random config or default config +if [[ "${RANDCONFIG}" == "y" ]]; then + make -C xen KCONFIG_ALLCONFIG=tools/kconfig/allrandom.config randconfig +else + make -C xen defconfig +fi + +# build up our configure options +cfgargs=() +cfgargs+=("--enable-docs") + +if [[ "${CC}" == "clang"* ]]; then + # SeaBIOS cannot be built with clang + cfgargs+=("--with-system-seabios=/usr/share/seabios/bios.bin") + # iPXE cannot be built with clang + cfgargs+=("--with-system-ipxe=/usr/lib/ipxe/ipxe.pxe") + # newlib cannot be built with clang so we cannot build stubdoms + cfgargs+=("--disable-stubdom") +fi + +# Qemu requires Python 3.5 or later +if ! type python3 || python3 -c "import sys; res = sys.version_info < (3, 5); exit(not(res))"; then + cfgargs+=("--with-system-qemu=/bin/false") +fi + +# SeaBIOS requires GCC 4.6 or later +if [[ "${CC}" == "gcc" && `cc-ver` -lt 0x040600 ]]; then + cfgargs+=("--with-system-seabios=/bin/false") +fi + +./configure "${cfgargs[@]}" + +make -j$(nproc) dist + +# Extract artifacts to avoid getting rewritten by customised builds +cp xen/.config xen-config +mkdir binaries +if [[ "${XEN_TARGET_ARCH}" == "x86_64" ]]; then + cp xen/xen binaries/xen +fi + +# Build all the configs we care about +case ${XEN_TARGET_ARCH} in + x86_64) arch=x86 ;; + *) exit 0 ;; +esac + +cfg_dir="automation/configs/${arch}" +for cfg in `ls ${cfg_dir}`; do + echo "Building $cfg" + make -j$(nproc) -C xen clean + rm -f xen/.config + make -C xen KBUILD_DEFCONFIG=../../../../${cfg_dir}/${cfg} XEN_CONFIG_EXPERT=y defconfig + make -j$(nproc) -C xen XEN_CONFIG_EXPERT=y +done diff --git a/automation/scripts/build-test.sh b/automation/scripts/build-test.sh new file mode 100755 index 0000000000..da643adc01 --- /dev/null +++ b/automation/scripts/build-test.sh @@ -0,0 +1,76 @@ +#!/bin/bash + +# Run command on every commit within the range specified. If no command is +# provided, use the default one to clean and build the whole tree. +# +# The default rune is rather simple. To do a cross-build, please put your usual +# build rune in a shell script and invoke it with this script. +# +# Set NON_SYMBOLIC_REF=1 if you want to use this script in detached HEAD state. +# This is currently used by automated test system. + +if test $# -lt 2 ; then + echo "Usage:" + echo " $0 [CMD]" + echo " If [CMD] is not specified, run the default command" + echo " git clean -fdx && ./configure && make -j4" + exit 1 +fi + +pushd `git rev-parse --show-toplevel` + +status=`git status -s` +if test -n "$status"; then + echo "Tree is dirty, aborted" + exit 1 +fi + +BASE=$1; shift +TIP=$1; shift + +if [[ "_${NON_SYMBOLIC_REF}" != "_1" ]]; then + ORIG=`git symbolic-ref -q --short HEAD` + if test $? -ne 0; then + echo "Detached HEAD, aborted" + exit 1 + fi +else + ORIG=`git rev-parse HEAD` +fi + +ret=1 +while read num rev; do + echo "Testing $num $rev" + + git checkout $rev + ret=$? + if test $ret -ne 0; then + echo "Failed to checkout $num $rev with $ret" + break + fi + + if test $# -eq 0 ; then + git clean -fdx && ./configure && make -j4 + else + "$@" + fi + ret=$? + if test $ret -ne 0; then + echo "Failed at $num $rev with $ret" + break + fi + echo +done < <(git rev-list $BASE..$TIP | nl -ba | tac) + +echo "Restoring original HEAD" +git checkout $ORIG +gco_ret=$? +if test $gco_ret -ne 0; then + echo "Failed to restore orignal HEAD. Check tree status before doing anything else!" + exit $gco_ret +fi + +if test $ret -eq 0; then + echo "ok." +fi +exit $ret diff --git a/automation/scripts/containerize b/automation/scripts/containerize new file mode 100755 index 0000000000..a75d54566c --- /dev/null +++ b/automation/scripts/containerize @@ -0,0 +1,105 @@ +#!/bin/bash + +# +# DOCKER_CMD should be either `docker` or `podman`. +# +# if using (rootless) podman, remember to set /etc/subuid +# and /etc/subgid. +# +docker_cmd=${DOCKER_CMD:-"docker"} +[ "$DOCKER_CMD" = "podman" ] && userns_podman="--userns=keep-id" + +einfo() { + echo "$*" >&2 +} + +die() { + echo "$*" >&2 + exit 1 +} + +# +# The caller is expected to override the CONTAINER environment +# variable with the container they wish to launch. +# +BASE="registry.gitlab.com/xen-project/xen" +case "_${CONTAINER}" in + _archlinux|_arch) CONTAINER="${BASE}/archlinux:current" ;; + _centos6) CONTAINER="${BASE}/centos:6" ;; + _centos7) CONTAINER="${BASE}/centos:7" ;; + _centos72) CONTAINER="${BASE}/centos:7.2" ;; + _fedora) CONTAINER="${BASE}/fedora:29";; + _jessie) CONTAINER="${BASE}/debian:jessie" ;; + _stretch|_) CONTAINER="${BASE}/debian:stretch" ;; + _unstable|_) CONTAINER="${BASE}/debian:unstable" ;; + _trusty) CONTAINER="${BASE}/ubuntu:trusty" ;; + _xenial) CONTAINER="${BASE}/ubuntu:xenial" ;; + _opensuse-leap|_leap) CONTAINER="${BASE}/suse:opensuse-leap" ;; + _opensuse-tumbleweed|_tumbleweed) CONTAINER="${BASE}/suse:opensuse-tumbleweed" ;; +esac + +# Use this variable to control whether root should be used +case "_${CONTAINER_UID0}" in + _1) userarg= ;; + _0|_) userarg="-u $(id -u) $userns_podman" ;; +esac + +# Save the commands for future use +cmd=$@ + +# If no command was specified, just drop us into a shell if we're interactive +[ $# -eq 0 ] && tty -s && cmd="/bin/bash" + +# Are we in an interactive terminal? +tty -s && termint=t + +# +# Fetch the latest version of the container in hub.docker.com, +# unless it's a newly created local copy. +# +if [[ "_${CONTAINER_NO_PULL}" != "_1" ]]; then + einfo "*** Ensuring ${CONTAINER} is up to date" + ${docker_cmd} pull ${CONTAINER} > /dev/null || \ + die "Failed to update container" +fi + +if hash greadlink > /dev/null 2>&1; then + READLINK=greadlink +elif [[ $(uname -s) == "Darwin" ]]; then + echo "Unable to forward SSH agent without coreutils installed" + unset SSH_AUTH_SOCK +else + READLINK=readlink +fi + +# Ensure we've got what we need for SSH_AUTH_SOCK +if [[ -n ${SSH_AUTH_SOCK} ]]; then + fullpath_sock=$(${READLINK} -f ${SSH_AUTH_SOCK} 2> /dev/null) + if [ $? -ne 0 ]; then + echo "Invalid SSH_AUTH_SOCK: ${SSH_AUTH_SOCK}" + unset SSH_AUTH_SOCK + else + SSH_AUTH_DIR=$(dirname ${fullpath_sock}) + SSH_AUTH_NAME=$(basename ${fullpath_sock}) + fi +fi + +# Figure out the base of what we want as our sources +# by using the top of the git repo +if [[ -z ${CONTAINER_PATH} ]]; then + CONTAINER_PATH=$(git rev-parse --show-toplevel) +fi + +# Kick off Docker +einfo "*** Launching container ..." +exec ${docker_cmd} run \ + ${userarg} \ + ${SSH_AUTH_SOCK:+-e SSH_AUTH_SOCK="/tmp/ssh-agent/${SSH_AUTH_NAME}"} \ + -v "${CONTAINER_PATH}":/build:rw \ + -v "${HOME}/.ssh":/root/.ssh:ro \ + ${SSH_AUTH_DIR:+-v "${SSH_AUTH_DIR}":/tmp/ssh-agent} \ + ${XEN_CONFIG_EXPERT:+-e XEN_CONFIG_EXPERT=${XEN_CONFIG_EXPERT}} \ + ${CONTAINER_ARGS} \ + -${termint}i --rm -- \ + ${CONTAINER} \ + ${cmd} diff --git a/automation/scripts/qemu-smoke-x86-64.sh b/automation/scripts/qemu-smoke-x86-64.sh new file mode 100755 index 0000000000..09152e3e9c --- /dev/null +++ b/automation/scripts/qemu-smoke-x86-64.sh @@ -0,0 +1,32 @@ +#!/bin/bash + +set -ex + +# variant should be either pv or pvh +variant=$1 + +# Install QEMU +export DEBIAN_FRONTENT=noninteractive +apt-get -qy update +apt-get -qy install qemu-system-x86 + +# Clone and build XTF +git clone https://xenbits.xen.org/git-http/xtf.git +cd xtf && make -j$(nproc) && cd - + +case $variant in + pvh) k=test-hvm32pae-example extra="dom0-iommu=none dom0=pvh" ;; + *) k=test-pv32pae-example extra= ;; +esac + +rm -f smoke.serial +set +e +timeout -k 1 30 \ +qemu-system-x86_64 -nographic -kernel binaries/xen \ + -initrd xtf/tests/example/$k \ + -append "loglvl=all com1=115200,,8n1 console=com1 noreboot \ + console_timestamps=boot $extra" \ + -m 512 -monitor none -serial file:smoke.serial +set -e +grep -q 'Test result: SUCCESS' smoke.serial || exit 1 +exit 0 diff --git a/config.guess b/config.guess new file mode 100644 index 0000000000..4cd9454b35 --- /dev/null +++ b/config.guess @@ -0,0 +1,1658 @@ +#! /bin/sh +# Attempt to guess a canonical system name. +# Copyright 1992-2019 Free Software Foundation, Inc. + +timestamp='2019-04-28' + +# This file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, see . +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that +# program. This Exception is an additional permission under section 7 +# of the GNU General Public License, version 3 ("GPLv3"). +# +# Originally written by Per Bothner; maintained since 2000 by Ben Elliston. +# +# You can get the latest version of this script from: +# https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess +# +# Please send patches to . + + +me=`echo "$0" | sed -e 's,.*/,,'` + +usage="\ +Usage: $0 [OPTION] + +Output the configuration name of the system \`$me' is run on. + +Options: + -h, --help print this help, then exit + -t, --time-stamp print date of last modification, then exit + -v, --version print version number, then exit + +Report bugs and patches to ." + +version="\ +GNU config.guess ($timestamp) + +Originally written by Per Bothner. +Copyright 1992-2019 Free Software Foundation, Inc. + +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." + +help=" +Try \`$me --help' for more information." + +# Parse command line +while test $# -gt 0 ; do + case $1 in + --time-stamp | --time* | -t ) + echo "$timestamp" ; exit ;; + --version | -v ) + echo "$version" ; exit ;; + --help | --h* | -h ) + echo "$usage"; exit ;; + -- ) # Stop option processing + shift; break ;; + - ) # Use stdin as input. + break ;; + -* ) + echo "$me: invalid option $1$help" >&2 + exit 1 ;; + * ) + break ;; + esac +done + +if test $# != 0; then + echo "$me: too many arguments$help" >&2 + exit 1 +fi + +# CC_FOR_BUILD -- compiler used by this script. Note that the use of a +# compiler to aid in system detection is discouraged as it requires +# temporary files to be created and, as you can see below, it is a +# headache to deal with in a portable fashion. + +# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still +# use `HOST_CC' if defined, but it is deprecated. + +# Portable tmp directory creation inspired by the Autoconf team. + +tmp= +# shellcheck disable=SC2172 +trap 'test -z "$tmp" || rm -fr "$tmp"' 0 1 2 13 15 + +set_cc_for_build() { + : "${TMPDIR=/tmp}" + # shellcheck disable=SC2039 + { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } || + { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir "$tmp" 2>/dev/null) ; } || + { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir "$tmp" 2>/dev/null) && echo "Warning: creating insecure temp directory" >&2 ; } || + { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } + dummy=$tmp/dummy + case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in + ,,) echo "int x;" > "$dummy.c" + for driver in cc gcc c89 c99 ; do + if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then + CC_FOR_BUILD="$driver" + break + fi + done + if test x"$CC_FOR_BUILD" = x ; then + CC_FOR_BUILD=no_compiler_found + fi + ;; + ,,*) CC_FOR_BUILD=$CC ;; + ,*,*) CC_FOR_BUILD=$HOST_CC ;; + esac +} + +# This is needed to find uname on a Pyramid OSx when run in the BSD universe. +# (ghazi@noc.rutgers.edu 1994-08-24) +if test -f /.attbin/uname ; then + PATH=$PATH:/.attbin ; export PATH +fi + +UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown +UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown +UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown +UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown + +case "$UNAME_SYSTEM" in +Linux|GNU|GNU/*) + # If the system lacks a compiler, then just pick glibc. + # We could probably try harder. + LIBC=gnu + + set_cc_for_build + cat <<-EOF > "$dummy.c" + #include + #if defined(__UCLIBC__) + LIBC=uclibc + #elif defined(__dietlibc__) + LIBC=dietlibc + #else + LIBC=gnu + #endif + EOF + eval "`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`" + + # If ldd exists, use it to detect musl libc. + if command -v ldd >/dev/null && \ + ldd --version 2>&1 | grep -q ^musl + then + LIBC=musl + fi + ;; +esac + +# Note: order is significant - the case branches are not exclusive. + +case "$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in + *:NetBSD:*:*) + # NetBSD (nbsd) targets should (where applicable) match one or + # more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*, + # *-*-netbsdecoff* and *-*-netbsd*. For targets that recently + # switched to ELF, *-*-netbsd* would select the old + # object file format. This provides both forward + # compatibility and a consistent mechanism for selecting the + # object file format. + # + # Note: NetBSD doesn't particularly care about the vendor + # portion of the name. We always set it to "unknown". + sysctl="sysctl -n hw.machine_arch" + UNAME_MACHINE_ARCH=`(uname -p 2>/dev/null || \ + "/sbin/$sysctl" 2>/dev/null || \ + "/usr/sbin/$sysctl" 2>/dev/null || \ + echo unknown)` + case "$UNAME_MACHINE_ARCH" in + armeb) machine=armeb-unknown ;; + arm*) machine=arm-unknown ;; + sh3el) machine=shl-unknown ;; + sh3eb) machine=sh-unknown ;; + sh5el) machine=sh5le-unknown ;; + earmv*) + arch=`echo "$UNAME_MACHINE_ARCH" | sed -e 's,^e\(armv[0-9]\).*$,\1,'` + endian=`echo "$UNAME_MACHINE_ARCH" | sed -ne 's,^.*\(eb\)$,\1,p'` + machine="${arch}${endian}"-unknown + ;; + *) machine="$UNAME_MACHINE_ARCH"-unknown ;; + esac + # The Operating System including object format, if it has switched + # to ELF recently (or will in the future) and ABI. + case "$UNAME_MACHINE_ARCH" in + earm*) + os=netbsdelf + ;; + arm*|i386|m68k|ns32k|sh3*|sparc|vax) + set_cc_for_build + if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ELF__ + then + # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout). + # Return netbsd for either. FIX? + os=netbsd + else + os=netbsdelf + fi + ;; + *) + os=netbsd + ;; + esac + # Determine ABI tags. + case "$UNAME_MACHINE_ARCH" in + earm*) + expr='s/^earmv[0-9]/-eabi/;s/eb$//' + abi=`echo "$UNAME_MACHINE_ARCH" | sed -e "$expr"` + ;; + esac + # The OS release + # Debian GNU/NetBSD machines have a different userland, and + # thus, need a distinct triplet. However, they do not need + # kernel version information, so it can be replaced with a + # suitable tag, in the style of linux-gnu. + case "$UNAME_VERSION" in + Debian*) + release='-gnu' + ;; + *) + release=`echo "$UNAME_RELEASE" | sed -e 's/[-_].*//' | cut -d. -f1,2` + ;; + esac + # Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM: + # contains redundant information, the shorter form: + # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used. + echo "$machine-${os}${release}${abi-}" + exit ;; + *:Bitrig:*:*) + UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'` + echo "$UNAME_MACHINE_ARCH"-unknown-bitrig"$UNAME_RELEASE" + exit ;; + *:OpenBSD:*:*) + UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'` + echo "$UNAME_MACHINE_ARCH"-unknown-openbsd"$UNAME_RELEASE" + exit ;; + *:LibertyBSD:*:*) + UNAME_MACHINE_ARCH=`arch | sed 's/^.*BSD\.//'` + echo "$UNAME_MACHINE_ARCH"-unknown-libertybsd"$UNAME_RELEASE" + exit ;; + *:MidnightBSD:*:*) + echo "$UNAME_MACHINE"-unknown-midnightbsd"$UNAME_RELEASE" + exit ;; + *:ekkoBSD:*:*) + echo "$UNAME_MACHINE"-unknown-ekkobsd"$UNAME_RELEASE" + exit ;; + *:SolidBSD:*:*) + echo "$UNAME_MACHINE"-unknown-solidbsd"$UNAME_RELEASE" + exit ;; + macppc:MirBSD:*:*) + echo powerpc-unknown-mirbsd"$UNAME_RELEASE" + exit ;; + *:MirBSD:*:*) + echo "$UNAME_MACHINE"-unknown-mirbsd"$UNAME_RELEASE" + exit ;; + *:Sortix:*:*) + echo "$UNAME_MACHINE"-unknown-sortix + exit ;; + *:Redox:*:*) + echo "$UNAME_MACHINE"-unknown-redox + exit ;; + mips:OSF1:*.*) + echo mips-dec-osf1 + exit ;; + alpha:OSF1:*:*) + case $UNAME_RELEASE in + *4.0) + UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'` + ;; + *5.*) + UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'` + ;; + esac + # According to Compaq, /usr/sbin/psrinfo has been available on + # OSF/1 and Tru64 systems produced since 1995. I hope that + # covers most systems running today. This code pipes the CPU + # types through head -n 1, so we only detect the type of CPU 0. + ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^ The alpha \(.*\) processor.*$/\1/p' | head -n 1` + case "$ALPHA_CPU_TYPE" in + "EV4 (21064)") + UNAME_MACHINE=alpha ;; + "EV4.5 (21064)") + UNAME_MACHINE=alpha ;; + "LCA4 (21066/21068)") + UNAME_MACHINE=alpha ;; + "EV5 (21164)") + UNAME_MACHINE=alphaev5 ;; + "EV5.6 (21164A)") + UNAME_MACHINE=alphaev56 ;; + "EV5.6 (21164PC)") + UNAME_MACHINE=alphapca56 ;; + "EV5.7 (21164PC)") + UNAME_MACHINE=alphapca57 ;; + "EV6 (21264)") + UNAME_MACHINE=alphaev6 ;; + "EV6.7 (21264A)") + UNAME_MACHINE=alphaev67 ;; + "EV6.8CB (21264C)") + UNAME_MACHINE=alphaev68 ;; + "EV6.8AL (21264B)") + UNAME_MACHINE=alphaev68 ;; + "EV6.8CX (21264D)") + UNAME_MACHINE=alphaev68 ;; + "EV6.9A (21264/EV69A)") + UNAME_MACHINE=alphaev69 ;; + "EV7 (21364)") + UNAME_MACHINE=alphaev7 ;; + "EV7.9 (21364A)") + UNAME_MACHINE=alphaev79 ;; + esac + # A Pn.n version is a patched version. + # A Vn.n version is a released version. + # A Tn.n version is a released field test version. + # A Xn.n version is an unreleased experimental baselevel. + # 1.2 uses "1.2" for uname -r. + echo "$UNAME_MACHINE"-dec-osf"`echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`" + # Reset EXIT trap before exiting to avoid spurious non-zero exit code. + exitcode=$? + trap '' 0 + exit $exitcode ;; + Amiga*:UNIX_System_V:4.0:*) + echo m68k-unknown-sysv4 + exit ;; + *:[Aa]miga[Oo][Ss]:*:*) + echo "$UNAME_MACHINE"-unknown-amigaos + exit ;; + *:[Mm]orph[Oo][Ss]:*:*) + echo "$UNAME_MACHINE"-unknown-morphos + exit ;; + *:OS/390:*:*) + echo i370-ibm-openedition + exit ;; + *:z/VM:*:*) + echo s390-ibm-zvmoe + exit ;; + *:OS400:*:*) + echo powerpc-ibm-os400 + exit ;; + arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*) + echo arm-acorn-riscix"$UNAME_RELEASE" + exit ;; + arm*:riscos:*:*|arm*:RISCOS:*:*) + echo arm-unknown-riscos + exit ;; + SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*) + echo hppa1.1-hitachi-hiuxmpp + exit ;; + Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*) + # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE. + if test "`(/bin/universe) 2>/dev/null`" = att ; then + echo pyramid-pyramid-sysv3 + else + echo pyramid-pyramid-bsd + fi + exit ;; + NILE*:*:*:dcosx) + echo pyramid-pyramid-svr4 + exit ;; + DRS?6000:unix:4.0:6*) + echo sparc-icl-nx6 + exit ;; + DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*) + case `/usr/bin/uname -p` in + sparc) echo sparc-icl-nx7; exit ;; + esac ;; + s390x:SunOS:*:*) + echo "$UNAME_MACHINE"-ibm-solaris2"`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`" + exit ;; + sun4H:SunOS:5.*:*) + echo sparc-hal-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`" + exit ;; + sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*) + echo sparc-sun-solaris2"`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`" + exit ;; + i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*) + echo i386-pc-auroraux"$UNAME_RELEASE" + exit ;; + i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*) + set_cc_for_build + SUN_ARCH=i386 + # If there is a compiler, see if it is configured for 64-bit objects. + # Note that the Sun cc does not turn __LP64__ into 1 like gcc does. + # This test works for both compilers. + if [ "$CC_FOR_BUILD" != no_compiler_found ]; then + if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \ + (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_64BIT_ARCH >/dev/null + then + SUN_ARCH=x86_64 + fi + fi + echo "$SUN_ARCH"-pc-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`" + exit ;; + sun4*:SunOS:6*:*) + # According to config.sub, this is the proper way to canonicalize + # SunOS6. Hard to guess exactly what SunOS6 will be like, but + # it's likely to be more like Solaris than SunOS4. + echo sparc-sun-solaris3"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`" + exit ;; + sun4*:SunOS:*:*) + case "`/usr/bin/arch -k`" in + Series*|S4*) + UNAME_RELEASE=`uname -v` + ;; + esac + # Japanese Language versions have a version number like `4.1.3-JL'. + echo sparc-sun-sunos"`echo "$UNAME_RELEASE"|sed -e 's/-/_/'`" + exit ;; + sun3*:SunOS:*:*) + echo m68k-sun-sunos"$UNAME_RELEASE" + exit ;; + sun*:*:4.2BSD:*) + UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null` + test "x$UNAME_RELEASE" = x && UNAME_RELEASE=3 + case "`/bin/arch`" in + sun3) + echo m68k-sun-sunos"$UNAME_RELEASE" + ;; + sun4) + echo sparc-sun-sunos"$UNAME_RELEASE" + ;; + esac + exit ;; + aushp:SunOS:*:*) + echo sparc-auspex-sunos"$UNAME_RELEASE" + exit ;; + # The situation for MiNT is a little confusing. The machine name + # can be virtually everything (everything which is not + # "atarist" or "atariste" at least should have a processor + # > m68000). The system name ranges from "MiNT" over "FreeMiNT" + # to the lowercase version "mint" (or "freemint"). Finally + # the system name "TOS" denotes a system which is actually not + # MiNT. But MiNT is downward compatible to TOS, so this should + # be no problem. + atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) + echo m68k-atari-mint"$UNAME_RELEASE" + exit ;; + atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) + echo m68k-atari-mint"$UNAME_RELEASE" + exit ;; + *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) + echo m68k-atari-mint"$UNAME_RELEASE" + exit ;; + milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) + echo m68k-milan-mint"$UNAME_RELEASE" + exit ;; + hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) + echo m68k-hades-mint"$UNAME_RELEASE" + exit ;; + *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) + echo m68k-unknown-mint"$UNAME_RELEASE" + exit ;; + m68k:machten:*:*) + echo m68k-apple-machten"$UNAME_RELEASE" + exit ;; + powerpc:machten:*:*) + echo powerpc-apple-machten"$UNAME_RELEASE" + exit ;; + RISC*:Mach:*:*) + echo mips-dec-mach_bsd4.3 + exit ;; + RISC*:ULTRIX:*:*) + echo mips-dec-ultrix"$UNAME_RELEASE" + exit ;; + VAX*:ULTRIX*:*:*) + echo vax-dec-ultrix"$UNAME_RELEASE" + exit ;; + 2020:CLIX:*:* | 2430:CLIX:*:*) + echo clipper-intergraph-clix"$UNAME_RELEASE" + exit ;; + mips:*:*:UMIPS | mips:*:*:RISCos) + set_cc_for_build + sed 's/^ //' << EOF > "$dummy.c" +#ifdef __cplusplus +#include /* for printf() prototype */ + int main (int argc, char *argv[]) { +#else + int main (argc, argv) int argc; char *argv[]; { +#endif + #if defined (host_mips) && defined (MIPSEB) + #if defined (SYSTYPE_SYSV) + printf ("mips-mips-riscos%ssysv\\n", argv[1]); exit (0); + #endif + #if defined (SYSTYPE_SVR4) + printf ("mips-mips-riscos%ssvr4\\n", argv[1]); exit (0); + #endif + #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) + printf ("mips-mips-riscos%sbsd\\n", argv[1]); exit (0); + #endif + #endif + exit (-1); + } +EOF + $CC_FOR_BUILD -o "$dummy" "$dummy.c" && + dummyarg=`echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p'` && + SYSTEM_NAME=`"$dummy" "$dummyarg"` && + { echo "$SYSTEM_NAME"; exit; } + echo mips-mips-riscos"$UNAME_RELEASE" + exit ;; + Motorola:PowerMAX_OS:*:*) + echo powerpc-motorola-powermax + exit ;; + Motorola:*:4.3:PL8-*) + echo powerpc-harris-powermax + exit ;; + Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) + echo powerpc-harris-powermax + exit ;; + Night_Hawk:Power_UNIX:*:*) + echo powerpc-harris-powerunix + exit ;; + m88k:CX/UX:7*:*) + echo m88k-harris-cxux7 + exit ;; + m88k:*:4*:R4*) + echo m88k-motorola-sysv4 + exit ;; + m88k:*:3*:R3*) + echo m88k-motorola-sysv3 + exit ;; + AViiON:dgux:*:*) + # DG/UX returns AViiON for all architectures + UNAME_PROCESSOR=`/usr/bin/uname -p` + if [ "$UNAME_PROCESSOR" = mc88100 ] || [ "$UNAME_PROCESSOR" = mc88110 ] + then + if [ "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx ] || \ + [ "$TARGET_BINARY_INTERFACE"x = x ] + then + echo m88k-dg-dgux"$UNAME_RELEASE" + else + echo m88k-dg-dguxbcs"$UNAME_RELEASE" + fi + else + echo i586-dg-dgux"$UNAME_RELEASE" + fi + exit ;; + M88*:DolphinOS:*:*) # DolphinOS (SVR3) + echo m88k-dolphin-sysv3 + exit ;; + M88*:*:R3*:*) + # Delta 88k system running SVR3 + echo m88k-motorola-sysv3 + exit ;; + XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) + echo m88k-tektronix-sysv3 + exit ;; + Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) + echo m68k-tektronix-bsd + exit ;; + *:IRIX*:*:*) + echo mips-sgi-irix"`echo "$UNAME_RELEASE"|sed -e 's/-/_/g'`" + exit ;; + ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. + echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id + exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' + i*86:AIX:*:*) + echo i386-ibm-aix + exit ;; + ia64:AIX:*:*) + if [ -x /usr/bin/oslevel ] ; then + IBM_REV=`/usr/bin/oslevel` + else + IBM_REV="$UNAME_VERSION.$UNAME_RELEASE" + fi + echo "$UNAME_MACHINE"-ibm-aix"$IBM_REV" + exit ;; + *:AIX:2:3) + if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then + set_cc_for_build + sed 's/^ //' << EOF > "$dummy.c" + #include + + main() + { + if (!__power_pc()) + exit(1); + puts("powerpc-ibm-aix3.2.5"); + exit(0); + } +EOF + if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` + then + echo "$SYSTEM_NAME" + else + echo rs6000-ibm-aix3.2.5 + fi + elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then + echo rs6000-ibm-aix3.2.4 + else + echo rs6000-ibm-aix3.2 + fi + exit ;; + *:AIX:*:[4567]) + IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` + if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then + IBM_ARCH=rs6000 + else + IBM_ARCH=powerpc + fi + if [ -x /usr/bin/lslpp ] ; then + IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | + awk -F: '{ print $3 }' | sed s/[0-9]*$/0/` + else + IBM_REV="$UNAME_VERSION.$UNAME_RELEASE" + fi + echo "$IBM_ARCH"-ibm-aix"$IBM_REV" + exit ;; + *:AIX:*:*) + echo rs6000-ibm-aix + exit ;; + ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*) + echo romp-ibm-bsd4.4 + exit ;; + ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and + echo romp-ibm-bsd"$UNAME_RELEASE" # 4.3 with uname added to + exit ;; # report: romp-ibm BSD 4.3 + *:BOSX:*:*) + echo rs6000-bull-bosx + exit ;; + DPX/2?00:B.O.S.:*:*) + echo m68k-bull-sysv3 + exit ;; + 9000/[34]??:4.3bsd:1.*:*) + echo m68k-hp-bsd + exit ;; + hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) + echo m68k-hp-bsd4.4 + exit ;; + 9000/[34678]??:HP-UX:*:*) + HPUX_REV=`echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//'` + case "$UNAME_MACHINE" in + 9000/31?) HP_ARCH=m68000 ;; + 9000/[34]??) HP_ARCH=m68k ;; + 9000/[678][0-9][0-9]) + if [ -x /usr/bin/getconf ]; then + sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` + sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` + case "$sc_cpu_version" in + 523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0 + 528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1 + 532) # CPU_PA_RISC2_0 + case "$sc_kernel_bits" in + 32) HP_ARCH=hppa2.0n ;; + 64) HP_ARCH=hppa2.0w ;; + '') HP_ARCH=hppa2.0 ;; # HP-UX 10.20 + esac ;; + esac + fi + if [ "$HP_ARCH" = "" ]; then + set_cc_for_build + sed 's/^ //' << EOF > "$dummy.c" + + #define _HPUX_SOURCE + #include + #include + + int main () + { + #if defined(_SC_KERNEL_BITS) + long bits = sysconf(_SC_KERNEL_BITS); + #endif + long cpu = sysconf (_SC_CPU_VERSION); + + switch (cpu) + { + case CPU_PA_RISC1_0: puts ("hppa1.0"); break; + case CPU_PA_RISC1_1: puts ("hppa1.1"); break; + case CPU_PA_RISC2_0: + #if defined(_SC_KERNEL_BITS) + switch (bits) + { + case 64: puts ("hppa2.0w"); break; + case 32: puts ("hppa2.0n"); break; + default: puts ("hppa2.0"); break; + } break; + #else /* !defined(_SC_KERNEL_BITS) */ + puts ("hppa2.0"); break; + #endif + default: puts ("hppa1.0"); break; + } + exit (0); + } +EOF + (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null) && HP_ARCH=`"$dummy"` + test -z "$HP_ARCH" && HP_ARCH=hppa + fi ;; + esac + if [ "$HP_ARCH" = hppa2.0w ] + then + set_cc_for_build + + # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating + # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler + # generating 64-bit code. GNU and HP use different nomenclature: + # + # $ CC_FOR_BUILD=cc ./config.guess + # => hppa2.0w-hp-hpux11.23 + # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess + # => hppa64-hp-hpux11.23 + + if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | + grep -q __LP64__ + then + HP_ARCH=hppa2.0w + else + HP_ARCH=hppa64 + fi + fi + echo "$HP_ARCH"-hp-hpux"$HPUX_REV" + exit ;; + ia64:HP-UX:*:*) + HPUX_REV=`echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//'` + echo ia64-hp-hpux"$HPUX_REV" + exit ;; + 3050*:HI-UX:*:*) + set_cc_for_build + sed 's/^ //' << EOF > "$dummy.c" + #include + int + main () + { + long cpu = sysconf (_SC_CPU_VERSION); + /* The order matters, because CPU_IS_HP_MC68K erroneously returns + true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct + results, however. */ + if (CPU_IS_PA_RISC (cpu)) + { + switch (cpu) + { + case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; + case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; + case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; + default: puts ("hppa-hitachi-hiuxwe2"); break; + } + } + else if (CPU_IS_HP_MC68K (cpu)) + puts ("m68k-hitachi-hiuxwe2"); + else puts ("unknown-hitachi-hiuxwe2"); + exit (0); + } +EOF + $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` && + { echo "$SYSTEM_NAME"; exit; } + echo unknown-hitachi-hiuxwe2 + exit ;; + 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*) + echo hppa1.1-hp-bsd + exit ;; + 9000/8??:4.3bsd:*:*) + echo hppa1.0-hp-bsd + exit ;; + *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) + echo hppa1.0-hp-mpeix + exit ;; + hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*) + echo hppa1.1-hp-osf + exit ;; + hp8??:OSF1:*:*) + echo hppa1.0-hp-osf + exit ;; + i*86:OSF1:*:*) + if [ -x /usr/sbin/sysversion ] ; then + echo "$UNAME_MACHINE"-unknown-osf1mk + else + echo "$UNAME_MACHINE"-unknown-osf1 + fi + exit ;; + parisc*:Lites*:*:*) + echo hppa1.1-hp-lites + exit ;; + C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) + echo c1-convex-bsd + exit ;; + C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) + if getsysinfo -f scalar_acc + then echo c32-convex-bsd + else echo c2-convex-bsd + fi + exit ;; + C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) + echo c34-convex-bsd + exit ;; + C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) + echo c38-convex-bsd + exit ;; + C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) + echo c4-convex-bsd + exit ;; + CRAY*Y-MP:*:*:*) + echo ymp-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*[A-Z]90:*:*:*) + echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \ + | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ + -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ + -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*TS:*:*:*) + echo t90-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*T3E:*:*:*) + echo alphaev5-cray-unicosmk"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*SV1:*:*:*) + echo sv1-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + *:UNICOS/mp:*:*) + echo craynv-cray-unicosmp"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/' + exit ;; + F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) + FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz` + FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` + FUJITSU_REL=`echo "$UNAME_RELEASE" | sed -e 's/ /_/'` + echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" + exit ;; + 5000:UNIX_System_V:4.*:*) + FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` + FUJITSU_REL=`echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'` + echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" + exit ;; + i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) + echo "$UNAME_MACHINE"-pc-bsdi"$UNAME_RELEASE" + exit ;; + sparc*:BSD/OS:*:*) + echo sparc-unknown-bsdi"$UNAME_RELEASE" + exit ;; + *:BSD/OS:*:*) + echo "$UNAME_MACHINE"-unknown-bsdi"$UNAME_RELEASE" + exit ;; + arm:FreeBSD:*:*) + UNAME_PROCESSOR=`uname -p` + set_cc_for_build + if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ARM_PCS_VFP + then + echo "${UNAME_PROCESSOR}"-unknown-freebsd"`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`"-gnueabi + else + echo "${UNAME_PROCESSOR}"-unknown-freebsd"`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`"-gnueabihf + fi + exit ;; + *:FreeBSD:*:*) + UNAME_PROCESSOR=`/usr/bin/uname -p` + case "$UNAME_PROCESSOR" in + amd64) + UNAME_PROCESSOR=x86_64 ;; + i386) + UNAME_PROCESSOR=i586 ;; + esac + echo "$UNAME_PROCESSOR"-unknown-freebsd"`echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`" + exit ;; + i*:CYGWIN*:*) + echo "$UNAME_MACHINE"-pc-cygwin + exit ;; + *:MINGW64*:*) + echo "$UNAME_MACHINE"-pc-mingw64 + exit ;; + *:MINGW*:*) + echo "$UNAME_MACHINE"-pc-mingw32 + exit ;; + *:MSYS*:*) + echo "$UNAME_MACHINE"-pc-msys + exit ;; + i*:PW*:*) + echo "$UNAME_MACHINE"-pc-pw32 + exit ;; + *:Interix*:*) + case "$UNAME_MACHINE" in + x86) + echo i586-pc-interix"$UNAME_RELEASE" + exit ;; + authenticamd | genuineintel | EM64T) + echo x86_64-unknown-interix"$UNAME_RELEASE" + exit ;; + IA64) + echo ia64-unknown-interix"$UNAME_RELEASE" + exit ;; + esac ;; + i*:UWIN*:*) + echo "$UNAME_MACHINE"-pc-uwin + exit ;; + amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) + echo x86_64-pc-cygwin + exit ;; + prep*:SunOS:5.*:*) + echo powerpcle-unknown-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`" + exit ;; + *:GNU:*:*) + # the GNU system + echo "`echo "$UNAME_MACHINE"|sed -e 's,[-/].*$,,'`-unknown-$LIBC`echo "$UNAME_RELEASE"|sed -e 's,/.*$,,'`" + exit ;; + *:GNU/*:*:*) + # other systems with GNU libc and userland + echo "$UNAME_MACHINE-unknown-`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"``echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`-$LIBC" + exit ;; + *:Minix:*:*) + echo "$UNAME_MACHINE"-unknown-minix + exit ;; + aarch64:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + aarch64_be:Linux:*:*) + UNAME_MACHINE=aarch64_be + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + alpha:Linux:*:*) + case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in + EV5) UNAME_MACHINE=alphaev5 ;; + EV56) UNAME_MACHINE=alphaev56 ;; + PCA56) UNAME_MACHINE=alphapca56 ;; + PCA57) UNAME_MACHINE=alphapca56 ;; + EV6) UNAME_MACHINE=alphaev6 ;; + EV67) UNAME_MACHINE=alphaev67 ;; + EV68*) UNAME_MACHINE=alphaev68 ;; + esac + objdump --private-headers /bin/sh | grep -q ld.so.1 + if test "$?" = 0 ; then LIBC=gnulibc1 ; fi + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + arc:Linux:*:* | arceb:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + arm*:Linux:*:*) + set_cc_for_build + if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ARM_EABI__ + then + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + else + if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ARM_PCS_VFP + then + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"eabi + else + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"eabihf + fi + fi + exit ;; + avr32*:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + cris:Linux:*:*) + echo "$UNAME_MACHINE"-axis-linux-"$LIBC" + exit ;; + crisv32:Linux:*:*) + echo "$UNAME_MACHINE"-axis-linux-"$LIBC" + exit ;; + e2k:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + frv:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + hexagon:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + i*86:Linux:*:*) + echo "$UNAME_MACHINE"-pc-linux-"$LIBC" + exit ;; + ia64:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + k1om:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + m32r*:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + m68*:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + mips:Linux:*:* | mips64:Linux:*:*) + set_cc_for_build + IS_GLIBC=0 + test x"${LIBC}" = xgnu && IS_GLIBC=1 + sed 's/^ //' << EOF > "$dummy.c" + #undef CPU + #undef mips + #undef mipsel + #undef mips64 + #undef mips64el + #if ${IS_GLIBC} && defined(_ABI64) + LIBCABI=gnuabi64 + #else + #if ${IS_GLIBC} && defined(_ABIN32) + LIBCABI=gnuabin32 + #else + LIBCABI=${LIBC} + #endif + #endif + + #if ${IS_GLIBC} && defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6 + CPU=mipsisa64r6 + #else + #if ${IS_GLIBC} && !defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6 + CPU=mipsisa32r6 + #else + #if defined(__mips64) + CPU=mips64 + #else + CPU=mips + #endif + #endif + #endif + + #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) + MIPS_ENDIAN=el + #else + #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) + MIPS_ENDIAN= + #else + MIPS_ENDIAN= + #endif + #endif +EOF + eval "`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU\|^MIPS_ENDIAN\|^LIBCABI'`" + test "x$CPU" != x && { echo "$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; } + ;; + mips64el:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + openrisc*:Linux:*:*) + echo or1k-unknown-linux-"$LIBC" + exit ;; + or32:Linux:*:* | or1k*:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + padre:Linux:*:*) + echo sparc-unknown-linux-"$LIBC" + exit ;; + parisc64:Linux:*:* | hppa64:Linux:*:*) + echo hppa64-unknown-linux-"$LIBC" + exit ;; + parisc:Linux:*:* | hppa:Linux:*:*) + # Look for CPU level + case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in + PA7*) echo hppa1.1-unknown-linux-"$LIBC" ;; + PA8*) echo hppa2.0-unknown-linux-"$LIBC" ;; + *) echo hppa-unknown-linux-"$LIBC" ;; + esac + exit ;; + ppc64:Linux:*:*) + echo powerpc64-unknown-linux-"$LIBC" + exit ;; + ppc:Linux:*:*) + echo powerpc-unknown-linux-"$LIBC" + exit ;; + ppc64le:Linux:*:*) + echo powerpc64le-unknown-linux-"$LIBC" + exit ;; + ppcle:Linux:*:*) + echo powerpcle-unknown-linux-"$LIBC" + exit ;; + riscv32:Linux:*:* | riscv64:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + s390:Linux:*:* | s390x:Linux:*:*) + echo "$UNAME_MACHINE"-ibm-linux-"$LIBC" + exit ;; + sh64*:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + sh*:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + sparc:Linux:*:* | sparc64:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + tile*:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + vax:Linux:*:*) + echo "$UNAME_MACHINE"-dec-linux-"$LIBC" + exit ;; + x86_64:Linux:*:*) + echo "$UNAME_MACHINE"-pc-linux-"$LIBC" + exit ;; + xtensa*:Linux:*:*) + echo "$UNAME_MACHINE"-unknown-linux-"$LIBC" + exit ;; + i*86:DYNIX/ptx:4*:*) + # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. + # earlier versions are messed up and put the nodename in both + # sysname and nodename. + echo i386-sequent-sysv4 + exit ;; + i*86:UNIX_SV:4.2MP:2.*) + # Unixware is an offshoot of SVR4, but it has its own version + # number series starting with 2... + # I am not positive that other SVR4 systems won't match this, + # I just have to hope. -- rms. + # Use sysv4.2uw... so that sysv4* matches it. + echo "$UNAME_MACHINE"-pc-sysv4.2uw"$UNAME_VERSION" + exit ;; + i*86:OS/2:*:*) + # If we were able to find `uname', then EMX Unix compatibility + # is probably installed. + echo "$UNAME_MACHINE"-pc-os2-emx + exit ;; + i*86:XTS-300:*:STOP) + echo "$UNAME_MACHINE"-unknown-stop + exit ;; + i*86:atheos:*:*) + echo "$UNAME_MACHINE"-unknown-atheos + exit ;; + i*86:syllable:*:*) + echo "$UNAME_MACHINE"-pc-syllable + exit ;; + i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) + echo i386-unknown-lynxos"$UNAME_RELEASE" + exit ;; + i*86:*DOS:*:*) + echo "$UNAME_MACHINE"-pc-msdosdjgpp + exit ;; + i*86:*:4.*:*) + UNAME_REL=`echo "$UNAME_RELEASE" | sed 's/\/MP$//'` + if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then + echo "$UNAME_MACHINE"-univel-sysv"$UNAME_REL" + else + echo "$UNAME_MACHINE"-pc-sysv"$UNAME_REL" + fi + exit ;; + i*86:*:5:[678]*) + # UnixWare 7.x, OpenUNIX and OpenServer 6. + case `/bin/uname -X | grep "^Machine"` in + *486*) UNAME_MACHINE=i486 ;; + *Pentium) UNAME_MACHINE=i586 ;; + *Pent*|*Celeron) UNAME_MACHINE=i686 ;; + esac + echo "$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}" + exit ;; + i*86:*:3.2:*) + if test -f /usr/options/cb.name; then + UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then + UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` + (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 + (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ + && UNAME_MACHINE=i586 + (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ + && UNAME_MACHINE=i686 + (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ + && UNAME_MACHINE=i686 + echo "$UNAME_MACHINE"-pc-sco"$UNAME_REL" + else + echo "$UNAME_MACHINE"-pc-sysv32 + fi + exit ;; + pc:*:*:*) + # Left here for compatibility: + # uname -m prints for DJGPP always 'pc', but it prints nothing about + # the processor, so we play safe by assuming i586. + # Note: whatever this is, it MUST be the same as what config.sub + # prints for the "djgpp" host, or else GDB configure will decide that + # this is a cross-build. + echo i586-pc-msdosdjgpp + exit ;; + Intel:Mach:3*:*) + echo i386-pc-mach3 + exit ;; + paragon:*:*:*) + echo i860-intel-osf1 + exit ;; + i860:*:4.*:*) # i860-SVR4 + if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then + echo i860-stardent-sysv"$UNAME_RELEASE" # Stardent Vistra i860-SVR4 + else # Add other i860-SVR4 vendors below as they are discovered. + echo i860-unknown-sysv"$UNAME_RELEASE" # Unknown i860-SVR4 + fi + exit ;; + mini*:CTIX:SYS*5:*) + # "miniframe" + echo m68010-convergent-sysv + exit ;; + mc68k:UNIX:SYSTEM5:3.51m) + echo m68k-convergent-sysv + exit ;; + M680?0:D-NIX:5.3:*) + echo m68k-diab-dnix + exit ;; + M68*:*:R3V[5678]*:*) + test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; + 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) + OS_REL='' + test -r /etc/.relid \ + && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4.3"$OS_REL"; exit; } + /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ + && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;; + 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4; exit; } ;; + NCR*:*:4.2:* | MPRAS*:*:4.2:*) + OS_REL='.3' + test -r /etc/.relid \ + && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4.3"$OS_REL"; exit; } + /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ + && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } + /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ + && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;; + m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) + echo m68k-unknown-lynxos"$UNAME_RELEASE" + exit ;; + mc68030:UNIX_System_V:4.*:*) + echo m68k-atari-sysv4 + exit ;; + TSUNAMI:LynxOS:2.*:*) + echo sparc-unknown-lynxos"$UNAME_RELEASE" + exit ;; + rs6000:LynxOS:2.*:*) + echo rs6000-unknown-lynxos"$UNAME_RELEASE" + exit ;; + PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) + echo powerpc-unknown-lynxos"$UNAME_RELEASE" + exit ;; + SM[BE]S:UNIX_SV:*:*) + echo mips-dde-sysv"$UNAME_RELEASE" + exit ;; + RM*:ReliantUNIX-*:*:*) + echo mips-sni-sysv4 + exit ;; + RM*:SINIX-*:*:*) + echo mips-sni-sysv4 + exit ;; + *:SINIX-*:*:*) + if uname -p 2>/dev/null >/dev/null ; then + UNAME_MACHINE=`(uname -p) 2>/dev/null` + echo "$UNAME_MACHINE"-sni-sysv4 + else + echo ns32k-sni-sysv + fi + exit ;; + PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort + # says + echo i586-unisys-sysv4 + exit ;; + *:UNIX_System_V:4*:FTX*) + # From Gerald Hewes . + # How about differentiating between stratus architectures? -djm + echo hppa1.1-stratus-sysv4 + exit ;; + *:*:*:FTX*) + # From seanf@swdc.stratus.com. + echo i860-stratus-sysv4 + exit ;; + i*86:VOS:*:*) + # From Paul.Green@stratus.com. + echo "$UNAME_MACHINE"-stratus-vos + exit ;; + *:VOS:*:*) + # From Paul.Green@stratus.com. + echo hppa1.1-stratus-vos + exit ;; + mc68*:A/UX:*:*) + echo m68k-apple-aux"$UNAME_RELEASE" + exit ;; + news*:NEWS-OS:6*:*) + echo mips-sony-newsos6 + exit ;; + R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) + if [ -d /usr/nec ]; then + echo mips-nec-sysv"$UNAME_RELEASE" + else + echo mips-unknown-sysv"$UNAME_RELEASE" + fi + exit ;; + BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. + echo powerpc-be-beos + exit ;; + BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. + echo powerpc-apple-beos + exit ;; + BePC:BeOS:*:*) # BeOS running on Intel PC compatible. + echo i586-pc-beos + exit ;; + BePC:Haiku:*:*) # Haiku running on Intel PC compatible. + echo i586-pc-haiku + exit ;; + x86_64:Haiku:*:*) + echo x86_64-unknown-haiku + exit ;; + SX-4:SUPER-UX:*:*) + echo sx4-nec-superux"$UNAME_RELEASE" + exit ;; + SX-5:SUPER-UX:*:*) + echo sx5-nec-superux"$UNAME_RELEASE" + exit ;; + SX-6:SUPER-UX:*:*) + echo sx6-nec-superux"$UNAME_RELEASE" + exit ;; + SX-7:SUPER-UX:*:*) + echo sx7-nec-superux"$UNAME_RELEASE" + exit ;; + SX-8:SUPER-UX:*:*) + echo sx8-nec-superux"$UNAME_RELEASE" + exit ;; + SX-8R:SUPER-UX:*:*) + echo sx8r-nec-superux"$UNAME_RELEASE" + exit ;; + SX-ACE:SUPER-UX:*:*) + echo sxace-nec-superux"$UNAME_RELEASE" + exit ;; + Power*:Rhapsody:*:*) + echo powerpc-apple-rhapsody"$UNAME_RELEASE" + exit ;; + *:Rhapsody:*:*) + echo "$UNAME_MACHINE"-apple-rhapsody"$UNAME_RELEASE" + exit ;; + *:Darwin:*:*) + UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown + set_cc_for_build + if test "$UNAME_PROCESSOR" = unknown ; then + UNAME_PROCESSOR=powerpc + fi + if test "`echo "$UNAME_RELEASE" | sed -e 's/\..*//'`" -le 10 ; then + if [ "$CC_FOR_BUILD" != no_compiler_found ]; then + if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ + (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_64BIT_ARCH >/dev/null + then + case $UNAME_PROCESSOR in + i386) UNAME_PROCESSOR=x86_64 ;; + powerpc) UNAME_PROCESSOR=powerpc64 ;; + esac + fi + # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc + if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \ + (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_PPC >/dev/null + then + UNAME_PROCESSOR=powerpc + fi + fi + elif test "$UNAME_PROCESSOR" = i386 ; then + # Avoid executing cc on OS X 10.9, as it ships with a stub + # that puts up a graphical alert prompting to install + # developer tools. Any system running Mac OS X 10.7 or + # later (Darwin 11 and later) is required to have a 64-bit + # processor. This is not true of the ARM version of Darwin + # that Apple uses in portable devices. + UNAME_PROCESSOR=x86_64 + fi + echo "$UNAME_PROCESSOR"-apple-darwin"$UNAME_RELEASE" + exit ;; + *:procnto*:*:* | *:QNX:[0123456789]*:*) + UNAME_PROCESSOR=`uname -p` + if test "$UNAME_PROCESSOR" = x86; then + UNAME_PROCESSOR=i386 + UNAME_MACHINE=pc + fi + echo "$UNAME_PROCESSOR"-"$UNAME_MACHINE"-nto-qnx"$UNAME_RELEASE" + exit ;; + *:QNX:*:4*) + echo i386-pc-qnx + exit ;; + NEO-*:NONSTOP_KERNEL:*:*) + echo neo-tandem-nsk"$UNAME_RELEASE" + exit ;; + NSE-*:NONSTOP_KERNEL:*:*) + echo nse-tandem-nsk"$UNAME_RELEASE" + exit ;; + NSR-*:NONSTOP_KERNEL:*:*) + echo nsr-tandem-nsk"$UNAME_RELEASE" + exit ;; + NSV-*:NONSTOP_KERNEL:*:*) + echo nsv-tandem-nsk"$UNAME_RELEASE" + exit ;; + NSX-*:NONSTOP_KERNEL:*:*) + echo nsx-tandem-nsk"$UNAME_RELEASE" + exit ;; + *:NonStop-UX:*:*) + echo mips-compaq-nonstopux + exit ;; + BS2000:POSIX*:*:*) + echo bs2000-siemens-sysv + exit ;; + DS/*:UNIX_System_V:*:*) + echo "$UNAME_MACHINE"-"$UNAME_SYSTEM"-"$UNAME_RELEASE" + exit ;; + *:Plan9:*:*) + # "uname -m" is not consistent, so use $cputype instead. 386 + # is converted to i386 for consistency with other x86 + # operating systems. + # shellcheck disable=SC2154 + if test "$cputype" = 386; then + UNAME_MACHINE=i386 + else + UNAME_MACHINE="$cputype" + fi + echo "$UNAME_MACHINE"-unknown-plan9 + exit ;; + *:TOPS-10:*:*) + echo pdp10-unknown-tops10 + exit ;; + *:TENEX:*:*) + echo pdp10-unknown-tenex + exit ;; + KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) + echo pdp10-dec-tops20 + exit ;; + XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) + echo pdp10-xkl-tops20 + exit ;; + *:TOPS-20:*:*) + echo pdp10-unknown-tops20 + exit ;; + *:ITS:*:*) + echo pdp10-unknown-its + exit ;; + SEI:*:*:SEIUX) + echo mips-sei-seiux"$UNAME_RELEASE" + exit ;; + *:DragonFly:*:*) + echo "$UNAME_MACHINE"-unknown-dragonfly"`echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`" + exit ;; + *:*VMS:*:*) + UNAME_MACHINE=`(uname -p) 2>/dev/null` + case "$UNAME_MACHINE" in + A*) echo alpha-dec-vms ; exit ;; + I*) echo ia64-dec-vms ; exit ;; + V*) echo vax-dec-vms ; exit ;; + esac ;; + *:XENIX:*:SysV) + echo i386-pc-xenix + exit ;; + i*86:skyos:*:*) + echo "$UNAME_MACHINE"-pc-skyos"`echo "$UNAME_RELEASE" | sed -e 's/ .*$//'`" + exit ;; + i*86:rdos:*:*) + echo "$UNAME_MACHINE"-pc-rdos + exit ;; + i*86:AROS:*:*) + echo "$UNAME_MACHINE"-pc-aros + exit ;; + x86_64:VMkernel:*:*) + echo "$UNAME_MACHINE"-unknown-esx + exit ;; + amd64:Isilon\ OneFS:*:*) + echo x86_64-unknown-onefs + exit ;; + *:Unleashed:*:*) + echo "$UNAME_MACHINE"-unknown-unleashed"$UNAME_RELEASE" + exit ;; +esac + +# No uname command or uname output not recognized. +set_cc_for_build +cat > "$dummy.c" < +#include +#endif +#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__) +#if defined (vax) || defined (__vax) || defined (__vax__) || defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__) +#include +#if defined(_SIZE_T_) || defined(SIGLOST) +#include +#endif +#endif +#endif +main () +{ +#if defined (sony) +#if defined (MIPSEB) + /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed, + I don't know.... */ + printf ("mips-sony-bsd\n"); exit (0); +#else +#include + printf ("m68k-sony-newsos%s\n", +#ifdef NEWSOS4 + "4" +#else + "" +#endif + ); exit (0); +#endif +#endif + +#if defined (NeXT) +#if !defined (__ARCHITECTURE__) +#define __ARCHITECTURE__ "m68k" +#endif + int version; + version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`; + if (version < 4) + printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version); + else + printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version); + exit (0); +#endif + +#if defined (MULTIMAX) || defined (n16) +#if defined (UMAXV) + printf ("ns32k-encore-sysv\n"); exit (0); +#else +#if defined (CMU) + printf ("ns32k-encore-mach\n"); exit (0); +#else + printf ("ns32k-encore-bsd\n"); exit (0); +#endif +#endif +#endif + +#if defined (__386BSD__) + printf ("i386-pc-bsd\n"); exit (0); +#endif + +#if defined (sequent) +#if defined (i386) + printf ("i386-sequent-dynix\n"); exit (0); +#endif +#if defined (ns32000) + printf ("ns32k-sequent-dynix\n"); exit (0); +#endif +#endif + +#if defined (_SEQUENT_) + struct utsname un; + + uname(&un); + if (strncmp(un.version, "V2", 2) == 0) { + printf ("i386-sequent-ptx2\n"); exit (0); + } + if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */ + printf ("i386-sequent-ptx1\n"); exit (0); + } + printf ("i386-sequent-ptx\n"); exit (0); +#endif + +#if defined (vax) +#if !defined (ultrix) +#include +#if defined (BSD) +#if BSD == 43 + printf ("vax-dec-bsd4.3\n"); exit (0); +#else +#if BSD == 199006 + printf ("vax-dec-bsd4.3reno\n"); exit (0); +#else + printf ("vax-dec-bsd\n"); exit (0); +#endif +#endif +#else + printf ("vax-dec-bsd\n"); exit (0); +#endif +#else +#if defined(_SIZE_T_) || defined(SIGLOST) + struct utsname un; + uname (&un); + printf ("vax-dec-ultrix%s\n", un.release); exit (0); +#else + printf ("vax-dec-ultrix\n"); exit (0); +#endif +#endif +#endif +#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__) +#if defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__) +#if defined(_SIZE_T_) || defined(SIGLOST) + struct utsname *un; + uname (&un); + printf ("mips-dec-ultrix%s\n", un.release); exit (0); +#else + printf ("mips-dec-ultrix\n"); exit (0); +#endif +#endif +#endif + +#if defined (alliant) && defined (i860) + printf ("i860-alliant-bsd\n"); exit (0); +#endif + + exit (1); +} +EOF + +$CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=`$dummy` && + { echo "$SYSTEM_NAME"; exit; } + +# Apollos put the system type in the environment. +test -d /usr/apollo && { echo "$ISP-apollo-$SYSTYPE"; exit; } + +echo "$0: unable to guess system type" >&2 + +case "$UNAME_MACHINE:$UNAME_SYSTEM" in + mips:Linux | mips64:Linux) + # If we got here on MIPS GNU/Linux, output extra information. + cat >&2 <&2 </dev/null || echo unknown` +uname -r = `(uname -r) 2>/dev/null || echo unknown` +uname -s = `(uname -s) 2>/dev/null || echo unknown` +uname -v = `(uname -v) 2>/dev/null || echo unknown` + +/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` +/bin/uname -X = `(/bin/uname -X) 2>/dev/null` + +hostinfo = `(hostinfo) 2>/dev/null` +/bin/universe = `(/bin/universe) 2>/dev/null` +/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` +/bin/arch = `(/bin/arch) 2>/dev/null` +/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` +/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` + +UNAME_MACHINE = "$UNAME_MACHINE" +UNAME_RELEASE = "$UNAME_RELEASE" +UNAME_SYSTEM = "$UNAME_SYSTEM" +UNAME_VERSION = "$UNAME_VERSION" +EOF + +exit 1 + +# Local variables: +# eval: (add-hook 'before-save-hook 'time-stamp) +# time-stamp-start: "timestamp='" +# time-stamp-format: "%:y-%02m-%02d" +# time-stamp-end: "'" +# End: diff --git a/config.sub b/config.sub new file mode 100644 index 0000000000..f53af5a2da --- /dev/null +++ b/config.sub @@ -0,0 +1,1798 @@ +#! /bin/sh +# Configuration validation subroutine script. +# Copyright 1992-2019 Free Software Foundation, Inc. + +timestamp='2019-01-05' + +# This file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, see . +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that +# program. This Exception is an additional permission under section 7 +# of the GNU General Public License, version 3 ("GPLv3"). + + +# Please send patches to . +# +# Configuration subroutine to validate and canonicalize a configuration type. +# Supply the specified configuration type as an argument. +# If it is invalid, we print an error message on stderr and exit with code 1. +# Otherwise, we print the canonical config type on stdout and succeed. + +# You can get the latest version of this script from: +# https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub + +# This file is supposed to be the same for all GNU packages +# and recognize all the CPU types, system types and aliases +# that are meaningful with *any* GNU software. +# Each package is responsible for reporting which valid configurations +# it does not support. The user should be able to distinguish +# a failure to support a valid configuration from a meaningless +# configuration. + +# The goal of this file is to map all the various variations of a given +# machine specification into a single specification in the form: +# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM +# or in some cases, the newer four-part form: +# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM +# It is wrong to echo any other type of specification. + +me=`echo "$0" | sed -e 's,.*/,,'` + +usage="\ +Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS + +Canonicalize a configuration name. + +Options: + -h, --help print this help, then exit + -t, --time-stamp print date of last modification, then exit + -v, --version print version number, then exit + +Report bugs and patches to ." + +version="\ +GNU config.sub ($timestamp) + +Copyright 1992-2019 Free Software Foundation, Inc. + +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." + +help=" +Try \`$me --help' for more information." + +# Parse command line +while test $# -gt 0 ; do + case $1 in + --time-stamp | --time* | -t ) + echo "$timestamp" ; exit ;; + --version | -v ) + echo "$version" ; exit ;; + --help | --h* | -h ) + echo "$usage"; exit ;; + -- ) # Stop option processing + shift; break ;; + - ) # Use stdin as input. + break ;; + -* ) + echo "$me: invalid option $1$help" >&2 + exit 1 ;; + + *local*) + # First pass through any local machine types. + echo "$1" + exit ;; + + * ) + break ;; + esac +done + +case $# in + 0) echo "$me: missing argument$help" >&2 + exit 1;; + 1) ;; + *) echo "$me: too many arguments$help" >&2 + exit 1;; +esac + +# Split fields of configuration type +# shellcheck disable=SC2162 +IFS="-" read field1 field2 field3 field4 <&2 + exit 1 + ;; + *-*-*-*) + basic_machine=$field1-$field2 + os=$field3-$field4 + ;; + *-*-*) + # Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two + # parts + maybe_os=$field2-$field3 + case $maybe_os in + nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc \ + | linux-newlib* | linux-musl* | linux-uclibc* | uclinux-uclibc* \ + | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \ + | netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \ + | storm-chaos* | os2-emx* | rtmk-nova*) + basic_machine=$field1 + os=$maybe_os + ;; + android-linux) + basic_machine=$field1-unknown + os=linux-android + ;; + *) + basic_machine=$field1-$field2 + os=$field3 + ;; + esac + ;; + *-*) + # A lone config we happen to match not fitting any pattern + case $field1-$field2 in + decstation-3100) + basic_machine=mips-dec + os= + ;; + *-*) + # Second component is usually, but not always the OS + case $field2 in + # Prevent following clause from handling this valid os + sun*os*) + basic_machine=$field1 + os=$field2 + ;; + # Manufacturers + dec* | mips* | sequent* | encore* | pc533* | sgi* | sony* \ + | att* | 7300* | 3300* | delta* | motorola* | sun[234]* \ + | unicom* | ibm* | next | hp | isi* | apollo | altos* \ + | convergent* | ncr* | news | 32* | 3600* | 3100* \ + | hitachi* | c[123]* | convex* | sun | crds | omron* | dg \ + | ultra | tti* | harris | dolphin | highlevel | gould \ + | cbm | ns | masscomp | apple | axis | knuth | cray \ + | microblaze* | sim | cisco \ + | oki | wec | wrs | winbond) + basic_machine=$field1-$field2 + os= + ;; + *) + basic_machine=$field1 + os=$field2 + ;; + esac + ;; + esac + ;; + *) + # Convert single-component short-hands not valid as part of + # multi-component configurations. + case $field1 in + 386bsd) + basic_machine=i386-pc + os=bsd + ;; + a29khif) + basic_machine=a29k-amd + os=udi + ;; + adobe68k) + basic_machine=m68010-adobe + os=scout + ;; + alliant) + basic_machine=fx80-alliant + os= + ;; + altos | altos3068) + basic_machine=m68k-altos + os= + ;; + am29k) + basic_machine=a29k-none + os=bsd + ;; + amdahl) + basic_machine=580-amdahl + os=sysv + ;; + amiga) + basic_machine=m68k-unknown + os= + ;; + amigaos | amigados) + basic_machine=m68k-unknown + os=amigaos + ;; + amigaunix | amix) + basic_machine=m68k-unknown + os=sysv4 + ;; + apollo68) + basic_machine=m68k-apollo + os=sysv + ;; + apollo68bsd) + basic_machine=m68k-apollo + os=bsd + ;; + aros) + basic_machine=i386-pc + os=aros + ;; + aux) + basic_machine=m68k-apple + os=aux + ;; + balance) + basic_machine=ns32k-sequent + os=dynix + ;; + blackfin) + basic_machine=bfin-unknown + os=linux + ;; + cegcc) + basic_machine=arm-unknown + os=cegcc + ;; + convex-c1) + basic_machine=c1-convex + os=bsd + ;; + convex-c2) + basic_machine=c2-convex + os=bsd + ;; + convex-c32) + basic_machine=c32-convex + os=bsd + ;; + convex-c34) + basic_machine=c34-convex + os=bsd + ;; + convex-c38) + basic_machine=c38-convex + os=bsd + ;; + cray) + basic_machine=j90-cray + os=unicos + ;; + crds | unos) + basic_machine=m68k-crds + os= + ;; + da30) + basic_machine=m68k-da30 + os= + ;; + decstation | pmax | pmin | dec3100 | decstatn) + basic_machine=mips-dec + os= + ;; + delta88) + basic_machine=m88k-motorola + os=sysv3 + ;; + dicos) + basic_machine=i686-pc + os=dicos + ;; + djgpp) + basic_machine=i586-pc + os=msdosdjgpp + ;; + ebmon29k) + basic_machine=a29k-amd + os=ebmon + ;; + es1800 | OSE68k | ose68k | ose | OSE) + basic_machine=m68k-ericsson + os=ose + ;; + gmicro) + basic_machine=tron-gmicro + os=sysv + ;; + go32) + basic_machine=i386-pc + os=go32 + ;; + h8300hms) + basic_machine=h8300-hitachi + os=hms + ;; + h8300xray) + basic_machine=h8300-hitachi + os=xray + ;; + h8500hms) + basic_machine=h8500-hitachi + os=hms + ;; + harris) + basic_machine=m88k-harris + os=sysv3 + ;; + hp300) + basic_machine=m68k-hp + ;; + hp300bsd) + basic_machine=m68k-hp + os=bsd + ;; + hp300hpux) + basic_machine=m68k-hp + os=hpux + ;; + hppaosf) + basic_machine=hppa1.1-hp + os=osf + ;; + hppro) + basic_machine=hppa1.1-hp + os=proelf + ;; + i386mach) + basic_machine=i386-mach + os=mach + ;; + vsta) + basic_machine=i386-pc + os=vsta + ;; + isi68 | isi) + basic_machine=m68k-isi + os=sysv + ;; + m68knommu) + basic_machine=m68k-unknown + os=linux + ;; + magnum | m3230) + basic_machine=mips-mips + os=sysv + ;; + merlin) + basic_machine=ns32k-utek + os=sysv + ;; + mingw64) + basic_machine=x86_64-pc + os=mingw64 + ;; + mingw32) + basic_machine=i686-pc + os=mingw32 + ;; + mingw32ce) + basic_machine=arm-unknown + os=mingw32ce + ;; + monitor) + basic_machine=m68k-rom68k + os=coff + ;; + morphos) + basic_machine=powerpc-unknown + os=morphos + ;; + moxiebox) + basic_machine=moxie-unknown + os=moxiebox + ;; + msdos) + basic_machine=i386-pc + os=msdos + ;; + msys) + basic_machine=i686-pc + os=msys + ;; + mvs) + basic_machine=i370-ibm + os=mvs + ;; + nacl) + basic_machine=le32-unknown + os=nacl + ;; + ncr3000) + basic_machine=i486-ncr + os=sysv4 + ;; + netbsd386) + basic_machine=i386-pc + os=netbsd + ;; + netwinder) + basic_machine=armv4l-rebel + os=linux + ;; + news | news700 | news800 | news900) + basic_machine=m68k-sony + os=newsos + ;; + news1000) + basic_machine=m68030-sony + os=newsos + ;; + necv70) + basic_machine=v70-nec + os=sysv + ;; + nh3000) + basic_machine=m68k-harris + os=cxux + ;; + nh[45]000) + basic_machine=m88k-harris + os=cxux + ;; + nindy960) + basic_machine=i960-intel + os=nindy + ;; + mon960) + basic_machine=i960-intel + os=mon960 + ;; + nonstopux) + basic_machine=mips-compaq + os=nonstopux + ;; + os400) + basic_machine=powerpc-ibm + os=os400 + ;; + OSE68000 | ose68000) + basic_machine=m68000-ericsson + os=ose + ;; + os68k) + basic_machine=m68k-none + os=os68k + ;; + paragon) + basic_machine=i860-intel + os=osf + ;; + parisc) + basic_machine=hppa-unknown + os=linux + ;; + pw32) + basic_machine=i586-unknown + os=pw32 + ;; + rdos | rdos64) + basic_machine=x86_64-pc + os=rdos + ;; + rdos32) + basic_machine=i386-pc + os=rdos + ;; + rom68k) + basic_machine=m68k-rom68k + os=coff + ;; + sa29200) + basic_machine=a29k-amd + os=udi + ;; + sei) + basic_machine=mips-sei + os=seiux + ;; + sequent) + basic_machine=i386-sequent + os= + ;; + sps7) + basic_machine=m68k-bull + os=sysv2 + ;; + st2000) + basic_machine=m68k-tandem + os= + ;; + stratus) + basic_machine=i860-stratus + os=sysv4 + ;; + sun2) + basic_machine=m68000-sun + os= + ;; + sun2os3) + basic_machine=m68000-sun + os=sunos3 + ;; + sun2os4) + basic_machine=m68000-sun + os=sunos4 + ;; + sun3) + basic_machine=m68k-sun + os= + ;; + sun3os3) + basic_machine=m68k-sun + os=sunos3 + ;; + sun3os4) + basic_machine=m68k-sun + os=sunos4 + ;; + sun4) + basic_machine=sparc-sun + os= + ;; + sun4os3) + basic_machine=sparc-sun + os=sunos3 + ;; + sun4os4) + basic_machine=sparc-sun + os=sunos4 + ;; + sun4sol2) + basic_machine=sparc-sun + os=solaris2 + ;; + sun386 | sun386i | roadrunner) + basic_machine=i386-sun + os= + ;; + sv1) + basic_machine=sv1-cray + os=unicos + ;; + symmetry) + basic_machine=i386-sequent + os=dynix + ;; + t3e) + basic_machine=alphaev5-cray + os=unicos + ;; + t90) + basic_machine=t90-cray + os=unicos + ;; + toad1) + basic_machine=pdp10-xkl + os=tops20 + ;; + tpf) + basic_machine=s390x-ibm + os=tpf + ;; + udi29k) + basic_machine=a29k-amd + os=udi + ;; + ultra3) + basic_machine=a29k-nyu + os=sym1 + ;; + v810 | necv810) + basic_machine=v810-nec + os=none + ;; + vaxv) + basic_machine=vax-dec + os=sysv + ;; + vms) + basic_machine=vax-dec + os=vms + ;; + vxworks960) + basic_machine=i960-wrs + os=vxworks + ;; + vxworks68) + basic_machine=m68k-wrs + os=vxworks + ;; + vxworks29k) + basic_machine=a29k-wrs + os=vxworks + ;; + xbox) + basic_machine=i686-pc + os=mingw32 + ;; + ymp) + basic_machine=ymp-cray + os=unicos + ;; + *) + basic_machine=$1 + os= + ;; + esac + ;; +esac + +# Decode 1-component or ad-hoc basic machines +case $basic_machine in + # Here we handle the default manufacturer of certain CPU types. It is in + # some cases the only manufacturer, in others, it is the most popular. + w89k) + cpu=hppa1.1 + vendor=winbond + ;; + op50n) + cpu=hppa1.1 + vendor=oki + ;; + op60c) + cpu=hppa1.1 + vendor=oki + ;; + ibm*) + cpu=i370 + vendor=ibm + ;; + orion105) + cpu=clipper + vendor=highlevel + ;; + mac | mpw | mac-mpw) + cpu=m68k + vendor=apple + ;; + pmac | pmac-mpw) + cpu=powerpc + vendor=apple + ;; + + # Recognize the various machine names and aliases which stand + # for a CPU type and a company and sometimes even an OS. + 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc) + cpu=m68000 + vendor=att + ;; + 3b*) + cpu=we32k + vendor=att + ;; + bluegene*) + cpu=powerpc + vendor=ibm + os=cnk + ;; + decsystem10* | dec10*) + cpu=pdp10 + vendor=dec + os=tops10 + ;; + decsystem20* | dec20*) + cpu=pdp10 + vendor=dec + os=tops20 + ;; + delta | 3300 | motorola-3300 | motorola-delta \ + | 3300-motorola | delta-motorola) + cpu=m68k + vendor=motorola + ;; + dpx2*) + cpu=m68k + vendor=bull + os=sysv3 + ;; + encore | umax | mmax) + cpu=ns32k + vendor=encore + ;; + elxsi) + cpu=elxsi + vendor=elxsi + os=${os:-bsd} + ;; + fx2800) + cpu=i860 + vendor=alliant + ;; + genix) + cpu=ns32k + vendor=ns + ;; + h3050r* | hiux*) + cpu=hppa1.1 + vendor=hitachi + os=hiuxwe2 + ;; + hp3k9[0-9][0-9] | hp9[0-9][0-9]) + cpu=hppa1.0 + vendor=hp + ;; + hp9k2[0-9][0-9] | hp9k31[0-9]) + cpu=m68000 + vendor=hp + ;; + hp9k3[2-9][0-9]) + cpu=m68k + vendor=hp + ;; + hp9k6[0-9][0-9] | hp6[0-9][0-9]) + cpu=hppa1.0 + vendor=hp + ;; + hp9k7[0-79][0-9] | hp7[0-79][0-9]) + cpu=hppa1.1 + vendor=hp + ;; + hp9k78[0-9] | hp78[0-9]) + # FIXME: really hppa2.0-hp + cpu=hppa1.1 + vendor=hp + ;; + hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893) + # FIXME: really hppa2.0-hp + cpu=hppa1.1 + vendor=hp + ;; + hp9k8[0-9][13679] | hp8[0-9][13679]) + cpu=hppa1.1 + vendor=hp + ;; + hp9k8[0-9][0-9] | hp8[0-9][0-9]) + cpu=hppa1.0 + vendor=hp + ;; + i*86v32) + cpu=`echo "$1" | sed -e 's/86.*/86/'` + vendor=pc + os=sysv32 + ;; + i*86v4*) + cpu=`echo "$1" | sed -e 's/86.*/86/'` + vendor=pc + os=sysv4 + ;; + i*86v) + cpu=`echo "$1" | sed -e 's/86.*/86/'` + vendor=pc + os=sysv + ;; + i*86sol2) + cpu=`echo "$1" | sed -e 's/86.*/86/'` + vendor=pc + os=solaris2 + ;; + j90 | j90-cray) + cpu=j90 + vendor=cray + os=${os:-unicos} + ;; + iris | iris4d) + cpu=mips + vendor=sgi + case $os in + irix*) + ;; + *) + os=irix4 + ;; + esac + ;; + miniframe) + cpu=m68000 + vendor=convergent + ;; + *mint | mint[0-9]* | *MiNT | *MiNT[0-9]*) + cpu=m68k + vendor=atari + os=mint + ;; + news-3600 | risc-news) + cpu=mips + vendor=sony + os=newsos + ;; + next | m*-next) + cpu=m68k + vendor=next + case $os in + openstep*) + ;; + nextstep*) + ;; + ns2*) + os=nextstep2 + ;; + *) + os=nextstep3 + ;; + esac + ;; + np1) + cpu=np1 + vendor=gould + ;; + op50n-* | op60c-*) + cpu=hppa1.1 + vendor=oki + os=proelf + ;; + pa-hitachi) + cpu=hppa1.1 + vendor=hitachi + os=hiuxwe2 + ;; + pbd) + cpu=sparc + vendor=tti + ;; + pbb) + cpu=m68k + vendor=tti + ;; + pc532) + cpu=ns32k + vendor=pc532 + ;; + pn) + cpu=pn + vendor=gould + ;; + power) + cpu=power + vendor=ibm + ;; + ps2) + cpu=i386 + vendor=ibm + ;; + rm[46]00) + cpu=mips + vendor=siemens + ;; + rtpc | rtpc-*) + cpu=romp + vendor=ibm + ;; + sde) + cpu=mipsisa32 + vendor=sde + os=${os:-elf} + ;; + simso-wrs) + cpu=sparclite + vendor=wrs + os=vxworks + ;; + tower | tower-32) + cpu=m68k + vendor=ncr + ;; + vpp*|vx|vx-*) + cpu=f301 + vendor=fujitsu + ;; + w65) + cpu=w65 + vendor=wdc + ;; + w89k-*) + cpu=hppa1.1 + vendor=winbond + os=proelf + ;; + none) + cpu=none + vendor=none + ;; + leon|leon[3-9]) + cpu=sparc + vendor=$basic_machine + ;; + leon-*|leon[3-9]-*) + cpu=sparc + vendor=`echo "$basic_machine" | sed 's/-.*//'` + ;; + + *-*) + # shellcheck disable=SC2162 + IFS="-" read cpu vendor <&2 + exit 1 + ;; + esac + ;; +esac + +# Here we canonicalize certain aliases for manufacturers. +case $vendor in + digital*) + vendor=dec + ;; + commodore*) + vendor=cbm + ;; + *) + ;; +esac + +# Decode manufacturer-specific aliases for certain operating systems. + +if [ x$os != x ] +then +case $os in + # First match some system type aliases that might get confused + # with valid system types. + # solaris* is a basic system type, with this one exception. + auroraux) + os=auroraux + ;; + bluegene*) + os=cnk + ;; + solaris1 | solaris1.*) + os=`echo $os | sed -e 's|solaris1|sunos4|'` + ;; + solaris) + os=solaris2 + ;; + unixware*) + os=sysv4.2uw + ;; + gnu/linux*) + os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'` + ;; + # es1800 is here to avoid being matched by es* (a different OS) + es1800*) + os=ose + ;; + # Some version numbers need modification + chorusos*) + os=chorusos + ;; + isc) + os=isc2.2 + ;; + sco6) + os=sco5v6 + ;; + sco5) + os=sco3.2v5 + ;; + sco4) + os=sco3.2v4 + ;; + sco3.2.[4-9]*) + os=`echo $os | sed -e 's/sco3.2./sco3.2v/'` + ;; + sco3.2v[4-9]* | sco5v6*) + # Don't forget version if it is 3.2v4 or newer. + ;; + scout) + # Don't match below + ;; + sco*) + os=sco3.2v2 + ;; + psos*) + os=psos + ;; + # Now accept the basic system types. + # The portable systems comes first. + # Each alternative MUST end in a * to match a version number. + # sysv* is not here because it comes later, after sysvr4. + gnu* | bsd* | mach* | minix* | genix* | ultrix* | irix* \ + | *vms* | esix* | aix* | cnk* | sunos | sunos[34]*\ + | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \ + | sym* | kopensolaris* | plan9* \ + | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \ + | aos* | aros* | cloudabi* | sortix* \ + | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \ + | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \ + | knetbsd* | mirbsd* | netbsd* \ + | bitrig* | openbsd* | solidbsd* | libertybsd* \ + | ekkobsd* | kfreebsd* | freebsd* | riscix* | lynxos* \ + | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \ + | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \ + | udi* | eabi* | lites* | ieee* | go32* | aux* | hcos* \ + | chorusrdb* | cegcc* | glidix* \ + | cygwin* | msys* | pe* | moss* | proelf* | rtems* \ + | midipix* | mingw32* | mingw64* | linux-gnu* | linux-android* \ + | linux-newlib* | linux-musl* | linux-uclibc* \ + | uxpv* | beos* | mpeix* | udk* | moxiebox* \ + | interix* | uwin* | mks* | rhapsody* | darwin* \ + | openstep* | oskit* | conix* | pw32* | nonstopux* \ + | storm-chaos* | tops10* | tenex* | tops20* | its* \ + | os2* | vos* | palmos* | uclinux* | nucleus* \ + | morphos* | superux* | rtmk* | windiss* \ + | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \ + | skyos* | haiku* | rdos* | toppers* | drops* | es* \ + | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \ + | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi*) + # Remember, each alternative MUST END IN *, to match a version number. + ;; + qnx*) + case $cpu in + x86 | i*86) + ;; + *) + os=nto-$os + ;; + esac + ;; + hiux*) + os=hiuxwe2 + ;; + nto-qnx*) + ;; + nto*) + os=`echo $os | sed -e 's|nto|nto-qnx|'` + ;; + sim | xray | os68k* | v88r* \ + | windows* | osx | abug | netware* | os9* \ + | macos* | mpw* | magic* | mmixware* | mon960* | lnews*) + ;; + linux-dietlibc) + os=linux-dietlibc + ;; + linux*) + os=`echo $os | sed -e 's|linux|linux-gnu|'` + ;; + lynx*178) + os=lynxos178 + ;; + lynx*5) + os=lynxos5 + ;; + lynx*) + os=lynxos + ;; + mac*) + os=`echo "$os" | sed -e 's|mac|macos|'` + ;; + opened*) + os=openedition + ;; + os400*) + os=os400 + ;; + sunos5*) + os=`echo "$os" | sed -e 's|sunos5|solaris2|'` + ;; + sunos6*) + os=`echo "$os" | sed -e 's|sunos6|solaris3|'` + ;; + wince*) + os=wince + ;; + utek*) + os=bsd + ;; + dynix*) + os=bsd + ;; + acis*) + os=aos + ;; + atheos*) + os=atheos + ;; + syllable*) + os=syllable + ;; + 386bsd) + os=bsd + ;; + ctix* | uts*) + os=sysv + ;; + nova*) + os=rtmk-nova + ;; + ns2) + os=nextstep2 + ;; + nsk*) + os=nsk + ;; + # Preserve the version number of sinix5. + sinix5.*) + os=`echo $os | sed -e 's|sinix|sysv|'` + ;; + sinix*) + os=sysv4 + ;; + tpf*) + os=tpf + ;; + triton*) + os=sysv3 + ;; + oss*) + os=sysv3 + ;; + svr4*) + os=sysv4 + ;; + svr3) + os=sysv3 + ;; + sysvr4) + os=sysv4 + ;; + # This must come after sysvr4. + sysv*) + ;; + ose*) + os=ose + ;; + *mint | mint[0-9]* | *MiNT | MiNT[0-9]*) + os=mint + ;; + zvmoe) + os=zvmoe + ;; + dicos*) + os=dicos + ;; + pikeos*) + # Until real need of OS specific support for + # particular features comes up, bare metal + # configurations are quite functional. + case $cpu in + arm*) + os=eabi + ;; + *) + os=elf + ;; + esac + ;; + nacl*) + ;; + ios) + ;; + none) + ;; + *-eabi) + ;; + *) + echo Invalid configuration \`"$1"\': system \`"$os"\' not recognized 1>&2 + exit 1 + ;; +esac +else + +# Here we handle the default operating systems that come with various machines. +# The value should be what the vendor currently ships out the door with their +# machine or put another way, the most popular os provided with the machine. + +# Note that if you're going to try to match "-MANUFACTURER" here (say, +# "-sun"), then you have to tell the case statement up towards the top +# that MANUFACTURER isn't an operating system. Otherwise, code above +# will signal an error saying that MANUFACTURER isn't an operating +# system, and we'll never get to this point. + +case $cpu-$vendor in + score-*) + os=elf + ;; + spu-*) + os=elf + ;; + *-acorn) + os=riscix1.2 + ;; + arm*-rebel) + os=linux + ;; + arm*-semi) + os=aout + ;; + c4x-* | tic4x-*) + os=coff + ;; + c8051-*) + os=elf + ;; + clipper-intergraph) + os=clix + ;; + hexagon-*) + os=elf + ;; + tic54x-*) + os=coff + ;; + tic55x-*) + os=coff + ;; + tic6x-*) + os=coff + ;; + # This must come before the *-dec entry. + pdp10-*) + os=tops20 + ;; + pdp11-*) + os=none + ;; + *-dec | vax-*) + os=ultrix4.2 + ;; + m68*-apollo) + os=domain + ;; + i386-sun) + os=sunos4.0.2 + ;; + m68000-sun) + os=sunos3 + ;; + m68*-cisco) + os=aout + ;; + mep-*) + os=elf + ;; + mips*-cisco) + os=elf + ;; + mips*-*) + os=elf + ;; + or32-*) + os=coff + ;; + *-tti) # must be before sparc entry or we get the wrong os. + os=sysv3 + ;; + sparc-* | *-sun) + os=sunos4.1.1 + ;; + pru-*) + os=elf + ;; + *-be) + os=beos + ;; + *-ibm) + os=aix + ;; + *-knuth) + os=mmixware + ;; + *-wec) + os=proelf + ;; + *-winbond) + os=proelf + ;; + *-oki) + os=proelf + ;; + *-hp) + os=hpux + ;; + *-hitachi) + os=hiux + ;; + i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent) + os=sysv + ;; + *-cbm) + os=amigaos + ;; + *-dg) + os=dgux + ;; + *-dolphin) + os=sysv3 + ;; + m68k-ccur) + os=rtu + ;; + m88k-omron*) + os=luna + ;; + *-next) + os=nextstep + ;; + *-sequent) + os=ptx + ;; + *-crds) + os=unos + ;; + *-ns) + os=genix + ;; + i370-*) + os=mvs + ;; + *-gould) + os=sysv + ;; + *-highlevel) + os=bsd + ;; + *-encore) + os=bsd + ;; + *-sgi) + os=irix + ;; + *-siemens) + os=sysv4 + ;; + *-masscomp) + os=rtu + ;; + f30[01]-fujitsu | f700-fujitsu) + os=uxpv + ;; + *-rom68k) + os=coff + ;; + *-*bug) + os=coff + ;; + *-apple) + os=macos + ;; + *-atari*) + os=mint + ;; + *-wrs) + os=vxworks + ;; + *) + os=none + ;; +esac +fi + +# Here we handle the case where we know the os, and the CPU type, but not the +# manufacturer. We pick the logical manufacturer. +case $vendor in + unknown) + case $os in + riscix*) + vendor=acorn + ;; + sunos*) + vendor=sun + ;; + cnk*|-aix*) + vendor=ibm + ;; + beos*) + vendor=be + ;; + hpux*) + vendor=hp + ;; + mpeix*) + vendor=hp + ;; + hiux*) + vendor=hitachi + ;; + unos*) + vendor=crds + ;; + dgux*) + vendor=dg + ;; + luna*) + vendor=omron + ;; + genix*) + vendor=ns + ;; + clix*) + vendor=intergraph + ;; + mvs* | opened*) + vendor=ibm + ;; + os400*) + vendor=ibm + ;; + ptx*) + vendor=sequent + ;; + tpf*) + vendor=ibm + ;; + vxsim* | vxworks* | windiss*) + vendor=wrs + ;; + aux*) + vendor=apple + ;; + hms*) + vendor=hitachi + ;; + mpw* | macos*) + vendor=apple + ;; + *mint | mint[0-9]* | *MiNT | MiNT[0-9]*) + vendor=atari + ;; + vos*) + vendor=stratus + ;; + esac + ;; +esac + +echo "$cpu-$vendor-$os" +exit + +# Local variables: +# eval: (add-hook 'before-save-hook 'time-stamp) +# time-stamp-start: "timestamp='" +# time-stamp-format: "%:y-%02m-%02d" +# time-stamp-end: "'" +# End: diff --git a/config/Docs.mk.in b/config/Docs.mk.in new file mode 100644 index 0000000000..e76e5cd5ff --- /dev/null +++ b/config/Docs.mk.in @@ -0,0 +1,9 @@ +-include $(XEN_ROOT)/config/Paths.mk + +# Tools +FIG2DEV := @FIG2DEV@ +POD2MAN := @POD2MAN@ +POD2HTML := @POD2HTML@ +POD2TEXT := @POD2TEXT@ +PANDOC := @PANDOC@ +PERL := @PERL@ diff --git a/config/FreeBSD.mk b/config/FreeBSD.mk new file mode 100644 index 0000000000..98a5117e60 --- /dev/null +++ b/config/FreeBSD.mk @@ -0,0 +1,9 @@ +include $(XEN_ROOT)/config/StdGNU.mk + +# No wget on FreeBSD base system +WGET = ftp +PKG_INSTALLDIR = ${prefix}/libdata/pkgconfig + +# Add the default pkg install path +APPEND_LIB += /usr/local/lib +APPEND_INCLUDES += /usr/local/include diff --git a/config/Linux.mk b/config/Linux.mk new file mode 100644 index 0000000000..2a84b6b0f3 --- /dev/null +++ b/config/Linux.mk @@ -0,0 +1,3 @@ +include $(XEN_ROOT)/config/StdGNU.mk + +SYSCONFIG_DIR = $(CONFIG_DIR)/$(CONFIG_LEAF_DIR) diff --git a/config/MiniOS.mk b/config/MiniOS.mk new file mode 100644 index 0000000000..32260ada91 --- /dev/null +++ b/config/MiniOS.mk @@ -0,0 +1,10 @@ +include $(XEN_ROOT)/config/StdGNU.mk +include $(XEN_ROOT)/extras/mini-os/Config.mk +CFLAGS += $(DEF_CFLAGS) $(ARCH_CFLAGS) +CPPFLAGS += $(DEF_CPPFLAGS) $(ARCH_CPPFLAGS) $(extra_incl) +ASFLAGS += $(DEF_ASFLAGS) $(ARCH_ASFLAGS) +LDFLAGS += $(DEF_LDFLAGS) $(ARCH_LDFLAGS) + +# Override settings for this OS +PTHREAD_LIBS = +nosharedlibs=y diff --git a/config/NetBSD.mk b/config/NetBSD.mk new file mode 100644 index 0000000000..cf766e5abc --- /dev/null +++ b/config/NetBSD.mk @@ -0,0 +1,3 @@ +include $(XEN_ROOT)/config/StdGNU.mk + +WGET = ftp diff --git a/config/NetBSDRump.mk b/config/NetBSDRump.mk new file mode 100644 index 0000000000..74755a1c36 --- /dev/null +++ b/config/NetBSDRump.mk @@ -0,0 +1,8 @@ +include $(XEN_ROOT)/config/StdGNU.mk + +PTHREAD_LIBS = + +WGET = ftp + +XENSTORE_XENSTORED=n +nosharedlibs=y diff --git a/config/OpenBSD.mk b/config/OpenBSD.mk new file mode 100644 index 0000000000..b421a1c840 --- /dev/null +++ b/config/OpenBSD.mk @@ -0,0 +1 @@ +include $(XEN_ROOT)/config/StdGNU.mk diff --git a/config/Paths.mk.in b/config/Paths.mk.in new file mode 100644 index 0000000000..416fc7aab9 --- /dev/null +++ b/config/Paths.mk.in @@ -0,0 +1,61 @@ +# Xen system configuration +# ======================== +# +# Xen uses a set of variables for system configuration and at build time, +# because of this these variables are defined on one master input source file +# and is generated after running ./configure. The master source is located +# on the xen source tree at under config/Paths.mk.in and it is used to +# generate shell or header files by the build system upon demand through the +# use of the helper makefile helper buildmakevars2file(). +# +# For more documentation you can refer to the wiki: +# +# https://wiki.xen.org/wiki/Category:Host_Configuration#System_wide_xen_configuration + +PACKAGE_TARNAME := @PACKAGE_TARNAME@ +prefix := @prefix@ +bindir := @bindir@ +sbindir := @sbindir@ +libdir := @libdir@ +libexecdir := @libexecdir@ +datarootdir := @datarootdir@ +mandir := @mandir@ +docdir := @docdir@ +dvidir := @dvidir@ +htmldir := @htmldir@ +pdfdir := @pdfdir@ +psdir := @psdir@ +includedir := @includedir@ +localstatedir := @localstatedir@ +sysconfdir := @sysconfdir@ + +LIBEXEC := @LIBEXEC@ +LIBEXEC_BIN := @LIBEXEC_BIN@ +LIBEXEC_LIB := @LIBEXEC_LIB@ +LIBEXEC_INC := @LIBEXEC_INC@ + +SHAREDIR := @SHAREDIR@ +MAN1DIR := $(mandir)/man1 +MAN8DIR := $(mandir)/man8 + +XEN_RUN_DIR := @XEN_RUN_DIR@ +XEN_LOG_DIR := @XEN_LOG_DIR@ +XEN_LIB_DIR := @XEN_LIB_DIR@ +XEN_LIB_STORED := @XEN_LIB_STORED@ +XEN_RUN_STORED := @XEN_RUN_STORED@ + +CONFIG_DIR := @CONFIG_DIR@ +INITD_DIR := @INITD_DIR@ +CONFIG_LEAF_DIR := @CONFIG_LEAF_DIR@ +BASH_COMPLETION_DIR := $(CONFIG_DIR)/bash_completion.d +XEN_LOCK_DIR := @XEN_LOCK_DIR@ +XEN_PAGING_DIR := @XEN_PAGING_DIR@ +XEN_DUMP_DIR := @XEN_DUMP_DIR@ +DEBUG_DIR := @DEBUG_DIR@ + +XENFIRMWAREDIR := @XENFIRMWAREDIR@ + +XEN_CONFIG_DIR := @XEN_CONFIG_DIR@ +XEN_SCRIPT_DIR := @XEN_SCRIPT_DIR@ + +PKG_INSTALLDIR := ${libdir}/pkgconfig diff --git a/config/StdGNU.mk b/config/StdGNU.mk new file mode 100644 index 0000000000..039274ea61 --- /dev/null +++ b/config/StdGNU.mk @@ -0,0 +1,37 @@ +AS = $(CROSS_COMPILE)as +LD = $(CROSS_COMPILE)ld +ifeq ($(clang),y) +CC = $(CROSS_COMPILE)clang +CXX = $(CROSS_COMPILE)clang++ +LD_LTO = $(CROSS_COMPILE)llvm-ld +else +CC = $(CROSS_COMPILE)gcc +CXX = $(CROSS_COMPILE)g++ +LD_LTO = $(CROSS_COMPILE)ld +endif +CPP = $(CC) -E +AR = $(CROSS_COMPILE)ar +RANLIB = $(CROSS_COMPILE)ranlib +NM = $(CROSS_COMPILE)nm +STRIP = $(CROSS_COMPILE)strip +OBJCOPY = $(CROSS_COMPILE)objcopy +OBJDUMP = $(CROSS_COMPILE)objdump +SIZEUTIL = $(CROSS_COMPILE)size + +# Allow git to be wrappered in the environment +GIT ?= git + +INSTALL = install +INSTALL_DIR = $(INSTALL) -d -m0755 -p +INSTALL_DATA = $(INSTALL) -m0644 -p +INSTALL_PROG = $(INSTALL) -m0755 -p + +BOOT_DIR ?= /boot +DEBUG_DIR ?= /usr/lib/debug + +SOCKET_LIBS = +UTIL_LIBS = -lutil + +SONAME_LDFLAG = -soname +SHLIB_LDFLAGS = -shared + diff --git a/config/Stubdom.mk.in b/config/Stubdom.mk.in new file mode 100644 index 0000000000..5990fc4e04 --- /dev/null +++ b/config/Stubdom.mk.in @@ -0,0 +1,39 @@ +-include $(XEN_ROOT)/config/Paths.mk + +# Path Programs +CMAKE := @CMAKE@ +FETCHER := @FETCHER@ + +# A debug build of stubdom? //FIXME: Someone make this do something +debug := @debug@ + +STUBDOM_TARGETS := @STUBDOM_TARGETS@ +STUBDOM_BUILD := @STUBDOM_BUILD@ +STUBDOM_INSTALL := @STUBDOM_INSTALL@ + +ZLIB_VERSION := @ZLIB_VERSION@ +ZLIB_URL := @ZLIB_URL@ + +LIBPCI_VERSION := @LIBPCI_VERSION@ +LIBPCI_URL := @LIBPCI_URL@ + +NEWLIB_VERSION := @NEWLIB_VERSION@ +NEWLIB_URL := @NEWLIB_URL@ + +LWIP_VERSION := @LWIP_VERSION@ +LWIP_URL := @LWIP_URL@ + +GRUB_VERSION := @GRUB_VERSION@ +GRUB_URL := @GRUB_URL@ + +OCAML_VERSION := @OCAML_VERSION@ +OCAML_URL := @OCAML_URL@ + +GMP_VERSION := @GMP_VERSION@ +GMP_URL := @GMP_URL@ + +POLARSSL_VERSION := @POLARSSL_VERSION@ +POLARSSL_URL := @POLARSSL_URL@ + +TPMEMU_VERSION := @TPMEMU_VERSION@ +TPMEMU_URL := @TPMEMU_URL@ diff --git a/config/SunOS.mk b/config/SunOS.mk new file mode 100644 index 0000000000..0fe5f45590 --- /dev/null +++ b/config/SunOS.mk @@ -0,0 +1,35 @@ +AS = $(CROSS_COMPILE)gas +LD = $(CROSS_COMPILE)gld +CC = $(CROSS_COMPILE)gcc +CPP = $(CROSS_COMPILE)gcc -E +CXX = $(CROSS_COMPILE)g++ +AR = $(CROSS_COMPILE)gar +RANLIB = $(CROSS_COMPILE)granlib +NM = $(CROSS_COMPILE)gnm +STRIP = $(CROSS_COMPILE)gstrip +OBJCOPY = $(CROSS_COMPILE)gobjcopy +OBJDUMP = $(CROSS_COMPILE)gobjdump +SIZEUTIL = $(CROSS_COMPILE)gsize + +SHELL = bash + +INSTALL = ginstall +INSTALL_DIR = $(INSTALL) -d -m0755 -p +INSTALL_DATA = $(INSTALL) -m0644 -p +INSTALL_PROG = $(INSTALL) -m0755 -p + +BOOT_DIR ?= /boot +DEBUG_DIR ?= /usr/lib/debug + +SunOS_LIBDIR = /usr/sfw/lib +SunOS_LIBDIR_x86_64 = /usr/sfw/lib/amd64 + +SOCKET_LIBS = -lsocket +PTHREAD_LIBS = -lpthread +UTIL_LIBS = + +SONAME_LDFLAG = -h +SHLIB_LDFLAGS = -R $(SunOS_LIBDIR) -shared + +CFLAGS += -Wa,--divide -D_POSIX_C_SOURCE=200112L -D__EXTENSIONS__ + diff --git a/config/Tools.mk.in b/config/Tools.mk.in new file mode 100644 index 0000000000..23df47af8d --- /dev/null +++ b/config/Tools.mk.in @@ -0,0 +1,79 @@ +-include $(XEN_ROOT)/config/Paths.mk + +CONFIG_RUMP := @CONFIG_RUMP@ +ifeq ($(CONFIG_RUMP),y) +XEN_OS := NetBSDRump +endif + +# Tools path +BISON := @BISON@ +FLEX := @FLEX@ +PYTHON := @PYTHON@ +PYTHON_PATH := @PYTHONPATH@ +PY_NOOPT_CFLAGS := @PY_NOOPT_CFLAGS@ +PERL := @PERL@ +BASH := @BASH@ +XGETTTEXT := @XGETTEXT@ +AS86 := @AS86@ +LD86 := @LD86@ +BCC := @BCC@ +IASL := @IASL@ +AWK := @AWK@ +FETCHER := @FETCHER@ + +# Extra folder for libs/includes +PREPEND_INCLUDES := @PREPEND_INCLUDES@ +PREPEND_LIB := @PREPEND_LIB@ +APPEND_INCLUDES := @APPEND_INCLUDES@ +APPEND_LIB := @APPEND_LIB@ + +PTHREAD_CFLAGS := @PTHREAD_CFLAGS@ +PTHREAD_LDFLAGS := @PTHREAD_LDFLAGS@ +PTHREAD_LIBS := @PTHREAD_LIBS@ + +PTYFUNCS_LIBS := @PTYFUNCS_LIBS@ + +LIBNL3_LIBS := @LIBNL3_LIBS@ +LIBNL3_CFLAGS := @LIBNL3_CFLAGS@ +XEN_TOOLS_RPATH := @rpath@ + +# Download GIT repositories via HTTP or GIT's own protocol? +# GIT's protocol is faster and more robust, when it works at all (firewalls +# may block it). We make it the default, but if your GIT repository downloads +# fail or hang, please pass --enable-githttp to configure. +GIT_HTTP ?= @githttp@ + +# Optional components +XENSTAT_XENTOP := @monitors@ +OCAML_TOOLS := @ocamltools@ +FLASK_POLICY := @xsmpolicy@ +CONFIG_OVMF := @ovmf@ +CONFIG_ROMBIOS := @rombios@ +CONFIG_SEABIOS := @seabios@ +CONFIG_IPXE := @ipxe@ +CONFIG_QEMU_TRAD := @qemu_traditional@ +CONFIG_QEMU_XEN := @qemu_xen@ +CONFIG_QEMUU_EXTRA_ARGS:= @EXTRA_QEMUU_CONFIGURE_ARGS@ +CONFIG_LIBNL := @libnl@ +CONFIG_GOLANG := @golang@ + +CONFIG_SYSTEMD := @systemd@ +SYSTEMD_CFLAGS := @SYSTEMD_CFLAGS@ +SYSTEMD_LIBS := @SYSTEMD_LIBS@ +XEN_SYSTEMD_DIR := @SYSTEMD_DIR@ +XEN_SYSTEMD_MODULES_LOAD := @SYSTEMD_MODULES_LOAD@ +CONFIG_9PFS := @ninepfs@ + +LINUX_BACKEND_MODULES := @LINUX_BACKEND_MODULES@ + +#System options +ZLIB := @zlib@ +CONFIG_LIBICONV := @libiconv@ +EXTFS_LIBS := @EXTFS_LIBS@ +CURSES_LIBS := @CURSES_LIBS@ +TINFO_LIBS := @TINFO_LIBS@ +ARGP_LDFLAGS := @argp_ldflags@ + +FILE_OFFSET_BITS := @FILE_OFFSET_BITS@ + +CONFIG_PV_SHIM := @pvshim@ diff --git a/config/Toplevel.mk.in b/config/Toplevel.mk.in new file mode 100644 index 0000000000..4ecacbb37d --- /dev/null +++ b/config/Toplevel.mk.in @@ -0,0 +1,2 @@ +SUBSYSTEMS := @SUBSYSTEMS@ +GIT_HTTP ?= @githttp@ diff --git a/config/arm32.mk b/config/arm32.mk new file mode 100644 index 0000000000..f95228e3c0 --- /dev/null +++ b/config/arm32.mk @@ -0,0 +1,15 @@ +CONFIG_ARM := y +CONFIG_ARM_32 := y +CONFIG_ARM_$(XEN_OS) := y + +CONFIG_XEN_INSTALL_SUFFIX := + +# -march= -mcpu= + +# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb: +CFLAGS += -marm + +# Use only if calling $(LD) directly. +LDFLAGS_DIRECT += -EL + +IOEMU_CPU_ARCH ?= arm diff --git a/config/arm64.mk b/config/arm64.mk new file mode 100644 index 0000000000..aa45772b61 --- /dev/null +++ b/config/arm64.mk @@ -0,0 +1,14 @@ +CONFIG_ARM := y +CONFIG_ARM_64 := y +CONFIG_ARM_$(XEN_OS) := y + +CONFIG_XEN_INSTALL_SUFFIX := + +CFLAGS += #-marm -march= -mcpu= etc + +# Use only if calling $(LD) directly. +LDFLAGS_DIRECT += -EL + +IOEMU_CPU_ARCH ?= aarch64 + +EFI_DIR ?= /usr/lib64/efi diff --git a/config/x86_32.mk b/config/x86_32.mk new file mode 100644 index 0000000000..29d13f7773 --- /dev/null +++ b/config/x86_32.mk @@ -0,0 +1,15 @@ +CONFIG_X86 := y +CONFIG_X86_32 := y +CONFIG_X86_$(XEN_OS) := y + +CONFIG_MIGRATE := y +CONFIG_XCUTILS := y + +CFLAGS += -m32 -march=i686 + +# Use only if calling $(LD) directly. +LDFLAGS_DIRECT_OpenBSD = _obsd +LDFLAGS_DIRECT_FreeBSD = _fbsd +LDFLAGS_DIRECT += -melf_i386$(LDFLAGS_DIRECT_$(XEN_OS)) + +IOEMU_CPU_ARCH ?= i386 diff --git a/config/x86_64.mk b/config/x86_64.mk new file mode 100644 index 0000000000..85fa27ca69 --- /dev/null +++ b/config/x86_64.mk @@ -0,0 +1,27 @@ +CONFIG_X86 := y +CONFIG_X86_64 := y +CONFIG_X86_$(XEN_OS) := y + +CONFIG_MIGRATE := y +CONFIG_XCUTILS := y + +CONFIG_XEN_INSTALL_SUFFIX := .gz + +CFLAGS += -m64 + +SunOS_LIBDIR = $(SunOS_LIBDIR_x86_64) + +EFI_DIR ?= /usr/lib64/efi + +# Use only if calling $(LD) directly. +ifeq ($(XEN_OS),OpenBSD) +LDFLAGS_DIRECT += -melf_x86_64_obsd +else +ifeq ($(XEN_OS),FreeBSD) +LDFLAGS_DIRECT += -melf_x86_64_fbsd +else +LDFLAGS_DIRECT += -melf_x86_64 +endif +endif + +IOEMU_CPU_ARCH ?= x86_64 diff --git a/configure b/configure new file mode 100755 index 0000000000..9da3970cef --- /dev/null +++ b/configure @@ -0,0 +1,3618 @@ +#! /bin/sh +# Guess values for system-dependent variables and create Makefiles. +# Generated by GNU Autoconf 2.69 for Xen Hypervisor 4.14. +# +# Report bugs to . +# +# +# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. +# +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +as_myself= +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +# Use a proper internal environment variable to ensure we don't fall + # into an infinite loop, continuously re-executing ourselves. + if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then + _as_can_reexec=no; export _as_can_reexec; + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +as_fn_exit 255 + fi + # We don't want this to propagate to other subprocesses. + { _as_can_reexec=; unset _as_can_reexec;} +if test "x$CONFIG_SHELL" = x; then + as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which + # is contrary to our usage. Disable this feature. + alias -g '\${1+\"\$@\"}'='\"\$@\"' + setopt NO_GLOB_SUBST +else + case \`(set -o) 2>/dev/null\` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi +" + as_required="as_fn_return () { (exit \$1); } +as_fn_success () { as_fn_return 0; } +as_fn_failure () { as_fn_return 1; } +as_fn_ret_success () { return 0; } +as_fn_ret_failure () { return 1; } + +exitcode=0 +as_fn_success || { exitcode=1; echo as_fn_success failed.; } +as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; } +as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; } +as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; } +if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then : + +else + exitcode=1; echo positional parameters were not saved. +fi +test x\$exitcode = x0 || exit 1 +test -x / || exit 1" + as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO + as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO + eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" && + test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1" + if (eval "$as_required") 2>/dev/null; then : + as_have_required=yes +else + as_have_required=no +fi + if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then : + +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +as_found=false +for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + as_found=: + case $as_dir in #( + /*) + for as_base in sh bash ksh sh5; do + # Try only shells that exist, to save several forks. + as_shell=$as_dir/$as_base + if { test -f "$as_shell" || test -f "$as_shell.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then : + CONFIG_SHELL=$as_shell as_have_required=yes + if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then : + break 2 +fi +fi + done;; + esac + as_found=false +done +$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then : + CONFIG_SHELL=$SHELL as_have_required=yes +fi; } +IFS=$as_save_IFS + + + if test "x$CONFIG_SHELL" != x; then : + export CONFIG_SHELL + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +exit 255 +fi + + if test x$as_have_required = xno; then : + $as_echo "$0: This script requires a shell more modern than all" + $as_echo "$0: the shells that I found on your system." + if test x${ZSH_VERSION+set} = xset ; then + $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should" + $as_echo "$0: be upgraded to zsh 4.3.4 or later." + else + $as_echo "$0: Please tell bug-autoconf@gnu.org and +$0: xen-devel@lists.xen.org about your system, including +$0: any error possibly output before this message. 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"cannot create directory $as_dir" + + +} # as_fn_mkdir_p + +# as_fn_executable_p FILE +# ----------------------- +# Test if FILE is an executable regular file. +as_fn_executable_p () +{ + test -f "$1" && test -x "$1" +} # as_fn_executable_p +# as_fn_append VAR VALUE +# ---------------------- +# Append the text in VALUE to the end of the definition contained in VAR. Take +# advantage of any shell optimizations that allow amortized linear growth over +# repeated appends, instead of the typical quadratic growth present in naive +# implementations. +if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then : + eval 'as_fn_append () + { + eval $1+=\$2 + }' +else + as_fn_append () + { + eval $1=\$$1\$2 + } +fi # as_fn_append + +# as_fn_arith ARG... +# ------------------ +# Perform arithmetic evaluation on the ARGs, and store the result in the +# global $as_val. Take advantage of shells that can avoid forks. The arguments +# must be portable across $(()) and expr. +if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then : + eval 'as_fn_arith () + { + as_val=$(( $* )) + }' +else + as_fn_arith () + { + as_val=`expr "$@" || test $? -eq 1` + } +fi # as_fn_arith + + +# as_fn_error STATUS ERROR [LINENO LOG_FD] +# ---------------------------------------- +# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are +# provided, also output the error to LOG_FD, referencing LINENO. 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McMahon (1931-1989) for sed's syntax. :-) + sed -n ' + p + /[$]LINENO/= + ' <$as_myself | + sed ' + s/[$]LINENO.*/&-/ + t lineno + b + :lineno + N + :loop + s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/ + t loop + s/-\n.*// + ' >$as_me.lineno && + chmod +x "$as_me.lineno" || + { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; } + + # If we had to re-execute with $CONFIG_SHELL, we're ensured to have + # already done that, so ensure we don't try to do so again and fall + # in an infinite loop. This has already happened in practice. + _as_can_reexec=no; export _as_can_reexec + # Don't try to exec as it changes $[0], causing all sort of problems + # (the dirname of $[0] is not the place where we might find the + # original and so on. Autoconf is especially sensitive to this). + . "./$as_me.lineno" + # Exit status is that of the last command. + exit +} + +ECHO_C= ECHO_N= ECHO_T= +case `echo -n x` in #((((( +-n*) + case `echo 'xy\c'` in + *c*) ECHO_T=' ';; # ECHO_T is single tab character. + xy) ECHO_C='\c';; + *) echo `echo ksh88 bug on AIX 6.1` > /dev/null + ECHO_T=' ';; + esac;; +*) + ECHO_N='-n';; +esac + +rm -f conf$$ conf$$.exe conf$$.file +if test -d conf$$.dir; then + rm -f conf$$.dir/conf$$.file +else + rm -f conf$$.dir + mkdir conf$$.dir 2>/dev/null +fi +if (echo >conf$$.file) 2>/dev/null; then + if ln -s conf$$.file conf$$ 2>/dev/null; then + as_ln_s='ln -s' + # ... but there are two gotchas: + # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail. + # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable. + # In both cases, we have to default to `cp -pR'. + ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe || + as_ln_s='cp -pR' + elif ln conf$$.file conf$$ 2>/dev/null; then + as_ln_s=ln + else + as_ln_s='cp -pR' + fi +else + as_ln_s='cp -pR' +fi +rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file +rmdir conf$$.dir 2>/dev/null + +if mkdir -p . 2>/dev/null; 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See below for descriptions of some of the useful variables. + +Defaults for the options are specified in brackets. + +Configuration: + -h, --help display this help and exit + --help=short display options specific to this package + --help=recursive display the short help of all the included packages + -V, --version display version information and exit + -q, --quiet, --silent do not print \`checking ...' messages + --cache-file=FILE cache test results in FILE [disabled] + -C, --config-cache alias for \`--cache-file=config.cache' + -n, --no-create do not create output files + --srcdir=DIR find the sources in DIR [configure dir or \`..'] + +Installation directories: + --prefix=PREFIX install architecture-independent files in PREFIX + [$ac_default_prefix] + --exec-prefix=EPREFIX install architecture-dependent files in EPREFIX + [PREFIX] + +By default, \`make install' will install all the files in +\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc. You can specify +an installation prefix other than \`$ac_default_prefix' using \`--prefix', +for instance \`--prefix=\$HOME'. + +For better control, use the options below. + +Fine tuning of the installation directories: + --bindir=DIR user executables [EPREFIX/bin] + --sbindir=DIR system admin executables [EPREFIX/sbin] + --libexecdir=DIR program executables [EPREFIX/libexec] + --sysconfdir=DIR read-only single-machine data [PREFIX/etc] + --sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com] + --localstatedir=DIR modifiable single-machine data [PREFIX/var] + --runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run] + --libdir=DIR object code libraries [EPREFIX/lib] + --includedir=DIR C header files [PREFIX/include] + --oldincludedir=DIR C header files for non-gcc [/usr/include] + --datarootdir=DIR read-only arch.-independent data root [PREFIX/share] + --datadir=DIR read-only architecture-independent data [DATAROOTDIR] + --infodir=DIR info documentation [DATAROOTDIR/info] + --localedir=DIR locale-dependent data [DATAROOTDIR/locale] + --mandir=DIR man documentation [DATAROOTDIR/man] + --docdir=DIR documentation root [DATAROOTDIR/doc/xen] + --htmldir=DIR html documentation [DOCDIR] + --dvidir=DIR dvi documentation [DOCDIR] + --pdfdir=DIR pdf documentation [DOCDIR] + --psdir=DIR ps documentation [DOCDIR] +_ACEOF + + cat <<\_ACEOF + +System types: + --build=BUILD configure for building on BUILD [guessed] + --host=HOST cross-compile to build programs to run on HOST [BUILD] +_ACEOF +fi + +if test -n "$ac_init_help"; then + case $ac_init_help in + short | recursive ) echo "Configuration of Xen Hypervisor 4.14:";; + esac + cat <<\_ACEOF + +Optional Features: + --disable-option-checking ignore unrecognized --enable/--with options + --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no) + --enable-FEATURE[=ARG] include FEATURE [ARG=yes] + --enable-githttp Download GIT repositories via HTTP (default is + DISABLED) + --disable-xen Disable build and install of xen + --disable-tools Disable build and install of tools + --enable-stubdom Enable build and install of stubdom + --disable-docs Disable build and install of docs + +Optional Packages: + --with-PACKAGE[=ARG] use PACKAGE [ARG=yes] + --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no) + --with-initddir=DIR Path to directory with sysv runlevel scripts. + [SYSCONFDIR/init.d] + --with-sysconfig-leaf-dir=SUBDIR + Name of subdirectory in /etc to store runtime + options for runlevel scripts and daemons such as + xenstored. 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-d /etc/sysconfig ; then config_leaf_dir=default ; fi +fi + +CONFIG_LEAF_DIR=$config_leaf_dir + + + +# Check whether --with-libexec-leaf-dir was given. +if test "${with_libexec_leaf_dir+set}" = set; then : + withval=$with_libexec_leaf_dir; libexec_subdir=$withval +else + libexec_subdir=$PACKAGE_TARNAME +fi + + + +# Check whether --with-xen-dumpdir was given. +if test "${with_xen_dumpdir+set}" = set; then : + withval=$with_xen_dumpdir; xen_dumpdir_path=$withval +else + xen_dumpdir_path=$localstatedir/lib/xen/dump +fi + + + +# Check whether --with-rundir was given. +if test "${with_rundir+set}" = set; then : + withval=$with_rundir; rundir_path=$withval +else + rundir_path=$localstatedir/run +fi + + + +# Check whether --with-debugdir was given. +if test "${with_debugdir+set}" = set; then : + withval=$with_debugdir; debugdir_path=$withval +else + debugdir_path=$prefix/lib/debug +fi + + +if test "$libexecdir" = '${exec_prefix}/libexec' ; then + case "$host_os" in + *netbsd*) ;; + *) + libexecdir='${exec_prefix}/lib' + ;; + esac +fi +LIBEXEC=`eval echo $libexecdir/$libexec_subdir` + + +LIBEXEC_BIN=${LIBEXEC}/bin + +LIBEXEC_LIB=${LIBEXEC}/lib + +LIBEXEC_INC=${LIBEXEC}/include + +XENFIRMWAREDIR=${LIBEXEC}/boot + + +XEN_RUN_DIR=$rundir_path/xen + + +XEN_LOG_DIR=$localstatedir/log/xen + + +XEN_LIB_STORED=$localstatedir/lib/xenstored + + +XEN_RUN_STORED=$rundir_path/xenstored + + +XEN_LIB_DIR=$localstatedir/lib/xen + + +SHAREDIR=$prefix/share + + +CONFIG_DIR=$sysconfdir + + +INITD_DIR=$initddir_path + + +XEN_CONFIG_DIR=$CONFIG_DIR/xen + + +XEN_SCRIPT_DIR=$XEN_CONFIG_DIR/scripts + + +case "$host_os" in +*freebsd*) XEN_LOCK_DIR=$localstatedir/lib ;; +*netbsd*) XEN_LOCK_DIR=$localstatedir/lib ;; +*) XEN_LOCK_DIR=$localstatedir/lock ;; +esac + + +XEN_PAGING_DIR=$localstatedir/lib/xen/xenpaging + + +XEN_DUMP_DIR=$xen_dumpdir_path + + +DEBUG_DIR=$debugdir_path + + + +# Check whether --enable-githttp was given. +if test "${enable_githttp+set}" = set; then : + enableval=$enable_githttp; +fi + + +if test "x$enable_githttp" = "xno"; then : + + ax_cv_githttp="n" + +elif test "x$enable_githttp" = "xyes"; then : + + ax_cv_githttp="y" + +elif test -z $ax_cv_githttp; then : + + ax_cv_githttp="n" + +fi +githttp=$ax_cv_githttp + + + +case "$host_cpu" in + i[3456]86|x86_64) + arch_enable_stubdom=y + ;; + *) + arch_enable_stubdom=n + ;; +esac + +case "$host_os" in + freebsd*) + arch_enable_stubdom=n + ;; +esac + + + + +# Check whether --enable-xen was given. +if test "${enable_xen+set}" = set; then : + enableval=$enable_xen; + +if test "x$enableval" = "xyes"; then : + + +xen=y +SUBSYSTEMS="$SUBSYSTEMS xen" + + +else + +if test "x$enableval" = "xno"; then : + + +xen=n + + +fi + +fi + + +else + + +xen=y +SUBSYSTEMS="$SUBSYSTEMS xen" + + +fi + + +if test -e "xen/configure"; then : + +if test "x$xen" = "xy" || test "x$xen" = "x" ; then + subdirs="$subdirs xen" + +fi + +fi + + + + +# Check whether --enable-tools was given. +if test "${enable_tools+set}" = set; then : + enableval=$enable_tools; + +if test "x$enableval" = "xyes"; then : + + +tools=y +SUBSYSTEMS="$SUBSYSTEMS tools" + + +else + +if test "x$enableval" = "xno"; then : + + +tools=n + + +fi + +fi + + +else + + +tools=y +SUBSYSTEMS="$SUBSYSTEMS tools" + + +fi + + +if test -e "tools/configure"; then : + +if test "x$tools" = "xy" || test "x$tools" = "x" ; then + subdirs="$subdirs tools" + +fi + +fi + + + + +# Check whether --enable-stubdom was given. +if test "${enable_stubdom+set}" = set; then : + enableval=$enable_stubdom; + +if test "x$enableval" = "xyes"; then : + + +stubdom=y +SUBSYSTEMS="$SUBSYSTEMS stubdom" + + +else + +if test "x$enableval" = "xno"; then : + + +stubdom=n + + +fi + +fi + + +else + +if test "x$arch_enable_stubdom" = "xy"; then : + + +stubdom=y +SUBSYSTEMS="$SUBSYSTEMS stubdom" + + +else + + +stubdom=n + + +fi + +fi + + +if test -e "stubdom/configure"; then : + +if test "x$stubdom" = "xy" || test "x$stubdom" = "x" ; then + subdirs="$subdirs stubdom" + +fi + +fi + + + + +# Check whether --enable-docs was given. +if test "${enable_docs+set}" = set; then : + enableval=$enable_docs; + +if test "x$enableval" = "xyes"; then : + + +docs=y +SUBSYSTEMS="$SUBSYSTEMS docs" + + +else + +if test "x$enableval" = "xno"; then : + + +docs=n + + +fi + +fi + + +else + + +docs=y +SUBSYSTEMS="$SUBSYSTEMS docs" + + +fi + + +if test -e "docs/configure"; then : + +if test "x$docs" = "xy" || test "x$docs" = "x" ; then + subdirs="$subdirs docs" + +fi + +fi + + + + + + +echo "Will build the following subsystems:" +for x in $SUBSYSTEMS; do + echo " $x" +done + + +cat >confcache <<\_ACEOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs, see configure's option --config-cache. +# It is not useful on other systems. If it contains results you don't +# want to keep, you may remove or edit it. +# +# config.status only pays attention to the cache file if you give it +# the --recheck option to rerun configure. +# +# `ac_cv_env_foo' variables (set or unset) will be overridden when +# loading this file, other *unset* `ac_cv_foo' will be assigned the +# following values. + +_ACEOF + +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, we kill variables containing newlines. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +( + for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do + eval ac_val=\$$ac_var + case $ac_val in #( + *${as_nl}*) + case $ac_var in #( + *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5 +$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;; + esac + case $ac_var in #( + _ | IFS | as_nl) ;; #( + BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #( + *) { eval $ac_var=; unset $ac_var;} ;; + esac ;; + esac + done + + (set) 2>&1 | + case $as_nl`(ac_space=' '; set) 2>&1` in #( + *${as_nl}ac_space=\ *) + # `set' does not quote correctly, so add quotes: double-quote + # substitution turns \\\\ into \\, and sed turns \\ into \. + sed -n \ + "s/'/'\\\\''/g; + s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p" + ;; #( + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p" + ;; + esac | + sort +) | + sed ' + /^ac_cv_env_/b end + t clear + :clear + s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/ + t end + s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/ + :end' >>confcache +if diff "$cache_file" confcache >/dev/null 2>&1; then :; else + if test -w "$cache_file"; then + if test "x$cache_file" != "x/dev/null"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5 +$as_echo "$as_me: updating cache $cache_file" >&6;} + if test ! -f "$cache_file" || test -h "$cache_file"; then + cat confcache >"$cache_file" + else + case $cache_file in #( + */* | ?:*) + mv -f confcache "$cache_file"$$ && + mv -f "$cache_file"$$ "$cache_file" ;; #( + *) + mv -f confcache "$cache_file" ;; + esac + fi + fi + else + { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5 +$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;} + fi +fi +rm -f confcache + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +# Transform confdefs.h into DEFS. +# Protect against shell expansion while executing Makefile rules. +# Protect against Makefile macro expansion. +# +# If the first sed substitution is executed (which looks for macros that +# take arguments), then branch to the quote section. Otherwise, +# look for a macro that doesn't take arguments. +ac_script=' +:mline +/\\$/{ + N + s,\\\n,, + b mline +} +t clear +:clear +s/^[ ]*#[ ]*define[ ][ ]*\([^ (][^ (]*([^)]*)\)[ ]*\(.*\)/-D\1=\2/g +t quote +s/^[ ]*#[ ]*define[ ][ ]*\([^ ][^ ]*\)[ ]*\(.*\)/-D\1=\2/g +t quote +b any +:quote +s/[ `~#$^&*(){}\\|;'\''"<>?]/\\&/g +s/\[/\\&/g +s/\]/\\&/g +s/\$/$$/g +H +:any +${ + g + s/^\n// + s/\n/ /g + p +} +' +DEFS=`sed -n "$ac_script" confdefs.h` + + +ac_libobjs= +ac_ltlibobjs= +U= +for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue + # 1. Remove the extension, and $U if already installed. + ac_script='s/\$U\././;s/\.o$//;s/\.obj$//' + ac_i=`$as_echo "$ac_i" | sed "$ac_script"` + # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR + # will be set to the directory where LIBOBJS objects are built. + as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext" + as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo' +done +LIBOBJS=$ac_libobjs + +LTLIBOBJS=$ac_ltlibobjs + + + +: "${CONFIG_STATUS=./config.status}" +ac_write_fail=0 +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files $CONFIG_STATUS" +{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5 +$as_echo "$as_me: creating $CONFIG_STATUS" >&6;} +as_write_fail=0 +cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1 +#! $SHELL +# Generated by $as_me. +# Run this file to recreate the current configuration. +# Compiler output produced by configure, useful for debugging +# configure, is in config.log if it exists. + +debug=false +ac_cs_recheck=false +ac_cs_silent=false + +SHELL=\${CONFIG_SHELL-$SHELL} +export SHELL +_ASEOF +cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1 +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +as_myself= +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + + +# as_fn_error STATUS ERROR [LINENO LOG_FD] +# ---------------------------------------- +# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are +# provided, also output the error to LOG_FD, referencing LINENO. Then exit the +# script with STATUS, using 1 if that was 0. +as_fn_error () +{ + as_status=$1; test $as_status -eq 0 && as_status=1 + if test "$4"; then + as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4 + fi + $as_echo "$as_me: error: $2" >&2 + as_fn_exit $as_status +} # as_fn_error + + +# as_fn_set_status STATUS +# ----------------------- +# Set $? to STATUS, without forking. +as_fn_set_status () +{ + return $1 +} # as_fn_set_status + +# as_fn_exit STATUS +# ----------------- +# Exit the shell with STATUS, even in a "trap 0" or "set -e" context. +as_fn_exit () +{ + set +e + as_fn_set_status $1 + exit $1 +} # as_fn_exit + +# as_fn_unset VAR +# --------------- +# Portably unset VAR. +as_fn_unset () +{ + { eval $1=; unset $1;} +} +as_unset=as_fn_unset +# as_fn_append VAR VALUE +# ---------------------- +# Append the text in VALUE to the end of the definition contained in VAR. Take +# advantage of any shell optimizations that allow amortized linear growth over +# repeated appends, instead of the typical quadratic growth present in naive +# implementations. +if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then : + eval 'as_fn_append () + { + eval $1+=\$2 + }' +else + as_fn_append () + { + eval $1=\$$1\$2 + } +fi # as_fn_append + +# as_fn_arith ARG... +# ------------------ +# Perform arithmetic evaluation on the ARGs, and store the result in the +# global $as_val. Take advantage of shells that can avoid forks. The arguments +# must be portable across $(()) and expr. +if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then : + eval 'as_fn_arith () + { + as_val=$(( $* )) + }' +else + as_fn_arith () + { + as_val=`expr "$@" || test $? -eq 1` + } +fi # as_fn_arith + + +if expr a : '\(a\)' >/dev/null 2>&1 && + test "X`expr 00001 : '.*\(...\)'`" = X001; then + as_expr=expr +else + as_expr=false +fi + +if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then + as_basename=basename +else + as_basename=false +fi + +if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then + as_dirname=dirname +else + as_dirname=false +fi + +as_me=`$as_basename -- "$0" || +$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \ + X"$0" : 'X\(//\)$' \| \ + X"$0" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X/"$0" | + sed '/^.*\/\([^/][^/]*\)\/*$/{ + s//\1/ + q + } + /^X\/\(\/\/\)$/{ + s//\1/ + q + } + /^X\/\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + +# Avoid depending upon Character Ranges. +as_cr_letters='abcdefghijklmnopqrstuvwxyz' +as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ' +as_cr_Letters=$as_cr_letters$as_cr_LETTERS +as_cr_digits='0123456789' +as_cr_alnum=$as_cr_Letters$as_cr_digits + +ECHO_C= ECHO_N= ECHO_T= +case `echo -n x` in #((((( +-n*) + case `echo 'xy\c'` in + *c*) ECHO_T=' ';; # ECHO_T is single tab character. + xy) ECHO_C='\c';; + *) echo `echo ksh88 bug on AIX 6.1` > /dev/null + ECHO_T=' ';; + esac;; +*) + ECHO_N='-n';; +esac + +rm -f conf$$ conf$$.exe conf$$.file +if test -d conf$$.dir; then + rm -f conf$$.dir/conf$$.file +else + rm -f conf$$.dir + mkdir conf$$.dir 2>/dev/null +fi +if (echo >conf$$.file) 2>/dev/null; then + if ln -s conf$$.file conf$$ 2>/dev/null; then + as_ln_s='ln -s' + # ... but there are two gotchas: + # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail. + # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable. + # In both cases, we have to default to `cp -pR'. + ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe || + as_ln_s='cp -pR' + elif ln conf$$.file conf$$ 2>/dev/null; then + as_ln_s=ln + else + as_ln_s='cp -pR' + fi +else + as_ln_s='cp -pR' +fi +rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file +rmdir conf$$.dir 2>/dev/null + + +# as_fn_mkdir_p +# ------------- +# Create "$as_dir" as a directory, including parents if necessary. +as_fn_mkdir_p () +{ + + case $as_dir in #( + -*) as_dir=./$as_dir;; + esac + test -d "$as_dir" || eval $as_mkdir_p || { + as_dirs= + while :; do + case $as_dir in #( + *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'( + *) as_qdir=$as_dir;; + esac + as_dirs="'$as_qdir' $as_dirs" + as_dir=`$as_dirname -- "$as_dir" || +$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$as_dir" : 'X\(//\)[^/]' \| \ + X"$as_dir" : 'X\(//\)$' \| \ + X"$as_dir" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$as_dir" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + test -d "$as_dir" && break + done + test -z "$as_dirs" || eval "mkdir $as_dirs" + } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir" + + +} # as_fn_mkdir_p +if mkdir -p . 2>/dev/null; then + as_mkdir_p='mkdir -p "$as_dir"' +else + test -d ./-p && rmdir ./-p + as_mkdir_p=false +fi + + +# as_fn_executable_p FILE +# ----------------------- +# Test if FILE is an executable regular file. +as_fn_executable_p () +{ + test -f "$1" && test -x "$1" +} # as_fn_executable_p +as_test_x='test -x' +as_executable_p=as_fn_executable_p + +# Sed expression to map a string onto a valid CPP name. +as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'" + +# Sed expression to map a string onto a valid variable name. +as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'" + + +exec 6>&1 +## ----------------------------------- ## +## Main body of $CONFIG_STATUS script. ## +## ----------------------------------- ## +_ASEOF +test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1 + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +# Save the log message, to keep $0 and so on meaningful, and to +# report actual input values of CONFIG_FILES etc. instead of their +# values after options handling. +ac_log=" +This file was extended by Xen Hypervisor $as_me 4.14, which was +generated by GNU Autoconf 2.69. Invocation command line was + + CONFIG_FILES = $CONFIG_FILES + CONFIG_HEADERS = $CONFIG_HEADERS + CONFIG_LINKS = $CONFIG_LINKS + CONFIG_COMMANDS = $CONFIG_COMMANDS + $ $0 $@ + +on `(hostname || uname -n) 2>/dev/null | sed 1q` +" + +_ACEOF + +case $ac_config_files in *" +"*) set x $ac_config_files; shift; ac_config_files=$*;; +esac + + + +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +# Files that config.status was made for. +config_files="$ac_config_files" + +_ACEOF + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +ac_cs_usage="\ +\`$as_me' instantiates files and other configuration actions +from templates according to the current configuration. Unless the files +and actions are specified as TAGs, all are instantiated by default. + +Usage: $0 [OPTION]... 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"unrecognized option: \`$1' +Try \`$0 --help' for more information." ;; + + *) as_fn_append ac_config_targets " $1" + ac_need_defaults=false ;; + + esac + shift +done + +ac_configure_extra_args= + +if $ac_cs_silent; then + exec 6>/dev/null + ac_configure_extra_args="$ac_configure_extra_args --silent" +fi + +_ACEOF +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +if \$ac_cs_recheck; then + set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion + shift + \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6 + CONFIG_SHELL='$SHELL' + export CONFIG_SHELL + exec "\$@" +fi + +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +exec 5>>config.log +{ + echo + sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX +## Running $as_me. ## +_ASBOX + $as_echo "$ac_log" +} >&5 + +_ACEOF +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +_ACEOF + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 + +# Handling of arguments. +for ac_config_target in $ac_config_targets +do + case $ac_config_target in + "config/Toplevel.mk") CONFIG_FILES="$CONFIG_FILES config/Toplevel.mk" ;; + "config/Paths.mk") CONFIG_FILES="$CONFIG_FILES config/Paths.mk" ;; + + *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;; + esac +done + + +# If the user did not use the arguments to specify the items to instantiate, +# then the envvar interface is used. Set only those that are not. +# We use the long form for the default assignment because of an extremely +# bizarre bug on SunOS 4.1.3. +if $ac_need_defaults; then + test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files +fi + +# Have a temporary directory for convenience. Make it in the build tree +# simply because there is no reason against having it here, and in addition, +# creating and moving files from /tmp can sometimes cause problems. +# Hook for its removal unless debugging. +# Note that there is a small window in which the directory will not be cleaned: +# after its creation but before its name has been assigned to `$tmp'. +$debug || +{ + tmp= ac_tmp= + trap 'exit_status=$? + : "${ac_tmp:=$tmp}" + { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status +' 0 + trap 'as_fn_exit 1' 1 2 13 15 +} +# Create a (secure) tmp directory for tmp files. + +{ + tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` && + test -d "$tmp" +} || +{ + tmp=./conf$$-$RANDOM + (umask 077 && mkdir "$tmp") +} || as_fn_error $? "cannot create a temporary directory in ." 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"could not setup config files machinery" "$LINENO" 5 +_ACEOF + +# VPATH may cause trouble with some makes, so we remove sole $(srcdir), +# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and +# trailing colons and then remove the whole line if VPATH becomes empty +# (actually we leave an empty line to preserve line numbers). +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=[ ]*/{ +h +s/// +s/^/:/ +s/[ ]*$/:/ +s/:\$(srcdir):/:/g +s/:\${srcdir}:/:/g +s/:@srcdir@:/:/g +s/^:*// +s/:*$// +x +s/\(=[ ]*\).*/\1/ +G +s/\n// +s/^[^=]*=[ ]*$// +}' +fi + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +fi # test -n "$CONFIG_FILES" + + +eval set X " :F $CONFIG_FILES " +shift +for ac_tag +do + case $ac_tag in + :[FHLC]) ac_mode=$ac_tag; continue;; + esac + case $ac_mode$ac_tag in + :[FHL]*:*);; + :L* | :C*:*) as_fn_error $? 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then + # Make the cache file name correct relative to the subdirectory. + case $cache_file in + [\\/]* | ?:[\\/]* ) ac_sub_cache_file=$cache_file ;; + *) # Relative name. + ac_sub_cache_file=$ac_top_build_prefix$cache_file ;; + esac + + { $as_echo "$as_me:${as_lineno-$LINENO}: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5 +$as_echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;} + # The eval makes quoting arguments work. + eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \ + --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" || + as_fn_error $? "$ac_sub_configure failed for $ac_dir" "$LINENO" 5 + fi + + cd "$ac_popdir" + done +fi +if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} +fi + diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000000..3aea407153 --- /dev/null +++ b/configure.ac @@ -0,0 +1,46 @@ +# -*- Autoconf -*- +# Process this file with autoconf to produce a configure script. + +AC_PREREQ([2.67]) +AC_INIT([Xen Hypervisor], m4_esyscmd([./version.sh ./xen/Makefile]), + [xen-devel@lists.xen.org], [xen], [https://www.xen.org/]) +AC_CONFIG_SRCDIR([./xen/common/kernel.c]) +AC_CONFIG_FILES([ + config/Toplevel.mk + config/Paths.mk +]) + +AC_CANONICAL_HOST + +m4_include([m4/features.m4]) +m4_include([m4/subsystem.m4]) +m4_include([m4/paths.m4]) + +AX_XEN_EXPAND_CONFIG() +AX_ARG_DEFAULT_DISABLE([githttp], [Download GIT repositories via HTTP]) + +dnl mini-os is only ported to certain platforms +case "$host_cpu" in + i[[3456]]86|x86_64) + arch_enable_stubdom=y + ;; + *) + arch_enable_stubdom=n + ;; +esac + +dnl Stubdomains need some work in order to compile on FreeBSD +case "$host_os" in + freebsd*) + arch_enable_stubdom=n + ;; +esac + +AX_SUBSYSTEM_DEFAULT_ENABLE([xen]) +AX_SUBSYSTEM_DEFAULT_ENABLE([tools]) +AX_SUBSYSTEM_CONDITIONAL([stubdom], $arch_enable_stubdom) +AX_SUBSYSTEM_DEFAULT_ENABLE([docs]) + +AX_SUBSYSTEM_FINISH + +AC_OUTPUT() diff --git a/docs/INDEX b/docs/INDEX new file mode 100644 index 0000000000..e673edd75c --- /dev/null +++ b/docs/INDEX @@ -0,0 +1,28 @@ +hypercall Hypercall Interfaces +hypercall/arm/index ARM +hypercall/x86_32/index x86_32 +hypercall/x86_64/index x86_64 + +man Man Pages + +misc Miscellaneous Documentation +misc/hvm-emulated-unplug Xen HVM emulated device unplug protocol +misc/console Xen PV Console notes +misc/xen-command-line Xen Hypervisor Command Line Options +misc/crashdb Xen crash debugger notes +misc/grant-tables A Rough Introduction to Using Grant Tables +misc/kexec_and_kdump Kexec and Kdump for Xen +misc/xenstore Xenstore protocol specification +misc/xenstore-paths Xenstore path documentation +misc/distro_mapping Distro Directory Layouts +misc/dump-core-format Xen Core Dump Format +misc/vtd VT-d HOWTO +misc/xen-error-handling Xen Error Handling +misc/xenpaging Xen Paging +misc/xsm-flask XSM/FLASK Configuration +misc/arm/booting How to boot Xen on ARM +misc/arm/early-printk Enabling early printk on ARM +misc/arm/passthrough Passthrough a device described in the Device Tree to a guest +misc/arm/device-tree/booting Device tree bindings to boot Xen +misc/arm/device-tree/passthrough Device tree binding to passthrough a device +features/dom0less.markdown Boot multiple domains from Xen in parallel diff --git a/docs/Makefile b/docs/Makefile new file mode 100644 index 0000000000..8de1efb6f5 --- /dev/null +++ b/docs/Makefile @@ -0,0 +1,244 @@ +XEN_ROOT=$(CURDIR)/.. +include $(XEN_ROOT)/Config.mk +-include $(XEN_ROOT)/config/Docs.mk + +VERSION := $(shell $(MAKE) -C $(XEN_ROOT)/xen --no-print-directory xenversion) +DATE := $(shell date +%Y-%m-%d) + +DOC_ARCHES := arm x86_32 x86_64 +MAN_SECTIONS := 1 5 7 8 + +# Documentation sources to build +MAN-SRC-y := $(sort $(basename $(wildcard man/*.pod man/*.pandoc))) + +RST-SRC-y := $(sort $(filter-out %index.rst,$(shell find * -type f -name '*.rst' -print))) + +TXTSRC-y := $(sort $(shell find misc -name '*.txt' -print)) + +PANDOCSRC-y := $(sort $(shell find designs/ features/ misc/ process/ specs/ \( -name '*.pandoc' -o -name '*.md' \) -print)) + +# Documentation targets +$(foreach i,$(MAN_SECTIONS), \ + $(eval DOC_MAN$(i) := $(patsubst man/%.$(i),man$(i)/%.$(i), \ + $(filter %.$(i),$(MAN-SRC-y))))) + +DOC_HTML := html/SUPPORT.html \ + $(patsubst %.pandoc,html/%.html,$(PANDOCSRC-y)) \ + $(patsubst %.md,html/%.html,$(PANDOCSRC-y)) \ + $(patsubst %.rst,html/%.html,$(RST-SRC-y)) \ + $(patsubst %,html/%.html,$(MAN-SRC-y)) \ + $(patsubst %.txt,html/%.txt,$(TXTSRC-y)) \ + $(patsubst %,html/hypercall/%/index.html,$(DOC_ARCHES)) +DOC_TXT := $(patsubst %.txt,txt/%.txt,$(TXTSRC-y)) \ + $(patsubst %.pandoc,txt/%.txt,$(PANDOCSRC-y)) \ + $(patsubst %.md,txt/%.txt,$(PANDOCSRC-y)) \ + $(patsubst %.rst,txt/%.txt,$(RST-SRC-y)) \ + $(patsubst %,txt/%.txt,$(MAN-SRC-y)) +DOC_PDF := $(patsubst %.pandoc,pdf/%.pdf,$(PANDOCSRC-y)) \ + $(patsubst %.md,pdf/%.pdf,$(PANDOCSRC-y)) \ + $(patsubst %.rst,pdf/%.pdf,$(RST-SRC-y)) + +# Top level build targets +.PHONY: all +all: build + +.PHONY: build +build: html txt pdf man-pages figs + +.PHONY: sphinx-html +sphinx-html: + sphinx-build -b html . sphinx/html + +.PHONY: html +html: $(DOC_HTML) html/index.html + +.PHONY: txt +txt: $(DOC_TXT) + +.PHONY: figs +figs: +ifneq ($(FIG2DEV),) + $(MAKE) -C figs +else + @echo "fig2dev (transfig) not installed; skipping figs." +endif + +.PHONY: pdf +pdf: $(DOC_PDF) + +.PHONY: clean +clean: clean-man-pages + $(MAKE) -C figs clean + rm -rf .word_count *.aux *.dvi *.bbl *.blg *.glo *.idx *~ + rm -rf *.ilg *.log *.ind *.toc *.bak *.tmp core + rm -rf html txt pdf sphinx/html + +.PHONY: distclean +distclean: clean + rm -rf $(XEN_ROOT)/config/Docs.mk config.log config.status config.cache \ + autom4te.cache + +# Top level install targets + +.PHONY: man-pages install-man-pages clean-man-pages uninstall-man-pages + +# Metarules for generating manpages. Run with $(1) substitued for section +define GENERATE_MANPAGE_RULES + +# Real manpages +man$(1)/%.$(1): man/%.$(1).pod Makefile +ifneq ($(POD2MAN),) + @$(INSTALL_DIR) $$(@D) + $(POD2MAN) --release=$(VERSION) --name=$$* -s $(1) -c "Xen" $$< $$@ +else + @echo "pod2man not installed; skipping $$@" +endif + +man$(1)/%.$(1): man/%.$(1).pandoc Makefile +ifneq ($(PANDOC),) + @$(INSTALL_DIR) $$(@D) + $(PANDOC) --standalone -V title=$$* -V section=$(1) \ + -V date="$(DATE)" -V footer="$(VERSION)" \ + -V header=Xen $$< -t man --output $$@ +else + @echo "pandoc not installed; skipping $$@" +endif + +# HTML manpages +# sed used to fix up links between man-pages +# 1) L -> L +# 2) -> +html/man/%.$(1).html: man/%.$(1).pod Makefile +ifneq ($(POD2HTML),) + @$(INSTALL_DIR) $$(@D) + sed -r -e 's%L<([^>]+)\(([1-9])\)>%L<\1(\2)|relative:\1.\2.html>%g' $$< | \ + $(POD2HTML) | \ + sed -r -e 's%( href=")relative:%\1%g' > $$@ +else + @echo "pod2html not installed; skipping $$@" +endif + +html/man/%.$(1).html: man/%.$(1).pandoc Makefile +ifneq ($(PANDOC),) + @$(INSTALL_DIR) $$(@D) + $(PANDOC) --standalone $$< -t html --toc --output $$@ +else + @echo "pandoc not installed; skipping $$@" +endif + +# Text manpages +txt/man/%.$(1).txt: man/%.$(1).pod Makefile +ifneq ($(POD2TEXT),) + @$(INSTALL_DIR) $$(@D) + $(POD2TEXT) $$< $$@ +else + @echo "pod2text not installed; skipping $$@" +endif + +txt/man/%.$(1).txt: man/%.$(1).pandoc Makefile +ifneq ($(PANDOC),) + @$(INSTALL_DIR) $$(@D) + $(PANDOC) --standalone $$< -t plain --output $$@ +else + @echo "pandoc not installed; skipping $$@" +endif + +# Build +.PHONY: man$(1)-pages +man$(1)-pages: $$(DOC_MAN$(1)) + +# Install +.PHONY: install-man$(1)-pages +install-man$(1)-pages: man$(1)-pages + $(INSTALL_DIR) $(DESTDIR)$(mandir) + cp -r man$(1) $(DESTDIR)$(mandir) + +# Clean +.PHONY: clean-man$(1)-pages +clean-man$(1)-pages: + rm -rf man$(1) + +# Uninstall +.PHONY: uninstall-man$(1)-pages +uninstall-man$(1)-pages: + rm -f $(addprefix $(DESTDIR)$(mandir)/,$(DOC_MAN$(1))) + +# Link buld/install/clean to toplevel rules +man-pages: man$(1)-pages +install-man-pages: install-man$(1)-pages +clean-man-pages: clean-man$(1)-pages +uninstall-man-pages: uninstall-man$(1)-pages + +endef + +# Generate manpage rules for each section +$(foreach i,$(MAN_SECTIONS),$(eval $(call GENERATE_MANPAGE_RULES,$(i)))) + +.PHONY: install-html +install-html: html txt figs + $(INSTALL_DIR) $(DESTDIR)$(docdir) + [ ! -d html ] || cp -R html $(DESTDIR)$(docdir) + +.PHONY: install +install: install-man-pages install-html + +.PHONY: uninstall-html +uninstall-html: + rm -rf $(DESTDIR)$(docdir) + +.PHONY: uninstall +uninstall: uninstall-man-pages uninstall-html + +# Individual file build targets +html/index.html: $(DOC_HTML) $(CURDIR)/gen-html-index INDEX + $(PERL) -w -- $(CURDIR)/gen-html-index -i INDEX html $(DOC_HTML) + +html/%.txt: %.txt + @$(INSTALL_DIR) $(@D) + $(INSTALL_DATA) $< $@ + + +# For non-x86 arches exclude the subarch whole x86 arch. +$(foreach i,$(filter-out x86_32 x86_64,$(DOC_ARCHES)),html/hypercall/$(i)/index.html): EXTRA_EXCLUDE := -X arch-x86 + +html/hypercall/%/index.html: $(CURDIR)/xen-headers Makefile + rm -rf $(@D) + $(INSTALL_DIR) $(@D) + $(PERL) -w $(CURDIR)/xen-headers -O $(@D) \ + -T 'arch-$* - Xen public headers' \ + $(patsubst %,-X arch-%,$(filter-out $*,$(DOC_ARCHES))) \ + $(patsubst %,-X xen-%,$(filter-out $*,$(DOC_ARCHES))) \ + $(EXTRA_EXCLUDE) \ + $(XEN_ROOT)/xen include/public include/xen/errno.h + +-include $(wildcard html/hypercall/*/.deps) + +txt/%.txt: %.txt + @$(INSTALL_DIR) $(@D) + $(INSTALL_DATA) $< $@ + +# Metarule for generating pandoc rules. +define GENERATE_PANDOC_RULE_RAW +$(1): $(2) +ifneq ($(PANDOC),) + @$(INSTALL_DIR) $$(@D) + $(PANDOC) --number-sections --toc --standalone $$< --output $$@ +else + @echo "pandoc not installed; skipping $$@" +endif +endef +define GENERATE_PANDOC_RULE +# $(1) is the target documentation format. $(2) is the source format. +$(call GENERATE_PANDOC_RULE_RAW,$(1)/%.$(1),%.$(2)) +endef + +$(foreach dst-fmt,pdf txt html,\ +$(foreach src-fmt,pandoc md rst,\ +$(eval $(call GENERATE_PANDOC_RULE,$(dst-fmt),$(src-fmt))))) + +$(eval $(call GENERATE_PANDOC_RULE_RAW,html/SUPPORT.html,$(XEN_ROOT)/SUPPORT.md)) + +ifeq (,$(findstring clean,$(MAKECMDGOALS))) +$(XEN_ROOT)/config/Docs.mk: + $(error You have to run ./configure before building docs) +endif diff --git a/docs/README.colo b/docs/README.colo new file mode 100644 index 0000000000..acb4ee5a0a --- /dev/null +++ b/docs/README.colo @@ -0,0 +1,9 @@ +COLO FT/HA (COarse-grain LOck-stepping Virtual Machines for Non-stop Service) +project is a high availability solution. Both primary VM (PVM) and secondary VM +(SVM) run in parallel. They receive the same request from client, and generate +response in parallel too. If the response packets from PVM and SVM are +identical, they are released immediately. Otherwise, a VM checkpoint (on demand) +is conducted. + +See the website at https://wiki.xen.org/wiki/COLO_-_Coarse_Grain_Lock_Stepping +for details. diff --git a/docs/README.remus b/docs/README.remus new file mode 100644 index 0000000000..e41e045a10 --- /dev/null +++ b/docs/README.remus @@ -0,0 +1,20 @@ +Remus provides fault tolerance for virtual machines by sending continuous +checkpoints to a backup, which will activate if the target VM fails. + +See the website at https://wiki.xen.org/wiki/Remus for details. + +Using Remus with libxl on Xen 4.5 and higher: + To enable network buffering, you need libnl 3.2.8 + or higher along with the development headers and command line utilities. + If your distro does not have the appropriate libnl3 version, you can find + the latest source tarball of libnl3 at http://www.carisma.slowglass.com/~tgr/libnl/ + +Disk replication: + VMs protected by Remus need to use DRBD based disk backends. Specifically, you + need a compile and install a custom version of DRBD, that is available publicly + at https://github.com/rshriram/remus-drbd + This code is based on DRBD 8.3.11 and uses a new replication protocol (named + protocol D) for asynchronous disk checkpoint replication. A protected VM's DRBD + disks on the primary and backup hosts need to be configured to use protocol D + as the replication protocol. An example resource configuration file can be found + in the aforementioned github repository. diff --git a/docs/README.source b/docs/README.source new file mode 100644 index 0000000000..f20fa92c28 --- /dev/null +++ b/docs/README.source @@ -0,0 +1,32 @@ +Sphinx documentation: + +All source rendered by Sphinx is licensed under CC-BY-4.0. + +You are free to: + Share: + Copy and redistribute the material in any medium or format. + Adapt: + Remix, transform, and build upon the material for any purpose, even + commercially. + +Under the following terms: + Attribution: + You must give appropriate credit, provide a link to the license, and + indicate if changes were made. You may do so in any reasonable manner, but + not in any way that suggests the licensor endorses you or your use. + No additional restrictions: + You may not apply legal terms or technological measures that legally + restrict others from doing anything the license permits. + +See https://creativecommons.org/licenses/by/4.0/ for full details. + +This includes: + * All ReStructured Text files: docs/*/*.rst + * The Sphinx configuration file: docs/conf.py + * Content in Sphinx-exclusive subdirs: docs/*-guide/* + + +Other documentation: + +There are a variety of text documents in various formats. These, given no +explicit license guidance, fall under Xen's default GPL-2.0 license. diff --git a/docs/admin-guide/index.rst b/docs/admin-guide/index.rst new file mode 100644 index 0000000000..54e6f65de3 --- /dev/null +++ b/docs/admin-guide/index.rst @@ -0,0 +1,8 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +Admin Guide +=========== + +.. toctree:: + introduction + microcode-loading diff --git a/docs/admin-guide/introduction.rst b/docs/admin-guide/introduction.rst new file mode 100644 index 0000000000..6da2758d70 --- /dev/null +++ b/docs/admin-guide/introduction.rst @@ -0,0 +1,40 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +Introduction +============ + +Xen is an open source, bare metal hypervisor. It runs as the most privileged +piece of software, and shares the resources of the hardware between virtual +machines. + +In Xen terminology, there are :term:`domains`, commonly abbreviated to +dom, which are identified by their numeric :term:`domid`. + +When Xen boots, dom0 is automatically started as well. Dom0 is a virtual +machine which, by default, is granted full permissions [1]_. A typical setup +might be: + +.. image:: xen-overview.drawio.svg + +Dom0 takes the role of :term:`control domain`, responsible for creating and +managing other virtual machines, and the role of :term:`hardware domain`, +responsible for hardware and marshalling guest I/O. + +Xen is deliberately minimal, and has no device drivers [2]_. Xen manages RAM, +schedules virtual CPUs on the available physical CPUs, and marshals +interrupts. + +Xen also provides a hypercall interface to guests, including event channels +(virtual interrupts), grant tables (shared memory), on which a lot of higher +level functionality is built. + +.. rubric:: Footnotes + +.. [1] A common misconception with Xen's architecture is that dom0 is somehow + different to other guests. The choice of id 0 is not an accident, and + follows in UNIX heritage. + +.. [2] This definition might be fuzzy. Xen can talk to common serial UARTs, + and knows how to drive various CPU internal devices such as IOMMUs, but + has no knowledge of network cards, disks, etc. All of that is the + hardware domains responsibility. diff --git a/docs/admin-guide/microcode-loading.rst b/docs/admin-guide/microcode-loading.rst new file mode 100644 index 0000000000..a07e25802f --- /dev/null +++ b/docs/admin-guide/microcode-loading.rst @@ -0,0 +1,152 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +Microcode Loading +================= + +Like many other pieces of hardware, CPUs themselves have errata which are +discovered after shipping, and need to be addressed in the field. Microcode +can be considered as firmware for the processor, and updates are published as +needed by the CPU vendors. + +Microcode is included as part of the system firmware by an OEM, and a system +firmware update is the preferred way of obtaining updated microcode. However, +this is often not the most expedient way to get updates, so Xen supports +loading microcode itself. + +Distros typically package microcode updates for users, and may provide hooks +to cause microcode to be automatically loaded at boot time. Consult your dom0 +distro guidance for microcode loading. + +Microcode can make almost arbitrary changes to the processor, including to +software visible features. This includes removing features (e.g. the Haswell +TSX errata which necessitated disabling the feature entirely), or the addition +of brand new features (e.g. the Spectre v2 controls to work around speculative +execution vulnerabilities). + + +Boot time microcode loading +--------------------------- + +Where possible, microcode should be loaded at boot time. This allows the CPU +to be updated to its eventual configuration before Xen starts making setup +decisions based on the visible features. + +Xen will report during boot if it performed a microcode update:: + + [root@host ~]# xl dmesg | grep microcode + (XEN) microcode: CPU0 updated from revision 0x1a to 0x25, date = 2018-04-02 + (XEN) microcode: CPU2 updated from revision 0x1a to 0x25, date = 2018-04-02 + (XEN) microcode: CPU4 updated from revision 0x1a to 0x25, date = 2018-04-02 + (XEN) microcode: CPU6 updated from revision 0x1a to 0x25, date = 2018-04-02 + +The exact details printed are system and microcode specific. After boot, the +current microcode version can obtained from with dom0:: + + [root@host ~]# head /proc/cpuinfo + processor : 0 + vendor_id : GenuineIntel + cpu family : 6 + model : 60 + model name : Intel(R) Xeon(R) CPU E3-1240 v3 @ 3.40GHz + stepping : 3 + microcode : 0x25 + cpu MHz : 3392.148 + cache size : 8192 KB + physical id : 0 + + +Loading microcode from a single file +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Xen handles microcode blobs in the binary form shipped by vendors, which is +also the format which the processor accepts. This format contains header +information which Xen and various userspace tools can use to identify the +correct blob for a specific CPU. + +Tools such as Dracut will identify the correct blob for the current CPU, which +will be a few kilobytes, for minimal overhead during boot. + +Additionally, Xen is capable of handling a number of blobs concatenated +together, and will locate the appropriate blob based on the header +information. + +This option is less efficient during boot, but may be preferred in situations +where the exact CPU details aren't known ahead of booting (e.g. install +media). + +The file containing the blob(s) needs to be accessible to Xen as early as +possible. + +* For multiboot/multiboot2 boots, this is achieved by loading the file as a + multiboot module. The ``ucode=$num`` command line option can be used to + identify which multiboot module contains the microcode, including negative + indexing to count from the end. + +* For EFI boots, there isn't really a concept of modules. A microcode file + can be specified in the EFI configuration file with ``ucode=$file``. Use of + this mechanism will override any ``ucode=`` settings on the command line. + + +Loading microcode from a Linux initrd +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +For systems using a Linux based dom0, it usually suffices to install the +appropriate distro package, and add ``ucode=scan`` to Xen's command line. + +Xen is compatible with the Linux initrd microcode protocol. The initrd is +expected to be generated with an uncompressed CPIO archive at the beginning +which contains contains one of these two files:: + + kernel/x86/microcode/GenuineIntel.bin + kernel/x86/microcode/AuthenticAMD.bin + +The ``ucode=scan`` command line option will cause Xen to search through all +modules to find any CPIO archives, and search the archive for the applicable +file. Xen will stop searching at the first match. + + +Runtime microcode loading +------------------------- + +.. warning:: + + If at all possible, microcode updates should be done by firmware updates, + or at boot time. Not all microcode updates (or parts thereof) can be + applied at runtime. + + Given the proprietary nature of microcode, we are unable to make any claim + that runtime microcode loading is risk-free. Any runtime microcode loading + needs adequate testing on a development instance before being rolled out to + production systems. + +The ``xen-ucode`` utility can be used to initiate a runtime microcode load:: + + [root@host ~]# xen-ucode + xen-ucode: Xen microcode updating tool + Usage: xen-ucode + [root@host ~]# + +The details of microcode blobs (if even packaged to begin with) are specific +to the dom0 distribution. Consult your dom0 OS documentation for details. +One example with a Linux dom0 on a Haswell system might look like:: + + [root@host ~]# xen-ucode /lib/firmware/intel-ucode/06-3c-03 + [root@host ~]# + +It will pass the blob to Xen, which will check to see whether the blob is +correct for the processor, and newer than the running microcode. + +If these checks pass, the entire system will be rendezvoused and an update +will be initiated on all CPUs in parallel. As with boot time loading, +diagnostics will be put out onto the console:: + + [root@host ~]# xl dmesg | grep microcode + (XEN) microcode: CPU0 updated from revision 0x1a to 0x25, date = 2018-04-02 + (XEN) microcode: CPU2 updated from revision 0x1a to 0x25, date = 2018-04-02 + (XEN) microcode: CPU4 updated from revision 0x1a to 0x25, date = 2018-04-02 + (XEN) microcode: CPU6 updated from revision 0x1a to 0x25, date = 2018-04-02 + (XEN) 4 cores are to update their microcode + (XEN) microcode: CPU0 updated from revision 0x25 to 0x27, date = 2019-02-26 + (XEN) microcode: CPU4 updated from revision 0x25 to 0x27, date = 2019-02-26 + (XEN) microcode: CPU2 updated from revision 0x25 to 0x27, date = 2019-02-26 + (XEN) microcode: CPU6 updated from revision 0x25 to 0x27, date = 2019-02-26 diff --git a/docs/admin-guide/xen-overview.drawio.svg b/docs/admin-guide/xen-overview.drawio.svg new file mode 100644 index 0000000000..f120cdf77a --- /dev/null +++ b/docs/admin-guide/xen-overview.drawio.svg @@ -0,0 +1,97 @@ + + + + + + + + Xen + + + + Dom0 + + + + DomU + + + + DomU + + + + Hardware + + + + NIC + + + + Disk + + + + Systems Services + + + + Applications + + + + Applications + + + + Kernel + + + + Net + + + + Block + + + + Kernel + + + + Kernel + + + + Net + + + + Block + + + + Net + + + + Block + + + + + + + + + + + + + + + + + diff --git a/docs/conf.py b/docs/conf.py new file mode 100644 index 0000000000..50e41501db --- /dev/null +++ b/docs/conf.py @@ -0,0 +1,194 @@ +# -*- coding: utf-8 -*- +# SPDX-License-Identifier: CC-BY-4.0 +# +# Configuration file for the Sphinx documentation builder. +# +# This file does only contain a selection of the most common options. For a +# full list see the documentation: +# http://www.sphinx-doc.org/en/master/config + +# -- Path setup -------------------------------------------------------------- + +# If extensions (or modules to document with autodoc) are in another directory, +# add these directories to sys.path here. If the directory is relative to the +# documentation root, use os.path.abspath to make it absolute, like shown here. +# +# import os +# import sys +# sys.path.insert(0, os.path.abspath('.')) + + +# -- Project information ----------------------------------------------------- + +project = u'Xen' +copyright = u'2019, The Xen development community' +author = u'The Xen development community' + +# Pull the Xen version straight out of the Makefile +try: + xen_ver = xen_subver = xen_extra = None + + for line in open(u"../xen/Makefile"): + if line.startswith(u"export XEN_VERSION"): + xen_ver = line.split(u"=")[1].strip() + elif line.startswith(u"export XEN_SUBVERSION"): + xen_subver = line.split(u"=")[1].strip() + elif line.startswith(u"export XEN_EXTRAVERSION"): + xen_extra = line.split(u"=")[1].split(u"$", 1)[0].strip() +except: + pass +finally: + if xen_ver and xen_subver and xen_extra: + version = xen_ver + u"." + xen_subver + release = version + xen_extra + else: + version = release = u"unknown version" + +# -- General configuration --------------------------------------------------- + +# If your documentation needs a minimal Sphinx version, state it here. +# +needs_sphinx = '1.4' + +# Add any Sphinx extension module names here, as strings. They can be +# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom +# ones. +extensions = [] + +# Add any paths that contain templates here, relative to this directory. +templates_path = ['_templates'] + +# The suffix(es) of source filenames. +# You can specify multiple suffix as a list of string: +# +# source_suffix = ['.rst', '.md'] +source_suffix = '.rst' + +# The master toctree document. +master_doc = 'index' + +# The language for content autogenerated by Sphinx. Refer to documentation +# for a list of supported languages. +# +# This is also used if you do content translation via gettext catalogs. +# Usually you set "language" from the command line for these cases. +language = None + +# List of patterns, relative to source directory, that match files and +# directories to ignore when looking for source files. +# This pattern also affects html_static_path and html_extra_path. +exclude_patterns = [u'sphinx/output', 'Thumbs.db', '.DS_Store'] + +# The name of the Pygments (syntax highlighting) style to use. +pygments_style = None + +primary_domain = 'c' +highlight_language = 'none' + +# -- Options for HTML output ------------------------------------------------- + +# The theme to use for HTML and HTML Help pages. See the documentation for +# a list of builtin themes. +# +try: + import sphinx_rtd_theme + html_theme = 'sphinx_rtd_theme' + html_theme_path = [sphinx_rtd_theme.get_html_theme_path()] +except ImportError: + sys.stderr.write('Warning: The Sphinx \'sphinx_rtd_theme\' HTML theme was not found. Make sure you have the theme installed to produce pretty HTML output. Falling back to the default theme.\n') + +# Theme options are theme-specific and customize the look and feel of a theme +# further. For a list of options available for each theme, see the +# documentation. +# +# html_theme_options = {} + +# Add any paths that contain custom static files (such as style sheets) here, +# relative to this directory. They are copied after the builtin static files, +# so a file named "default.css" will overwrite the builtin "default.css". +html_static_path = [] + +# Custom sidebar templates, must be a dictionary that maps document names +# to template names. +# +# The default sidebars (for documents that don't match any pattern) are +# defined by theme itself. Builtin themes are using these templates by +# default: ``['localtoc.html', 'relations.html', 'sourcelink.html', +# 'searchbox.html']``. +# +# html_sidebars = {} + + +# -- Options for HTMLHelp output --------------------------------------------- + +# Output file base name for HTML help builder. +htmlhelp_basename = 'Xendoc' + + +# -- Options for LaTeX output ------------------------------------------------ + +latex_elements = { + # The paper size ('letterpaper' or 'a4paper'). + # + # 'papersize': 'letterpaper', + + # The font size ('10pt', '11pt' or '12pt'). + # + # 'pointsize': '10pt', + + # Additional stuff for the LaTeX preamble. + # + # 'preamble': '', + + # Latex figure (float) alignment + # + # 'figure_align': 'htbp', +} + +# Grouping the document tree into LaTeX files. List of tuples +# (source start file, target name, title, +# author, documentclass [howto, manual, or own class]). +latex_documents = [ + (master_doc, 'Xen.tex', u'Xen Documentation', + u'The Xen development community', 'manual'), +] + + +# -- Options for manual page output ------------------------------------------ + +# One entry per manual page. List of tuples +# (source start file, name, description, authors, manual section). +man_pages = [ + (master_doc, 'xen', u'Xen Documentation', + [author], 1) +] + + +# -- Options for Texinfo output ---------------------------------------------- + +# Grouping the document tree into Texinfo files. List of tuples +# (source start file, target name, title, author, +# dir menu entry, description, category) +texinfo_documents = [ + (master_doc, 'Xen', u'Xen Documentation', + author, 'Xen', 'One line description of project.', + 'Miscellaneous'), +] + + +# -- Options for Epub output ------------------------------------------------- + +# Bibliographic Dublin Core info. +epub_title = project + +# The unique identifier of the text. This can be a ISBN number +# or the project homepage. +# +# epub_identifier = '' + +# A unique identification for the text. +# +# epub_uid = '' + +# A list of files that should not be packed into the epub file. +epub_exclude_files = ['search.html'] diff --git a/docs/configure b/docs/configure new file mode 100755 index 0000000000..9e3ed60462 --- /dev/null +++ b/docs/configure @@ -0,0 +1,3427 @@ +#! /bin/sh +# Guess values for system-dependent variables and create Makefiles. +# Generated by GNU Autoconf 2.69 for Xen Hypervisor Documentation 4.14. +# +# Report bugs to . +# +# +# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. +# +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +as_myself= +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +# Use a proper internal environment variable to ensure we don't fall + # into an infinite loop, continuously re-executing ourselves. + if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then + _as_can_reexec=no; export _as_can_reexec; + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +as_fn_exit 255 + fi + # We don't want this to propagate to other subprocesses. + { _as_can_reexec=; unset _as_can_reexec;} +if test "x$CONFIG_SHELL" = x; then + as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which + # is contrary to our usage. Disable this feature. + alias -g '\${1+\"\$@\"}'='\"\$@\"' + setopt NO_GLOB_SUBST +else + case \`(set -o) 2>/dev/null\` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi +" + as_required="as_fn_return () { (exit \$1); } +as_fn_success () { as_fn_return 0; } +as_fn_failure () { as_fn_return 1; } +as_fn_ret_success () { return 0; } +as_fn_ret_failure () { return 1; } + +exitcode=0 +as_fn_success || { exitcode=1; echo as_fn_success failed.; } +as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; } +as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; } +as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; } +if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then : + +else + exitcode=1; echo positional parameters were not saved. +fi +test x\$exitcode = x0 || exit 1 +test -x / || exit 1" + as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO + as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO + eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" && + test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1" + if (eval "$as_required") 2>/dev/null; then : + as_have_required=yes +else + as_have_required=no +fi + if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then : + +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +as_found=false +for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + as_found=: + case $as_dir in #( + /*) + for as_base in sh bash ksh sh5; do + # Try only shells that exist, to save several forks. + as_shell=$as_dir/$as_base + if { test -f "$as_shell" || test -f "$as_shell.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then : + CONFIG_SHELL=$as_shell as_have_required=yes + if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then : + break 2 +fi +fi + done;; + esac + as_found=false +done +$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then : + CONFIG_SHELL=$SHELL as_have_required=yes +fi; } +IFS=$as_save_IFS + + + if test "x$CONFIG_SHELL" != x; then : + export CONFIG_SHELL + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +exit 255 +fi + + if test x$as_have_required = xno; then : + $as_echo "$0: This script requires a shell more modern than all" + $as_echo "$0: the shells that I found on your system." + if test x${ZSH_VERSION+set} = xset ; then + $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should" + $as_echo "$0: be upgraded to zsh 4.3.4 or later." + else + $as_echo "$0: Please tell bug-autoconf@gnu.org and +$0: xen-devel@lists.xen.org about your system, including +$0: any error possibly output before this message. Then +$0: install a modern shell, or manually run the script +$0: under such a shell if you do have one." + fi + exit 1 +fi +fi +fi +SHELL=${CONFIG_SHELL-/bin/sh} +export SHELL +# Unset more variables known to interfere with behavior of common tools. +CLICOLOR_FORCE= GREP_OPTIONS= +unset CLICOLOR_FORCE GREP_OPTIONS + +## --------------------- ## +## M4sh Shell Functions. ## +## --------------------- ## +# as_fn_unset VAR +# --------------- +# Portably unset VAR. +as_fn_unset () +{ + { eval $1=; unset $1;} +} +as_unset=as_fn_unset + +# as_fn_set_status STATUS +# ----------------------- +# Set $? to STATUS, without forking. +as_fn_set_status () +{ + return $1 +} # as_fn_set_status + +# as_fn_exit STATUS +# ----------------- +# Exit the shell with STATUS, even in a "trap 0" or "set -e" context. +as_fn_exit () +{ + set +e + as_fn_set_status $1 + exit $1 +} # as_fn_exit + +# as_fn_mkdir_p +# ------------- +# Create "$as_dir" as a directory, including parents if necessary. +as_fn_mkdir_p () +{ + + case $as_dir in #( + -*) as_dir=./$as_dir;; + esac + test -d "$as_dir" || eval $as_mkdir_p || { + as_dirs= + while :; do + case $as_dir in #( + *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'( + *) as_qdir=$as_dir;; + esac + as_dirs="'$as_qdir' $as_dirs" + as_dir=`$as_dirname -- "$as_dir" || +$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$as_dir" : 'X\(//\)[^/]' \| \ + X"$as_dir" : 'X\(//\)$' \| \ + X"$as_dir" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$as_dir" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + test -d "$as_dir" && break + done + test -z "$as_dirs" || eval "mkdir $as_dirs" + } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir" + + +} # as_fn_mkdir_p + +# as_fn_executable_p FILE +# ----------------------- +# Test if FILE is an executable regular file. +as_fn_executable_p () +{ + test -f "$1" && test -x "$1" +} # as_fn_executable_p +# as_fn_append VAR VALUE +# ---------------------- +# Append the text in VALUE to the end of the definition contained in VAR. Take +# advantage of any shell optimizations that allow amortized linear growth over +# repeated appends, instead of the typical quadratic growth present in naive +# implementations. +if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then : + eval 'as_fn_append () + { + eval $1+=\$2 + }' +else + as_fn_append () + { + eval $1=\$$1\$2 + } +fi # as_fn_append + +# as_fn_arith ARG... +# ------------------ +# Perform arithmetic evaluation on the ARGs, and store the result in the +# global $as_val. Take advantage of shells that can avoid forks. The arguments +# must be portable across $(()) and expr. +if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then : + eval 'as_fn_arith () + { + as_val=$(( $* )) + }' +else + as_fn_arith () + { + as_val=`expr "$@" || test $? -eq 1` + } +fi # as_fn_arith + + +# as_fn_error STATUS ERROR [LINENO LOG_FD] +# ---------------------------------------- +# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are +# provided, also output the error to LOG_FD, referencing LINENO. Then exit the +# script with STATUS, using 1 if that was 0. +as_fn_error () +{ + as_status=$1; test $as_status -eq 0 && as_status=1 + if test "$4"; then + as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4 + fi + $as_echo "$as_me: error: $2" >&2 + as_fn_exit $as_status +} # as_fn_error + +if expr a : '\(a\)' >/dev/null 2>&1 && + test "X`expr 00001 : '.*\(...\)'`" = X001; then + as_expr=expr +else + as_expr=false +fi + +if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then + as_basename=basename +else + as_basename=false +fi + +if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then + as_dirname=dirname +else + as_dirname=false +fi + +as_me=`$as_basename -- "$0" || +$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \ + X"$0" : 'X\(//\)$' \| \ + X"$0" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X/"$0" | + sed '/^.*\/\([^/][^/]*\)\/*$/{ + s//\1/ + q + } + /^X\/\(\/\/\)$/{ + s//\1/ + q + } + /^X\/\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + +# Avoid depending upon Character Ranges. +as_cr_letters='abcdefghijklmnopqrstuvwxyz' +as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ' +as_cr_Letters=$as_cr_letters$as_cr_LETTERS +as_cr_digits='0123456789' +as_cr_alnum=$as_cr_Letters$as_cr_digits + + + as_lineno_1=$LINENO as_lineno_1a=$LINENO + as_lineno_2=$LINENO as_lineno_2a=$LINENO + eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" && + test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || { + # Blame Lee E. McMahon (1931-1989) for sed's syntax. :-) + sed -n ' + p + /[$]LINENO/= + ' <$as_myself | + sed ' + s/[$]LINENO.*/&-/ + t lineno + b + :lineno + N + :loop + s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/ + t loop + s/-\n.*// + ' >$as_me.lineno && + chmod +x "$as_me.lineno" || + { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; } + + # If we had to re-execute with $CONFIG_SHELL, we're ensured to have + # already done that, so ensure we don't try to do so again and fall + # in an infinite loop. This has already happened in practice. + _as_can_reexec=no; export _as_can_reexec + # Don't try to exec as it changes $[0], causing all sort of problems + # (the dirname of $[0] is not the place where we might find the + # original and so on. Autoconf is especially sensitive to this). + . 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"cannot find install-sh, install.sh, or shtool in ../ \"$srcdir\"/../" "$LINENO" 5 +fi + +# These three variables are undocumented and unsupported, +# and are intended to be withdrawn in a future Autoconf release. +# They can cause serious problems if a builder's source tree is in a directory +# whose full name contains unusual characters. +ac_config_guess="$SHELL $ac_aux_dir/config.guess" # Please don't use this var. +ac_config_sub="$SHELL $ac_aux_dir/config.sub" # Please don't use this var. +ac_configure="$SHELL $ac_aux_dir/configure" # Please don't use this var. + + + +# M4 Macro includes + + + + + + + + + + + + + + +case "$host_os" in +*freebsd*) XENSTORED_KVA=/dev/xen/xenstored ;; +*) XENSTORED_KVA=/proc/xen/xsd_kva ;; +esac + + +case "$host_os" in +*freebsd*) XENSTORED_PORT=/dev/xen/xenstored ;; +*) XENSTORED_PORT=/proc/xen/xsd_port ;; +esac + + + + +test "x$prefix" = "xNONE" && prefix=$ac_default_prefix +test "x$exec_prefix" = "xNONE" && exec_prefix=${prefix} + +if test "$localstatedir" = '${prefix}/var' ; then + localstatedir=/var +fi + +bindir=`eval echo $bindir` +sbindir=`eval echo $sbindir` +libdir=`eval echo $libdir` + +if test "x$sysconfdir" = 'x${prefix}/etc' ; then + case "$host_os" in + *freebsd*) + sysconfdir=$prefix/etc + ;; + *solaris*) + if test "$prefix" = "/usr" ; then + sysconfdir=/etc + else + sysconfdir=$prefix/etc + fi + ;; + *) + sysconfdir=/etc + ;; + esac +fi + + +# Check whether --with-initddir was given. +if test "${with_initddir+set}" = set; then : + withval=$with_initddir; initddir_path=$withval +else + case "$host_os" in + *linux*) + if test -d $sysconfdir/rc.d/init.d ; then + initddir_path=$sysconfdir/rc.d/init.d + else + initddir_path=$sysconfdir/init.d + fi + ;; + *) + initddir_path=$sysconfdir/rc.d + ;; + esac +fi + + + +# Check whether --with-sysconfig-leaf-dir was given. +if test "${with_sysconfig_leaf_dir+set}" = set; then : + withval=$with_sysconfig_leaf_dir; config_leaf_dir=$withval +else + config_leaf_dir=sysconfig + if test ! -d /etc/sysconfig ; then config_leaf_dir=default ; fi +fi + +CONFIG_LEAF_DIR=$config_leaf_dir + + + +# Check whether --with-libexec-leaf-dir was given. +if test "${with_libexec_leaf_dir+set}" = set; then : + withval=$with_libexec_leaf_dir; libexec_subdir=$withval +else + libexec_subdir=$PACKAGE_TARNAME +fi + + + +# Check whether --with-xen-dumpdir was given. +if test "${with_xen_dumpdir+set}" = set; then : + withval=$with_xen_dumpdir; xen_dumpdir_path=$withval +else + xen_dumpdir_path=$localstatedir/lib/xen/dump +fi + + + +# Check whether --with-rundir was given. +if test "${with_rundir+set}" = set; then : + withval=$with_rundir; rundir_path=$withval +else + rundir_path=$localstatedir/run +fi + + + +# Check whether --with-debugdir was given. +if test "${with_debugdir+set}" = set; then : + withval=$with_debugdir; debugdir_path=$withval +else + debugdir_path=$prefix/lib/debug +fi + + +if test "$libexecdir" = '${exec_prefix}/libexec' ; then + case "$host_os" in + *netbsd*) ;; + *) + libexecdir='${exec_prefix}/lib' + ;; + esac +fi +LIBEXEC=`eval echo $libexecdir/$libexec_subdir` + + +LIBEXEC_BIN=${LIBEXEC}/bin + +LIBEXEC_LIB=${LIBEXEC}/lib + +LIBEXEC_INC=${LIBEXEC}/include + +XENFIRMWAREDIR=${LIBEXEC}/boot + + +XEN_RUN_DIR=$rundir_path/xen + + +XEN_LOG_DIR=$localstatedir/log/xen + + +XEN_LIB_STORED=$localstatedir/lib/xenstored + + +XEN_RUN_STORED=$rundir_path/xenstored + + +XEN_LIB_DIR=$localstatedir/lib/xen + + +SHAREDIR=$prefix/share + + +CONFIG_DIR=$sysconfdir + + +INITD_DIR=$initddir_path + + +XEN_CONFIG_DIR=$CONFIG_DIR/xen + + +XEN_SCRIPT_DIR=$XEN_CONFIG_DIR/scripts + + +case "$host_os" in +*freebsd*) XEN_LOCK_DIR=$localstatedir/lib ;; +*netbsd*) XEN_LOCK_DIR=$localstatedir/lib ;; +*) XEN_LOCK_DIR=$localstatedir/lock ;; +esac + + +XEN_PAGING_DIR=$localstatedir/lib/xen/xenpaging + + +XEN_DUMP_DIR=$xen_dumpdir_path + + +DEBUG_DIR=$debugdir_path + + + + + + # Extract the first word of "fig2dev", so it can be a program name with args. +set dummy fig2dev; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_FIG2DEV+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $FIG2DEV in + [\\/]* | ?:[\\/]*) + ac_cv_path_FIG2DEV="$FIG2DEV" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_FIG2DEV="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +FIG2DEV=$ac_cv_path_FIG2DEV +if test -n "$FIG2DEV"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $FIG2DEV" >&5 +$as_echo "$FIG2DEV" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + if ! test -x "$ac_cv_path_FIG2DEV"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: fig2dev is not available so some documentation won't be built" >&5 +$as_echo "$as_me: WARNING: fig2dev is not available so some documentation won't be built" >&2;} + +fi + + + + # Extract the first word of "pod2man", so it can be a program name with args. +set dummy pod2man; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_POD2MAN+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $POD2MAN in + [\\/]* | ?:[\\/]*) + ac_cv_path_POD2MAN="$POD2MAN" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_POD2MAN="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +POD2MAN=$ac_cv_path_POD2MAN +if test -n "$POD2MAN"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $POD2MAN" >&5 +$as_echo "$POD2MAN" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + if ! test -x "$ac_cv_path_POD2MAN"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: pod2man is not available so some documentation won't be built" >&5 +$as_echo "$as_me: WARNING: pod2man is not available so some documentation won't be built" >&2;} + +fi + + + + # Extract the first word of "pod2html", so it can be a program name with args. +set dummy pod2html; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_POD2HTML+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $POD2HTML in + [\\/]* | ?:[\\/]*) + ac_cv_path_POD2HTML="$POD2HTML" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_POD2HTML="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +POD2HTML=$ac_cv_path_POD2HTML +if test -n "$POD2HTML"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $POD2HTML" >&5 +$as_echo "$POD2HTML" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + if ! test -x "$ac_cv_path_POD2HTML"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: pod2html is not available so some documentation won't be built" >&5 +$as_echo "$as_me: WARNING: pod2html is not available so some documentation won't be built" >&2;} + +fi + + + + # Extract the first word of "pod2text", so it can be a program name with args. +set dummy pod2text; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_POD2TEXT+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $POD2TEXT in + [\\/]* | ?:[\\/]*) + ac_cv_path_POD2TEXT="$POD2TEXT" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_POD2TEXT="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +POD2TEXT=$ac_cv_path_POD2TEXT +if test -n "$POD2TEXT"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $POD2TEXT" >&5 +$as_echo "$POD2TEXT" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + if ! test -x "$ac_cv_path_POD2TEXT"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: pod2text is not available so some documentation won't be built" >&5 +$as_echo "$as_me: WARNING: pod2text is not available so some documentation won't be built" >&2;} + +fi + + + + # Extract the first word of "pandoc", so it can be a program name with args. +set dummy pandoc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_PANDOC+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $PANDOC in + [\\/]* | ?:[\\/]*) + ac_cv_path_PANDOC="$PANDOC" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_PANDOC="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +PANDOC=$ac_cv_path_PANDOC +if test -n "$PANDOC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PANDOC" >&5 +$as_echo "$PANDOC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + if ! test -x "$ac_cv_path_PANDOC"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: pandoc is not available so some documentation won't be built" >&5 +$as_echo "$as_me: WARNING: pandoc is not available so some documentation won't be built" >&2;} + +fi + + + +# Extract the first word of "perl", so it can be a program name with args. +set dummy perl; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_PERL+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $PERL in + [\\/]* | ?:[\\/]*) + ac_cv_path_PERL="$PERL" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_PERL="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + test -z "$ac_cv_path_PERL" && ac_cv_path_PERL="no" + ;; +esac +fi +PERL=$ac_cv_path_PERL +if test -n "$PERL"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PERL" >&5 +$as_echo "$PERL" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +if test x"${PERL}" = x"no" +then + as_fn_error $? "Unable to find perl, please install perl" "$LINENO" 5 +fi + +cat >confcache <<\_ACEOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs, see configure's option --config-cache. +# It is not useful on other systems. If it contains results you don't +# want to keep, you may remove or edit it. +# +# config.status only pays attention to the cache file if you give it +# the --recheck option to rerun configure. +# +# `ac_cv_env_foo' variables (set or unset) will be overridden when +# loading this file, other *unset* `ac_cv_foo' will be assigned the +# following values. + +_ACEOF + +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, we kill variables containing newlines. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +( + for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do + eval ac_val=\$$ac_var + case $ac_val in #( + *${as_nl}*) + case $ac_var in #( + *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5 +$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;; + esac + case $ac_var in #( + _ | IFS | as_nl) ;; #( + BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #( + *) { eval $ac_var=; unset $ac_var;} ;; + esac ;; + esac + done + + (set) 2>&1 | + case $as_nl`(ac_space=' '; set) 2>&1` in #( + *${as_nl}ac_space=\ *) + # `set' does not quote correctly, so add quotes: double-quote + # substitution turns \\\\ into \\, and sed turns \\ into \. + sed -n \ + "s/'/'\\\\''/g; + s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p" + ;; #( + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p" + ;; + esac | + sort +) | + sed ' + /^ac_cv_env_/b end + t clear + :clear + s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/ + t end + s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/ + :end' >>confcache +if diff "$cache_file" confcache >/dev/null 2>&1; then :; else + if test -w "$cache_file"; then + if test "x$cache_file" != "x/dev/null"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5 +$as_echo "$as_me: updating cache $cache_file" >&6;} + if test ! -f "$cache_file" || test -h "$cache_file"; then + cat confcache >"$cache_file" + else + case $cache_file in #( + */* | ?:*) + mv -f confcache "$cache_file"$$ && + mv -f "$cache_file"$$ "$cache_file" ;; #( + *) + mv -f confcache "$cache_file" ;; + esac + fi + fi + else + { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5 +$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;} + fi +fi +rm -f confcache + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +# Transform confdefs.h into DEFS. +# Protect against shell expansion while executing Makefile rules. +# Protect against Makefile macro expansion. +# +# If the first sed substitution is executed (which looks for macros that +# take arguments), then branch to the quote section. Otherwise, +# look for a macro that doesn't take arguments. +ac_script=' +:mline +/\\$/{ + N + s,\\\n,, + b mline +} +t clear +:clear +s/^[ ]*#[ ]*define[ ][ ]*\([^ (][^ (]*([^)]*)\)[ ]*\(.*\)/-D\1=\2/g +t quote +s/^[ ]*#[ ]*define[ ][ ]*\([^ ][^ ]*\)[ ]*\(.*\)/-D\1=\2/g +t quote +b any +:quote +s/[ `~#$^&*(){}\\|;'\''"<>?]/\\&/g +s/\[/\\&/g +s/\]/\\&/g +s/\$/$$/g +H +:any +${ + g + s/^\n// + s/\n/ /g + p +} +' +DEFS=`sed -n "$ac_script" confdefs.h` + + +ac_libobjs= +ac_ltlibobjs= +U= +for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue + # 1. Remove the extension, and $U if already installed. + ac_script='s/\$U\././;s/\.o$//;s/\.obj$//' + ac_i=`$as_echo "$ac_i" | sed "$ac_script"` + # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR + # will be set to the directory where LIBOBJS objects are built. + as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext" + as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo' +done +LIBOBJS=$ac_libobjs + +LTLIBOBJS=$ac_ltlibobjs + + + +: "${CONFIG_STATUS=./config.status}" +ac_write_fail=0 +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files $CONFIG_STATUS" +{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5 +$as_echo "$as_me: creating $CONFIG_STATUS" >&6;} +as_write_fail=0 +cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1 +#! $SHELL +# Generated by $as_me. +# Run this file to recreate the current configuration. +# Compiler output produced by configure, useful for debugging +# configure, is in config.log if it exists. + +debug=false +ac_cs_recheck=false +ac_cs_silent=false + +SHELL=\${CONFIG_SHELL-$SHELL} +export SHELL +_ASEOF +cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1 +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. 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"cannot create directory $as_dir" + + +} # as_fn_mkdir_p +if mkdir -p . 2>/dev/null; then + as_mkdir_p='mkdir -p "$as_dir"' +else + test -d ./-p && rmdir ./-p + as_mkdir_p=false +fi + + +# as_fn_executable_p FILE +# ----------------------- +# Test if FILE is an executable regular file. +as_fn_executable_p () +{ + test -f "$1" && test -x "$1" +} # as_fn_executable_p +as_test_x='test -x' +as_executable_p=as_fn_executable_p + +# Sed expression to map a string onto a valid CPP name. +as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'" + +# Sed expression to map a string onto a valid variable name. +as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'" + + +exec 6>&1 +## ----------------------------------- ## +## Main body of $CONFIG_STATUS script. ## +## ----------------------------------- ## +_ASEOF +test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1 + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +# Save the log message, to keep $0 and so on meaningful, and to +# report actual input values of CONFIG_FILES etc. instead of their +# values after options handling. +ac_log=" +This file was extended by Xen Hypervisor Documentation $as_me 4.14, which was +generated by GNU Autoconf 2.69. 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"could not create $ac_file" "$LINENO" 5 + +test -z "$ac_datarootdir_hack$ac_datarootdir_seen" && + { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } && + { ac_out=`sed -n '/^[ ]*datarootdir[ ]*:*=/p' \ + "$ac_tmp/out"`; test -z "$ac_out"; } && + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir' +which seems to be undefined. Please make sure it is defined" >&5 +$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir' +which seems to be undefined. Please make sure it is defined" >&2;} + + rm -f "$ac_tmp/stdin" + case $ac_file in + -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";; + *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";; + esac \ + || as_fn_error $? "could not create $ac_file" "$LINENO" 5 + ;; + + + + esac + +done # for ac_tag + + +as_fn_exit 0 +_ACEOF +ac_clean_files=$ac_clean_files_save + +test $ac_write_fail = 0 || + as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5 + + +# configure is writing to config.log, and then calls config.status. +# config.status does its own redirection, appending to config.log. +# Unfortunately, on DOS this fails, as config.log is still kept open +# by configure, so config.status won't be able to write to it; its +# output is simply discarded. So we exec the FD to /dev/null, +# effectively closing config.log, so it can be properly (re)opened and +# appended to by config.status. When coming back to configure, we +# need to make the FD available again. +if test "$no_create" != yes; then + ac_cs_success=: + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false + exec 5>>config.log + # Use ||, not &&, to avoid exiting from the if with $? = 1, which + # would make configure fail if this is the last instruction. + $ac_cs_success || as_fn_exit 1 +fi +if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} +fi + diff --git a/docs/configure.ac b/docs/configure.ac new file mode 100644 index 0000000000..cb5a6eaa4c --- /dev/null +++ b/docs/configure.ac @@ -0,0 +1,32 @@ +# -*- Autoconf -*- +# Process this file with autoconf to produce a configure script. + +AC_PREREQ([2.67]) +AC_INIT([Xen Hypervisor Documentation], m4_esyscmd([../version.sh ../xen/Makefile]), + [xen-devel@lists.xen.org], [xen], [https://www.xen.org/]) +AC_CONFIG_SRCDIR([misc/xen-command-line.pandoc]) +AC_CONFIG_FILES([ +../config/Docs.mk +man/xl.cfg.5.pod +man/xl.1.pod +]) +AC_CONFIG_AUX_DIR([../]) + +# M4 Macro includes +m4_include([../m4/docs_tool.m4]) +m4_include([../m4/path_or_fail.m4]) +m4_include([../m4/features.m4]) +m4_include([../m4/paths.m4]) + +AX_XEN_EXPAND_CONFIG() + +AX_DOCS_TOOL_PROG([FIG2DEV], [fig2dev]) +AX_DOCS_TOOL_PROG([POD2MAN], [pod2man]) +AX_DOCS_TOOL_PROG([POD2HTML], [pod2html]) +AX_DOCS_TOOL_PROG([POD2TEXT], [pod2text]) +AX_DOCS_TOOL_PROG([PANDOC], [pandoc]) + +AC_ARG_VAR([PERL], [Path to Perl parser]) +AX_PATH_PROG_OR_FAIL([PERL], [perl]) + +AC_OUTPUT() diff --git a/docs/designs/argo.pandoc b/docs/designs/argo.pandoc new file mode 100644 index 0000000000..2ce253b654 --- /dev/null +++ b/docs/designs/argo.pandoc @@ -0,0 +1,448 @@ +# Argo + +## Introduction + +Argo is an interdomain communication mechanism. It provides Xen hypervisor +primitives to transmit data between VMs, by performing data copies into +receive memory rings registered by domains. It does not require memory +sharing between VMs and does not use the grant tables or Xenstore. + +Argo has requirements for performance isolation between domains, to prevent +negative performance impact from malicious or disruptive activity of other +domains, or even other VCPUs of the same domain operating other rings. + +## Hypervisor-Mediated data eXchange (HMX) + +This term references inter-VM communication protocols that have this +key architectural point: The hypervisor is responsible for performing the +write of data into the guest-accessible memory buffer, in the manner +according to the agreed transfer protocol. This structure ensures that +there is strength to the transport mechanism, because the transmitting side +of the communication is the hypervisor, which can be trusted by the receiver, +and the buffer is isolated from access by any other potential sources +outside the receiver. + +The receiver can trust that the hypervisor will: + +- Provide a protocol implementation adhering to hardware synchronization +requirements for concurrent access to system memory by communicating +components +- Deliver data only from an approved source, enforcing policy for Mandatory +Access Control. +- Indicate the correct sender of the data. +- Transmit only the intended data, adhering to the access protocol of the data +structure in the buffer. If the memory region is being used as a ring, then: + - Data writes will only occur within the ring region that is indicated as + available for incoming data by the ring indexes. + - The indicated length of data written will exactly match the length of + data actually written. + - The write for each piece of data will occur only once. + - Data will be written sequentially in the order that it is sent. +- Issue notification of data delivered correctly. + +This structure allows for augmentation by the hypervisor to identify the +sending entity within the source VM, and then provide the receiver with +assured context information about the data source. This enables the receiver +to make decisions based on fine-grained knowledge of the source of the data. + +This structure is also of strong interest for nested virtualization: +transport via the hypervisor can enable construction of efficient +communications between VMs at different levels of nesting. + +# Locking + +Since Argo operates a data path between domains, sections of this code are +*hot* when the communication paths are in use. To encourage high performance, a +goal is to limit mutual exclusion to only where required and enable significant +concurrency. + +Avoidance of deadlock is essential and since state must frequently be updated +that pertains to more than one domain, a locking protocol defines which locks +are needed and the order of their acquistion. + +## Structure + +The granular locking structure of Argo enables: + +1. Performance isolation of guests +2. Avoidance of DoS of rings by domains that are not authorized to send to them +3. Deadlock-free teardown of state across multiple domains on domain destroy +4. Performance of guests using Argo with concurrent operation of rings. + +Argo uses three per-domain locks to protect three separate data structures. +Access to the ring_hash data structure is confined to domains that a +ring-registering domain has authorized to send data via the ring. The complete +set of Argo locks is: + +* Global : `L1_global_argo_rwlock` +* Per-domain: `rings_L2_rwlock` +* Per-domain: `send_L2_lock` +* Per-domain: `wildcard_L2_lock` +* Per-ring: `L3_lock` + +## Protected State + +The data structures being protected by the locks are all per-domain. The only +global Argo state is the `L1_global_argo_rwlock` used to coordinate access to +data structures of other domains. + +### State: Rings registered and owned by a domain + +This includes the state to run that ring, such as memory frame numbers and +established mappings. Per-ring state is protected by its own lock, so that +multiple VCPUs of the same domain operating different rings do not inhibit the +performance of each other. + +The per-domain ring state also includes the list of pending notifications for +other domains that are waiting for ring space availability. + +### State: Partner rings for which this domain is the single allowed sender + +This state belonging to the permitted sender is written to when a ring is +registered by another domain. The lock that protects this state is subject to +locking at arbitrary frequency by those foreign domains when registering rings +-- which do not need any permission granted by this domain in order to register +a ring to communicate with it -- so it must not inhibit the domain's own +ability to use its own rings, to protect them from DoS. For this reason, this +state is protected by its own lock. + +### State: Pending notifications for wildcard rings registered by other domains + +This data structure is needed when a domain is destroyed, to cancel the +outstanding space availability notifications about the wildcard rings of other +domains that this domain has queried. + +Data is entered into this data structure by the domain that owns it, either by +a space-inhibited sendv or a notify operation. + +Data is removed from this data structure in one of three cases: when space +becomes available in the destination ring and the notification is sent, when +the ring is torn down, or when the awaiting domain is destroyed. + +In the case where a notification is sent, access to the data structure is +triggered by the ring owner domain, rather than the domain waiting for +notification. This data structure is protected by its own lock since doing so +entails less contention than the alternative of reusing an existing lock owned +by the domain. + +## Hierarchical Locking Model and Protocol + +The locking discipline within the Argo code is heirarchical and utilizes +reader/writer locks to enable increased concurrency when operations do not +conflict. None of the Argo locks are reentrant. + +The hierarchy: + +* There is a global rwlock (`L1`) to protect access to all of the per-domain +argo data structures. +* There is a rwlock per-domain (`rings_L2`) to protect the hashtable of the +per-ring data structures. +* There is a lock per ring (`L3`) to protect the per-ring data structure, +`struct argo_ring_info`. + +There are a two other per-domain L2 locks; their operation is similar and they +are described later. + +The protocol to safely acquire write access to the per-ring data structure, +`struct argo_ring_info`, is: + +1) Acquire a Read lock on L1. +2) Acquire a Read lock on L2. +3) Acquire L3. + +An alternative valid sequence is: + +1) Acquire a Read lock on L1. +2) Acquire a Write lock on L2. + +This second sequence grants write access to _all_ of the `argo_ring_info` +structs belonging to the domain, but at the expense of less concurrency: no +other operation can access those structs while the locks are held, which will +inhibit operations on those rings until the locks are released. + +Another alternative valid sequence is: + +1) Acquire a Write lock on L1. + +This grants write access to _all_ of the `argo_ring_info` structs belonging to +_all domains_, but again at the expense of far less concurrency: no other +operation can operate on Argo rings until the locks are released. + +## Lock Definitions + +The full set of locks that are directly operated upon by the Argo code are +described in the following section. + +### The global singleton lock: + +* `L1_global_argo_rwlock` + +The rationale for having a global lock is to be able to enforce system-wide +exclusion for a critical region and simplify the logic required to avoid +deadlock, for teardown of state across multiple domains when a domain is +destroyed. + +The majority of operations take a read-lock on this lock, allowing concurrent +Argo operations by many domains. + +The pointer d->argo on every domain is protected by this lock. A set of more +granular per-domain locks could be used to do that, but since domain start and +stop is expected to be a far less frequent operation than the other argo +operations, acquiring a single read lock to enable access to all the argo +structs of all domains simplifies the protocol. + +Points of write-locking on this lock: + +* `argo_destroy`, where: + * All of the domain's own rings are destroyed. + * All of the notifications pending for other domains are cancelled. + * All of the unicast partner rings owned by other domains for this domain to +send to, are destroyed. + * All of the notifications pending on those rings are cancelled. + * All of the notifications pending for this domain on wildcard rings owned +by other domains are cancelled. +* `argo_soft_reset`, for similar teardown operations as argo_destroy. +* `argo_init`, where the `d->argo` pointer is first populated. + * Since the write lock is taken here, there is serialization all concurrent +Argo operations around this single pointer write; this is the cost of using the +simpler one global lock approach. + +Enforcing that the write_lock is acquired on `L1_global_argo_rwlock` before +executing teardown, ensures that no teardown operations act concurrently and no +other Argo operations happen concurrently with a teardown. The teardown logic +is free to safely modify the Argo state across all domains without having to +acquire per-domain locks and deadlock cannot occur. + +### Per-Domain: Ring hash lock + +`rings_L2_rwlock` + +Protects: the per-domain ring hash table of `argo_ring_info` structs. + +Holding a read lock on `rings_L2` protects the ring hash table and the elements +in the hash table `d->argo->ring_hash`, and the `node` and `id` fields in +struct `argo_ring_info` in the hash table. + +Holding a write lock on `rings_L2` protects all of the elements of all the +struct `argo_ring_info` belonging to this domain. + +To take `rings_L2` you must already have `R(L1)`. `W(L1)` implies `W(rings_L2)` +and `L3`. + +Prerequisites: + +* `R(L1_global_argo_rwlock)` must be acquired before taking either read or +write on `rings_L2_rwlock`. +* `W(L1_global_argo_rwlock)` implies `W(rings_L2_rwlock)`, so if +`W(L1_global_argo_rwlock)` is held, then `rings_L2_rwlock` does not need to be +acquired, and all the data structures that `rings_L2_rwlock` protects can be +accessed as if `W(ring_L2_rwlock)` was held. + +Is accessed by the hypervisor on behalf of: + +* The domain that registered the ring. +* Any domain that is allowed to send to the ring -- so that's the partner +domain, for unicast rings, or any domain, for wildcard rings. + +### Send hash lock + +`send_L2_lock` + +Protects: the per-domain send hash table of `argo_send_info` structs. + +Is accessed by the hypervisor on behalf of: + +* Any domain that registers a ring that specifies the domain as the unicast +sender. +* The domain that has been allowed to send, as part of teardown when the domain +is being destroyed. + + +### Wildcard pending list lock + +`wildcard_L2_lock` + +Protects: the per-domain list of pending notifications to the domain from +wildcard rings owned by other domains. + +Is accessed by the hypervisor on behalf of: + +* The domain that issued a query to another about space availability in one of +its wildcard rings - this can be done by attempting a send operation when there +is insufficient ring space available at the time. +* Any domain that the domain has issued a query to about space availability in +one of their wildcard rings. + +### Per-Ring locks: + +* `L3_lock` + +This lock protects the members of a `struct ring_info` which is the primary +state for a domain's own registered ring. + + +## Reasoning Model + +A common model for reasoning about concurrent code focusses on accesses to +individual variables: if code touches this variable, see that it first acquires +the corresponding lock and then drops it afterwards. A challenge with this +model is in ensuring that the sequence of locks acquired within nested +functions, when operating on data from multiple domains with concurrent +operations, is safe from deadlock. + +An alternative method that is better suited to the Argo software is to consider +the execution path, the full sequence of locks acquired, accesses performed, +and locks released, from entering an operation, to the completion of the work. + +An example code path for an operation: + +`[entry] > -- [ take R(L1) ] -- [ take R(L2) ] -- loop [ take a L3 / drop L3 ] +-- [ drop R(L2) ] -- [ drop R(L1)] -- > [exit]` + +If a function implements a section of the path, it is important to know not +only what variables the function itself operates upon, but also the locking +state that will already have been established at the point when the function is +invoked, since this will affect what data the function can access. For this +reason, comments in the code, or ASSERTs that explicitly check lock state, +communicate what the locking state is expected and intended to be when that +code is invoked. See the macros defined to support this for Argo later in this +document. + + +## Macros to Validate and Document Lock State + +These macros encode the logic to verify that the locking has adhered to the +locking discipline. + +eg. On entry to logic that requires holding at least `R(rings_L2)`, this: + +`ASSERT(LOCKING_Read_rings_L2(d));` + +checks that the lock state is sufficient, validating that one of the following +must be true when executed: + +`R(rings_L2) && R(L1)` +or: `W(rings_L2) && R(L1)` +or: `W(L1)` + +The macros are defined thus: + +``` +#define LOCKING_Write_L1 (rw_is_write_locked(&L1_global_argo_rwlock)) +/* + * While LOCKING_Read_L1 will return true even if the lock is write-locked, + * that's OK because everywhere that a Read lock is needed with these macros, + * holding a Write lock there instead is OK too: we're checking that _at least_ + * the specified level of locks are held. + */ +#define LOCKING_Read_L1 (rw_is_locked(&L1_global_argo_rwlock)) + +#define LOCKING_Write_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_write_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_rings_L2(d) within this LOCKING_Read_rings_L2 + * definition because the first clause that is testing R(L1) && R(L2) will also + * return true if R(L1) && W(L2) is true, because of the way that rw_is_locked + * behaves. This results in a slightly shorter and faster implementation. + */ +#define LOCKING_Read_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_L1 within this LOCKING_L3 definition because + * LOCKING_Write_rings_L2(d) will return true for that condition. + */ +#define LOCKING_L3(d, r) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock) \ + && spin_is_locked(&(r)->L3_lock)) || LOCKING_Write_rings_L2(d)) + +#define LOCKING_send_L2(d) \ + ((LOCKING_Read_L1 && spin_is_locked(&(d)->argo->send_L2_lock)) || \ + LOCKING_Write_L1) +``` + +Here is an example of a macro in use: + +``` +static void +notify_ring(const struct domain *d, struct argo_ring_info *ring_info, + struct hlist_head *to_notify) +{ + uint32_t space; + + ASSERT(LOCKING_Read_rings_L2(d)); + + spin_lock(&ring_info->L3_lock); + + if ( ring_info->len ) + space = ringbuf_payload_space(d, ring_info); + else + space = 0; + + spin_unlock(&ring_info->L3_lock); + + if ( space ) + pending_find(d, ring_info, space, to_notify); +} + +``` + +In the above example, it can be seen that it is safe to acquire the `L3` lock +because _at least_ `R(rings_L2)` is already held, as documented and verified by +the macro. + +## FAQ / Other Considerations + +### Why not have a single per-domain lock? + +Due to performance isolation / DoS avoidance: if there is a single per-domain +lock, acquiring this lock will stall operations on other active rings owned by +the domain. A malicious domain can loop registering and unregistering rings, +without any consent by the targetted domain, which would experience decreased +throughput due to the contention on the single per-domain lock. The granular +locking structure of Argo prevents this. It also allows concurrent operation of +different rings by multiple VCPUs of the same domain without contention, to +avoid negative application performance interaction. + +## Rationale for Using a Singleton Global Lock: L1 + +### Teardown on domain destroy + +The single global lock enables exclusive access to the argo data structures +across domains when a domain is destroyed. Every unicast ring that the dying +domain is the authorized sender is torn down and any pending space-available +notifications in other domain's wildcard rings are cancelled. This requires +gaining safe access to the data structures on each of the domains involved. + +The 'send hashtable' data structure is needed in order to perform the teardown +of rings when a domain is destroyed. To populate it, whenever a unicast ring is +registered, the lock that protects that data structure must be taken +exclusively. + +There are granular per-domain locks which protect the per-domain data +structures. The global singleton L1 lock operates with-and-above the per-domain +locks and is used to obtain exclusive access to multiple domain's argo data +structures in the infrequent case where it is used -- for domain destroy -- +whilst otherwise allowing concurrent access, via acquiring it with 'read' +access, for the majority of the time. + +To perform the required state teardown on domain destruction, which can require +removing state from the data structures of multiple domains, a locking protocol +to obtain mutual exclusion and safe access to the state is required, without +deadlocking. + +Using the single global lock avoids the need for sequencing the acquisition of +multiple individual per-domain locks (and lower level data structure locks) to +prevent deadlock: taking W(L1) grants access to all and taking R(L1) ensures +that teardown of any domain will not interfere with any Argo hypercall +operation. It enables introducing granular locking without complex or +error-prone lock acquisition logic. + +# Future Work + +- Performance measurement and optimization +- Provide assurance of connection source context to destination +- Policy controls for reducing the duration of hypervisor mappings of +transmission rings, to improve resistance to data read attacks on +hypervisor memory diff --git a/docs/designs/dmop.pandoc b/docs/designs/dmop.pandoc new file mode 100644 index 0000000000..8e9f95af47 --- /dev/null +++ b/docs/designs/dmop.pandoc @@ -0,0 +1,175 @@ +DMOP +==== + +Introduction +------------ + +The aim of DMOP is to prevent a compromised device model from compromising +domains other than the one it is providing emulation for (which is therefore +likely already compromised). + +The problem occurs when you a device model issues an hypercall that +includes references to user memory other than the operation structure +itself, such as with Track dirty VRAM (as used in VGA emulation). +Is this case, the address of this other user memory needs to be vetted, +to ensure it is not within restricted address ranges, such as kernel +memory. The real problem comes down to how you would vet this address - +the idea place to do this is within the privcmd driver, without privcmd +having to have specific knowledge of the hypercall's semantics. + +The Design +---------- + +The privcmd driver implements a new restriction ioctl, which takes a domid +parameter. After that restriction ioctl is issued, all unaudited operations +on the privcmd driver will cease to function, including regular hypercalls. +DMOP hypercalls will continue to function as they can be audited. + +A DMOP hypercall consists of a domid (which is audited to verify that it +matches any restriction in place) and an array of buffers and lengths, +with the first one containing the specific DMOP parameters. These can +then reference further buffers from within in the array. Since the only +user buffers passed are that found with that array, they can all can be +audited by privcmd. + +The following code illustrates this idea: + +struct xen_dm_op { + uint32_t op; +}; + +struct xen_dm_op_buf { + XEN_GUEST_HANDLE(void) h; + unsigned long size; +}; +typedef struct xen_dm_op_buf xen_dm_op_buf_t; + +enum neg_errnoval +HYPERVISOR_dm_op(domid_t domid, + xen_dm_op_buf_t bufs[], + unsigned int nr_bufs) + +@domid is the domain the hypercall operates on. +@bufs points to an array of buffers where @bufs[0] contains a struct +dm_op, describing the specific device model operation and its parameters. +@bufs[1..] may be referenced in the parameters for the purposes of +passing extra information to or from the domain. +@nr_bufs is the number of buffers in the @bufs array. + +It is forbidden for the above struct (xen_dm_op) to contain any guest +handles. If they are needed, they should instead be in +HYPERVISOR_dm_op->bufs. + +Validation by privcmd driver +---------------------------- + +If the privcmd driver has been restricted to specific domain (using a + new ioctl), when it received an op, it will: + +1. Check hypercall is DMOP. + +2. Check domid == restricted domid. + +3. For each @nr_bufs in @bufs: Check @h and @size give a buffer + wholly in the user space part of the virtual address space. (e.g. + Linux will use access_ok()). + + +Xen Implementation +------------------ + +Since a DMOP buffers need to be copied from or to the guest, functions for +doing this would be written as below. Note that care is taken to prevent +damage from buffer under- or over-run situations. If the DMOP is called +with incorrectly sized buffers, zeros will be read, while extra is ignored. + +static bool copy_buf_from_guest(xen_dm_op_buf_t bufs[], + unsigned int nr_bufs, void *dst, + unsigned int idx, size_t dst_size) +{ + size_t size; + + if ( idx >= nr_bufs ) + return false; + + memset(dst, 0, dst_size); + + size = min_t(size_t, dst_size, bufs[idx].size); + + return !copy_from_guest(dst, bufs[idx].h, size); +} + +static bool copy_buf_to_guest(xen_dm_op_buf_t bufs[], + unsigned int nr_bufs, unsigned int idx, + void *src, size_t src_size) +{ + size_t size; + + if ( idx >= nr_bufs ) + return false; + + size = min_t(size_t, bufs[idx].size, src_size); + + return !copy_to_guest(bufs[idx].h, src, size); +} + +This leaves do_dm_op easy to implement as below: + +static int dm_op(domid_t domid, + unsigned int nr_bufs, + xen_dm_op_buf_t bufs[]) +{ + struct domain *d; + struct xen_dm_op op; + bool const_op = true; + long rc; + + rc = rcu_lock_remote_domain_by_id(domid, &d); + if ( rc ) + return rc; + + if ( !is_hvm_domain(d) ) + goto out; + + rc = xsm_dm_op(XSM_DM_PRIV, d); + if ( rc ) + goto out; + + if ( !copy_buf_from_guest(bufs, nr_bufs, &op, 0, sizeof(op)) ) + { + rc = -EFAULT; + goto out; + } + + switch ( op.op ) + { + default: + rc = -EOPNOTSUPP; + break; + } + + if ( !rc && + !const_op && + !copy_buf_to_guest(bufs, nr_bufs, 0, &op, sizeof(op)) ) + rc = -EFAULT; + + out: + rcu_unlock_domain(d); + + return rc; +} + +long do_dm_op(domid_t domid, + unsigned int nr_bufs, + XEN_GUEST_HANDLE_PARAM(xen_dm_op_buf_t) bufs) +{ + struct xen_dm_op_buf nat[MAX_NR_BUFS]; + + if ( nr_bufs > MAX_NR_BUFS ) + return -EINVAL; + + if ( copy_from_guest_offset(nat, bufs, 0, nr_bufs) ) + return -EFAULT; + + return dm_op(domid, nr_bufs, nat); +} diff --git a/docs/designs/non-cooperative-migration.md b/docs/designs/non-cooperative-migration.md new file mode 100644 index 0000000000..4b876d809f --- /dev/null +++ b/docs/designs/non-cooperative-migration.md @@ -0,0 +1,280 @@ +# Non-Cooperative Migration of Guests on Xen + +## Background + +The normal model of migration in Xen is driven by the guest because it was +originally implemented for PV guests, where the guest must be aware it is +running under Xen and is hence expected to co-operate. This model dates from +an era when it was assumed that the host administrator had control of at +least the privileged software running in the guest (i.e. the guest kernel) +which may still be true in an enterprise deployment but is not generally +true in a cloud environment. The aim of this design is to provide a model +which is purely host driven, requiring no co-operation from the software +running in the guest, and is thus suitable for cloud scenarios. + +PV guests are out of scope for this project because, as is outlined above, +they have a symbiotic relationship with the hypervisor and therefore a +certain level of co-operation is required. + +x86 HVM guests can already be migrated on Xen without guest co-operation +but only if they don’t have PV drivers installed[1] or are not in ACPI +power state S0. The reason for not expecting co-operation if the guest is +any sort of suspended state is obvious, but the reason co-operation is +expected if PV drivers are installed is due to the nature of PV protocols. + +## Xenstore Nodes and Domain ID + +The PV driver model consists of a *frontend* and a *backend*. The frontend +runs inside the guest domain and the backend runs inside a *service domain* +which may or may not be domain 0. The frontend and backend typically pass +data via memory pages which are shared between the two domains, but this +channel of communication is generally established using xenstore (the store +protocol itself being an exception to this for obvious chicken-and-egg +reasons). + +Typical protocol establishment is based on use of two separate xenstore +*areas*. If we consider PV drivers for the *netif* protocol (i.e. class vif) +and assume the guest has domid X, the service domain has domid Y, and the +vif has index Z then the frontend area will reside under the parent node: + +`/local/domain/Y/device/vif/Z` + +All backends, by convention, typically reside under parent node: + +`/local/domain/X/backend` + +and the normal backend area for vif Z would be: + +`/local/domain/X/backend/vif/Y/Z` + +but this should not be assumed. + +The toolstack will place two nodes in the frontend area to explicitly locate +the backend: + + * `backend`: the fully qualified xenstore path of the backend area + * `backend-id`: the domid of the service domain + +and similarly two nodes in the backend area to locate the frontend area: + + * `frontend`: the fully qualified xenstore path of the frontend area + * `frontend-id`: the domid of the guest domain + + +The guest domain only has write permission to the frontend area and +similarly the service domain only has write permission to the backend area, +but both ends have read permission to both areas. + +Under both frontend and backend areas is a node called *state*. This is key +to protocol establishment. Upon PV device creation the toolstack will set +the value of both state nodes to 1 (XenbusStateInitialising[2]). This +should cause enumeration of appropriate devices in both the guest and +service domains. The backend device, once it has written any necessary +protocol specific information into the xenstore backend area (to be read +by the frontend driver) will update the backend state node to 2 +(XenbusStateInitWait). From this point on PV protocols differ slightly; the +following illustration is true of the netif protocol. + +Upon seeing a backend state value of 2, the frontend driver will then read +the protocol specific information, write details of grant references (for +shared pages) and event channel ports (for signalling) that it has created, +and set the state node in the frontend area to 4 (XenbusStateConnected). +Upon see this frontend state, the backend driver will then read the grant +references (mapping the shared pages) and event channel ports (opening its +end of them) and set the state node in the backend area to 4. Protocol +establishment is now complete and the frontend and backend start to pass +data. + +Because the domid of both ends of a PV protocol forms a key part of +negotiating the data plane for that protocol (because it is encoded into +both xenstore nodes and node paths), and because guest’s own domid and the +domid of the service domain are visible to the guest in xenstore (and hence +ay cached internally), and neither are necessarily preserved during +migration, it is hence necessary to have the co-operation of the frontend +in re-negotiating the protocol using the new domid after migration. + +Moreover the backend-id value will be used by the frontend driver in +setting up grant table entries and event channels to communicate with the +service domain, so the co-operation of the guest is required to +re-establish these in the new host environment after migration. + +Thus if we are to change the model and support migration of a guest with PV +drivers, without the co-operation of the frontend driver code, the paths and +values in both the frontend and backend xenstore areas must remain unchanged +and valid in the new host environment, and the grant table entries and event +channels must be preserved (and remain operational once guest execution is +resumed). + +Because the service domain’s domid is used directly by the guest in setting +up grant entries and event channels, the backend drivers in the new host +environment must be provided by service domain with the same domid. Also, +because the guest can sample its own domid from the frontend area and use +it in hypercalls (e.g. HVMOP_set_param) rather than DOMID_SELF, the guest +domid must also be preserved to maintain the ABI. + +Furthermore, it will necessary to modify backend drivers to re-establish +communication with frontend drivers without perturbing the content of the +backend area or requiring any changes to the values of the xenstore state +nodes. + +## Other Para-Virtual State + +### Shared Rings + +Because the console and store protocol shared pages are actually part of +the guest memory image (in an E820 reserved region just below 4G in x86 +VMs) then the content will get migrated as part of the guest memory image. +Hence no additional code is require to prevent any guest visible change in +the content. + +### Shared Info + +There is already a record defined in *libxenctrl Domain Image Format* [3] +called `SHARED_INFO` which simply contains a complete copy of the domain’s +shared info page. It is not currently incuded in an HVM (type `0x0002`) +migration stream. It may be feasible to include it as an optional record +but it is not clear that the content of the shared info page ever needs +to be preserved for an HVM guest. + +For a PV guest the `arch_shared_info` sub-structure contains important +information about the guest’s P2M, but this information is not relevant for +an HVM guest where the P2M is not directly manipulated via the guest. The +other state contained in the `shared_info` structure relates the domain +wall-clock (the state of which should already be transferred by the `RTC` +HVM context information which contained in the `HVM_CONTEXT` save record) +and some event channel state (particularly if using the *2l* protocol). +Event channel state will need to be fully transferred if we are not going +to require the guest co-operation to re-open the channels and so it should +be possible to re-build a shared info page for an HVM guest from such other +state. + +Note that the shared info page also contains an array of +`XEN_LEGACY_MAX_VCPUS` (32 for x86) `vcpu_info` structures. A domain may +nominate a different guest physical address to use for the vcpu info. This +is mandatory if a domain wants to use more than XEN_LEGACY_MAX_VCPUS vCPUs +and optional otherwise. This mapping is not currently transferred in the +migration state so this will either need to be added into an existing save +record, or an additional type of save record will be needed. + +### Xenstore Watches + +As mentioned above, no domain Xenstore state is currently transferred in +the migration stream. There is a record defined in *libxenlight Domain +Image Format* [4] called `EMULATOR_XENSTORE_DATA` for transferring Xenstore +nodes relating to emulators but no record type is defined for nodes +relating to the domain itself, nor for registered *watches*. A XenStore +watch is a mechanism used by PV frontend and backend drivers to request a +notification if the value of a particular node (e.g. the other end’s state +node) changes, so it is important that watches continue to function after a +migration. One or more new save records will therefore be required to +transfer Xenstore state. It will also be necessary to extend the *store* +protocol[5] with mechanisms to allow the toolstack to acquire the list of +watches that the guest has registered and for the toolstack to register a +watch on behalf of a domain. + +### Event channels + +Event channels are essentially the para-virtual equivalent of interrupts. +They are an important part of post PV protocols. Normally a frontend driver +creates an *inter-domain* event channel between its own domain and the +domain running the backend, which it discovers using the `backend-id` node +in Xenstore (see above), by making a `EVTCHNOP_alloc_unbound` hypercall. +This hypercall allocates an event channel object in the hypervisor and +assigns a *local port* number which is then written into the frontend area +in Xenstore. The backend driver then reads this port number and *binds* to +the event channel by specifying it, and the value of `frontend-id`, as +*remote domain* and *remote port* (respectively) to a +`EVTCHNOP_bind_interdomain` hypercall. Once connection is established in +this fashion frontend and backend drivers can use the event channel as a +*mailbox* to notify each other when a shared ring has been updated with new +requests or response structures. + +Currently no event channel state is preserved on migration, requiring +frontend and backend drivers to create and bind a complete new set of event +channels in order to re-establish a protocol connection. Hence, one or more +new save records will be required to transfer event channel state in order +to avoid the need for explicit action by frontend drivers running in the +guest. Note that the local port numbers need to preserved in this state as +they are the only context the guest has to refer to the hypervisor event +channel objects. + +Note also that the PV *store* (Xenstore access) and *console* protocols +also rely on event channels which are set up by the toolstack. Normally, +early in migration, the toolstack running on the remote host would set up a +new pair of event channels for these protocols in the destination domain. +These may not be assigned the same local port numbers as the protocols +running in the source domain. For non-cooperative migration these channels +must either be created with fixed port numbers, or their creation must be +avoided and instead be included in the general event channel state +record(s). + +### Grant table + +The grant table is essentially the para-virtual equivalent of an IOMMU. For +example, the shared rings of a PV protocol are *granted* by a frontend +driver to the backend driver by allocating *grant entries* in the guest’s +table, filling in details of the memory pages and then writing the *grant +references* (the index values of the grant entries) into Xenstore. The +grant references of the protocol buffers themselves are typically written +directly into the request structures passed via a shared ring. + +The guest is responsible for managing its own grant table. No hypercall is +required to grant a memory page to another domain. It is sufficient to find +an unused grant entry and set bits in the entry to give read and/or write +access to a remote domain also specified in the entry along with the page +frame number. Thus the layout and content of the grant table logically +forms part of the guest state. + +Currently no grant table state is migrated, requiring a guest to separately +maintain any state that it wishes to persist elsewhere in its memory image +and then restore it after migration. Thus to avoid the need for such +explicit action by the guest, one or more new save records will be required +to migrate the contents of the grant table. + +# Outline Proposal + +* PV backend drivers will be modified to unilaterally re-establish +connection to a frontend if the backend state node is restored with value 4 +(XenbusStateConnected)[6]. + +* The toolstack choose a randomized domid for initial creation or default +migration, but preserve the source domid non-cooperative migration. +Non-Cooperative migration will have to be denied if the domid is +unavailable on the target host, but randomization of domid on creation +should hopefully minimize the likelihood of this. Non-Cooperative migration +to localhost will clearly not be possible. + +* `xenstored` should be modified to implement the new mechanisms needed. +See *Other Para-Virtual State* above. A further design document will +propose additional protocol messages. + +* Within the migration stream extra save records will be defined as +required. See *Other Para-Virtual State* above. A further design document +will propose modifications to the libxenlight and libxenctrl Domain Image +Formats. + +* An option should be added to the toolstack to initiate a non-cooperative +migration, instead of the (default) potentially co-operative migration. +Essentially this should skip the check to see if PV drivers and migrate as +if there are none present, but also enabling the extra save records. Note +that at least some of the extra records should only form part of a +non-cooperative migration stream. For example, migrating event channel +state would be counter productive in a normal migration as this will +essentially leak event channel objects at the receiving end. Others, such +as grant table state, could potentially harmlessly form part of a normal +migration stream. + +* * * +[1] PV drivers are deemed to be installed if the HVM parameter +*HVM_PARAM_CALLBACK_IRQ* has been set to a non-zero value. + +[2] See https://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=xen/include/public/io/xenbus.h + +[3] See https://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=docs/specs/libxc-migration-stream.pandoc + +[4] See https://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=docs/specs/libxl-migration-stream.pandoc + +[5] See https://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=docs/misc/xenstore.txt + +[6] `xen-blkback` and `xen-netback` have already been modified in Linux to do +this. diff --git a/docs/designs/qemu-deprivilege.md b/docs/designs/qemu-deprivilege.md new file mode 100644 index 0000000000..81a5f5c05d --- /dev/null +++ b/docs/designs/qemu-deprivilege.md @@ -0,0 +1,322 @@ +# Introduction + +The goal of deprilvileging qemu is this: Even if there is a bug (for +example in qemu) which permits a domain to gain control of the device +model, the compromised device model process is prevented from +violating the system's overall security properties. Ie, a guest +cannot "escape" from the virtualisation by using a qemu bug. + +This document lists the various technical measures which we either +have taken, or plan to take to effect this goal. Some of them are +required to be considered secure (that is, there are known attack +vectors which they close); others are "just in case" (that is, there +are no known attack vectors, but we perform the restrictions to reduce +the possibility of unknown attack vectors). + +# Restrictions done + +The following restrictions are currently implemented. + +## Having qemu switch user + +'''Description''': As mentioned above, having QEMU switch to a +non-root user, one per domain id. Not being the root user limits what +a compromised QEMU process can do to the system, and having one user +per domain id limits what a comprimised QEMU process can do to the +QEMU processes of other VMs. + +'''Implementation''': The toolstack adds the following to the qemu command-line: + + -runas : + +'''How to test''': + + grep /proc//status [UG]id + +'''Testing Status''': Not tested + +## Xen library / file-descriptor restrictions + +'''Description''': Close and restrict Xen-related file descriptors. +Specifically: + * Close all xenstore-related file descriptors + * Make sure that all open instances of `privcmd` and `evtchn` file +descriptors have had `IOCTL_PRIVCMD_RESTRICT` and +`IOCTL_EVTCHN_RESTRICT_DOMID` ioctls called on them, respectively. + +'''Implementation''': Toolstack adds the following to the qemu command-line: + + -xen-domid-restrict + +'''How to test''': + +Use `fishdescriptor` to pull a file descriptor from a running QEMU, +then use `depriv-fd-checker` to check that it has the desired +properties, and that hypercalls which are meant to fail do fail. (In +Debian `fishdescriptor` can be found in the binary package +`chiark-scripts`; the `depriv-fd-checker` is included in the Xen +source tree.) + +'''Testing status''': Tested + +## Chroot + +'''Description''': Qemu runs in its own chroot, such that even if it +could call an 'open' command of some sort, there would be nothing for +it to see. + +'''Implementation''': The toolstack creates a directory in the libxl "run-dir"; e.g. +`/var/run/xen/qemu-root-` + +Then adds the following to the qemu command-line: + + -chroot /var/run/xen/qemu-root- + +'''How to test''': Check `/proc//root` + +'''Tested''': Not tested + +## Namespaces for unused functionality (Linux only) + +'''Description''': QEMU doesn't use the functionality associated with +mount and IPC namespaces. (IPC namespaces contol non-file-based IPC +mechanisms within the kernel; unix and network sockets are not +affected by this.) Making separate namespaces for these for QEMU +won't affect normal operation, but it does mean that even if other +restrictions fail, the process won't be able to even name system mount +points or existing non-file-based IPC descriptors to attempt to attack +them. + +'''Implementation''': + +In theory this could be done in QEMU (similar to -sandbox, -runas, +-chroot, and so on), but a patch doing this in QEMU was NAKed upstream +(see [qemu-namespaces]). They preferred that this was done as a setup step by +whatever executes QEMU; i.e., have the process which exec's QEMU first +call: + + unshare(CLONE_NEWNS | CLONE_NEWIPC) + +'''How to test''': Check `/proc//ns/[ipc,mnt]` + +'''Tested''': Not tested + +[qemu-namespaces]: https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg04723.html + +### Basic RLIMITs + +'''Description''': A number of limits on the resources that a given +process / userid is allowed to consume. These can limit the ability +of a compromised QEMU process to DoS domain 0 by exhausting various +resources available to it. + +'''Implementation''' + +Limits that can be implemented immediately without much effort: + - RLIMIT_FSIZE` (file size) to 256KiB. + +Probably not necessary but why not: + - RLIMIT_CORE: 0 + - RLIMIT_MSGQUEUE: 0 + - RLIMIT_LOCKS: 0 + - RLIMIT_MEMLOCK: 0 + +Note: mlock() is used by QEMU only when both "realtime" and "mlock" +are specified; this does not apply to QEMU running as a Xen DM. + +'''How to test''': Check `/proc//limits` + +'''Tested''': Not tested + +### libxl UID cleanup + +'''Description''': Domain IDs are reused, and thus restricted UIDs are +reused. If a compromised QEMU can fork (due to seccomp or +RLIMIT_NPROC limits being ineffective for some reason), it may avoid +being killed when its domain dies, then wait until the domain ID is +reused again, at which point it will have control over the domain in +question (which probably belongs to someone else). + +libxl should kill all UIDs associated with a domain both when the VM +is destroyed, and before starting a VM with the same UID. + +'''Implementation''': This is unnecessarily tricky. + +The kill() system call can have three kinds of targets: + - A single pid + - A process group + - "Every process except me to which I am allowed to send a signal" (-1) + +Targeting a single pid is racy and likely to be beaten by the +following loop: + + while(1) { + if(fork()) + _exit(0); + } + +That is, by the time you've read the process list and found the +process id you want to kill, that process has exited and there is a +new process whose pid you don't know about. + +Targeting a process group will be ineffective, as unprivileged +processes are allowed to make their own process groups. + +kill(-1) can be used but must be done with care. Consider the +following code, for example: + + setuid(target_uid); + kill(-1, 9); + +This looks like it will do the trick; but by setting all of the user +ids (effective, real, and saved), it opens the 'killing' process up to +being killed by the target process: + + while(1) { + if(fork()) + _exit(0); + else + kill(-1, 9); + } + +Fortunately there is an assymetry we can take advantage of. From the +POSIX spec: + +> For a process to have permission to send a signal to a process +> designated by pid, unless the sending process has appropriate +> privileges, the real or effective user ID of the sending process shall +> match the real or saved set-user-ID of the receiving process. + +The solution is to allocate a second "reaper" uid that is only used to kill +target processes. We set the euid of the killing process to the `target_uid`, +but the ruid of the killing process to `reaper_uid`, leaving the suid of the +killing process as 0: + + setresuid(reaper_uid, target_uid, 0); + kill(-1, 9); + +NOTE: We cannot use `setreuid(reaper_uid, target_uid)` here, as that +will set *both* euid *and* suid to `target_uid`, making the killing +process vulnerable to the target process again. + +Since this will kill all other `reaper_uid` processes as well, we must +either allocate a separate `reaper_uid` per domain, or use locking to +ensure that only one killing process is active at a time. + +# Restrictions / improvements still to do + +This lists potential restrictions still to do. It is meant to be +listed in order of ease of implementation, with low-hanging fruit +first. + +### Further RLIMITs + +RLIMIT_AS limits the total amount of memory; but this includes the +virtual memory which QEMU uses as a mapcache. xen-mapcache.c already +fiddles with this; it would be straightforward to make it *set* the +rlimit to what it thinks a sensible limit is. + +RLIMIT_NPROC limits total number of processes or threads. QEMU uses +threads for some devices, so this would require some thought. + +Other things that would take some cleverness / changes to QEMU to +utilize due to ordering constrants: + - RLIMIT_NOFILES (after all necessary files are opened) + +## libxl: Treat QMP connection as untrusted + +'''Description''': Currently libxl talks with QEMU via QMP; but its +interactions have not historically considered from a security point of +view. For example, qmp_synchronous_send() waits for a response from +QEMU, which a compromised QEMU could simply not send (thus preventing +the toolstack from making forward progress). + +'''Implementation''': Audit toolstack interactions with QEMU which +happen after the guest has started running, and assume QEMU has been +compromised. + +### seccomp filtering (Linux only) + +'''Description''': Turn on seccomp filtering to disable syscalls which +QEMU doesn't need. + +'''Implementation''': Enable from the command-line: + + -sandbox on,obsolete=deny,elevateprivileges=allow,spawn=deny,resourcecontrol=deny + +`elevateprivileges` is currently required to allow `-runas` to work. +Removing this requirement would mean making sure that the uid change +happened before the seccomp2 call, perhaps by changing the uid before +executing QEMU. (But this would then require other changes to create +the QMP socket, VNC socket, and so on). + +It should be noted that `-sandbox` is implemented as a blacklist, not +a whitelist; that is, it disables known-unsed functionality which may +be harmful, rather than disabling all functionality except that known +to be safe and needed. This is unfortunately necessary since qemu +doesn't know what system calls libraries might end up making. (See +[lwn-seccomp] for a more complete discussion.) + +This feature is not on by default and may not be available in all +environments. We therefore need to either: + 1. Require that this feature be enabled to build qemu + 2. Check for `-sandbox` support at runtime before + +[lwn-seccomp]: https://lwn.net/Articles/738694/ + +### Disks + +The chroot (and seccomp?) happens late enough such that QEMU can +initialize itself and open its disks. If you want to add a disk at run +time via or insert a CD, you can't pass a path because QEMU is +chrooted. Instead use the add-fd QMP command and use +/dev/fdset/ as the path. + +A further layer of restriction could be to set RLIMIT_NOFILES to '0', +and hand all disks over QMP. + +## Migration + +When calling xen-save-devices-state, since QEMU is running in a chroot +it is not useful to pass a filename (it doesn't even have write access +inside the chroot). Instead, give it an open fd using the add-fd +mechanism. + +Additionally, all the restrictions need to be applied to the qemu +started up on the post-migration side. One issue that needs to be +solved is how to signal the toolstack on restore that qemu is ready +for the domain to be started (since this is normally done via +xenstore, and at this point the xenstore connections will have been +closed). + +### Network namespacing (Linux only) + +Enter QEMU into its own network namespace (in addition to mount & IPC +namespaces): + + unshare(CLONE_NEWNET); + +QEMU does actually use the network namespace as a Xen DM for two +purposes: 1) To set up network tap devices 2) To open vnc connections. + +#### Network + +If QEMU runs in its own network namespace, it can't open the tap +device itself because the interface won't be visible outside of its +own namespace. So instead, have the toolstack open the device and pass +it as an fd on the command-line: + + -device rtl8139,netdev=tapnet0,mac=... -netdev tap,id=tapnet0,fd= + +#### VNC + +If QEMU runs in its own network namespace, it is not straightforward +to listen on a TCP socket outside of its own network namespace. One +option would be to use VNC over a UNIX socket: + + -vnc unix:/var/run/xen/vnc- + +However, this would break functionality in the general case; I think +we need to have the toolstack open a socket and pass the fd to QEMU +(which requires changes to QEMU). + diff --git a/docs/designs/xenstore-migration.md b/docs/designs/xenstore-migration.md new file mode 100644 index 0000000000..2ce2c836f5 --- /dev/null +++ b/docs/designs/xenstore-migration.md @@ -0,0 +1,411 @@ +# Xenstore Migration + +## Background + +The design for *Non-Cooperative Migration of Guests*[1] explains that extra +save records are required in the migrations stream to allow a guest running PV +drivers to be migrated without its co-operation. Moreover the save records must +include details of registered xenstore watches as well as content; information +that cannot currently be recovered from `xenstored`, and hence some extension +to the xenstored implementations will also be required. + +As a similar set of data is needed for transferring xenstore data from one +instance to another when live updating xenstored this document proposes an +image format for a 'migration stream' suitable for both purposes. + +## Proposal + +The image format consists of a _header_ followed by 1 or more _records_. Each +record consists of a type and length field, followed by any data mandated by +the record type. At minimum there will be a single record of type `END` +(defined below). + +### Header + +The header identifies the stream as a `xenstore` stream, including the version +of the specification that it complies with. + +All fields in this header must be in _big-endian_ byte order, regardless of +the setting of the endianness bit. + + +``` + 0 1 2 3 4 5 6 7 octet ++-------+-------+-------+-------+-------+-------+-------+-------+ +| ident | ++-------------------------------+-------------------------------| +| version | flags | ++-------------------------------+-------------------------------+ +``` + + +| Field | Description | +|-----------|---------------------------------------------------| +| `ident` | 0x78656e73746f7265 ('xenstore' in ASCII) | +| | | +| `version` | 0x00000001 (the version of the specification) | +| | | +| `flags` | 0 (LSB): Endianness: 0 = little, 1 = big | +| | | +| | 1-31: Reserved (must be zero) | + +### Records + +Records immediately follow the header and have the following format: + + +``` + 0 1 2 3 4 5 6 7 octet ++-------+-------+-------+-------+-------+-------+-------+-------+ +| type | len | ++-------------------------------+-------------------------------+ +| body +... +| | padding (0 to 7 octets) | ++-------+-------------------------------------------------------+ +``` + +NOTE: padding octets here and in all subsequent format specifications must be + written as zero and should be ignored when the stream is read. + + +| Field | Description | +|--------|------------------------------------------------------| +| `type` | 0x00000000: END | +| | 0x00000001: GLOBAL_DATA | +| | 0x00000002: CONNECTION_DATA | +| | 0x00000003: WATCH_DATA | +| | 0x00000004: TRANSACTION_DATA | +| | 0x00000005: NODE_DATA | +| | 0x00000006 - 0xFFFFFFFF: reserved for future use | +| | | +| `len` | The length (in octets) of `body` | +| | | +| `body` | The type-specific record data | + +Some records will depend on other records in the migration stream. Records +upon which other records depend must always appear earlier in the stream. + +The various formats of the type-specific data are described in the following +sections: + +\pagebreak + +### END + +The end record marks the end of the image, and is the final record +in the stream. + +``` + 0 1 2 3 4 5 6 7 octet ++-------+-------+-------+-------+-------+-------+-------+-------+ +``` + + +The end record contains no fields; its body length is 0. + +\pagebreak + +### GLOBAL_DATA + +This record is only relevant for live update. It contains details of global +xenstored state that needs to be restored. + +``` + 0 1 2 3 octet ++-------+-------+-------+-------+ +| rw-socket-fd | ++-------------------------------+ +| ro-socket-fd | ++-------------------------------+ +``` + + +| Field | Description | +|----------------|----------------------------------------------| +| `rw-socket-fd` | The file descriptor of the socket accepting | +| | read-write connections | +| | | +| `ro-socket-fd` | The file descriptor of the socket accepting | +| | read-only connections | + +xenstored will resume in the original process context. Hence `rw-socket-fd` and +`ro-socket-fd` simply specify the file descriptors of the sockets. Sockets +are not always used, however, and so -1 will be used to denote an unused +socket. + + +\pagebreak + +### CONNECTION_DATA + +For live update the image format will contain a `CONNECTION_DATA` record for +each connection to xenstore. For migration it will only contain a record for +the domain being migrated. + + +``` + 0 1 2 3 4 5 6 7 octet ++-------+-------+-------+-------+-------+-------+-------+-------+ +| conn-id | conn-type | flags | ++-------------------------------+---------------+---------------+ +| conn-spec +... ++---------------+---------------+-------------------------------+ +| in-data-len | out-resp-len | out-data-len | ++---------------+---------------+-------------------------------+ +| data +... +``` + + +| Field | Description | +|----------------|----------------------------------------------| +| `conn-id` | A non-zero number used to identify this | +| | connection in subsequent connection-specific | +| | records | +| | | +| `conn-type` | 0x0000: shared ring | +| | 0x0001: socket | +| | 0x0002 - 0xFFFF: reserved for future use | +| | | +| `flags` | A bit-wise OR of: | +| | 0001: read-only | +| | | +| `conn-spec` | See below | +| | | +| `in-data-len` | The length (in octets) of any data read | +| | from the connection not yet processed | +| | | +| `out-resp-len` | The length (in octets) of a partial response | +| | not yet written to the connection | +| | | +| `out-data-len` | The length (in octets) of any pending data | +| | not yet written to the connection, including | +| | a partial response (see `out-resp-len`) | +| | | +| `data` | Pending data: first in-data-len octets of | +| | read data, then out-data-len octets of | +| | written data (any of both may be empty) | + +In case of live update the connection record for the connection via which +the live update command was issued will contain the response for the live +update command in the pending not yet written data. + +\pagebreak + +The format of `conn-spec` is dependent upon `conn-type`. + +For `shared ring` connections it is as follows: + + +``` + 0 1 2 3 4 5 6 7 octet ++---------------+---------------+---------------+---------------+ +| domid | tdomid | evtchn | ++-------------------------------+-------------------------------+ +``` + + +| Field | Description | +|-----------|---------------------------------------------------| +| `domid` | The domain-id that owns the shared page | +| | | +| `tdomid` | The domain-id that `domid` acts on behalf of if | +| | it has been subject to an SET_TARGET | +| | operation [2] or DOMID_INVALID [3] otherwise | +| | | +| `evtchn` | The port number of the interdomain channel used | +| | by `domid` to communicate with xenstored | +| | | + +Since the ABI guarantees that entry 1 in `domid`'s grant table will always +contain the GFN of the shared page. + +For `socket` connections it is as follows: + + +``` ++---------------+---------------+---------------+---------------+ +| socket-fd | pad | ++-------------------------------+-------------------------------+ +``` + + +| Field | Description | +|-------------|-------------------------------------------------| +| `socket-fd` | The file descriptor of the connected socket | + +This type of connection is only relevant for live update, where the xenstored +resumes in the original process context. Hence `socket-fd` simply specify +the file descriptor of the socket connection. + +\pagebreak + +### WATCH_DATA + +The image format will contain a `WATCH_DATA` record for each watch registered +by a connection for which there is `CONNECTION_DATA` record previously present. + + +``` + 0 1 2 3 octet ++-------+-------+-------+-------+ +| conn-id | ++---------------+---------------+ +| wpath-len | token-len | ++---------------+---------------+ +| wpath +... +| token +... +``` + + +| Field | Description | +|-------------|-------------------------------------------------| +| `conn-id` | The connection that issued the `WATCH` | +| | operation [2] | +| | | +| `wpath-len` | The length (in octets) of `wpath` including the | +| | NUL terminator | +| | | +| `token-len` | The length (in octets) of `token` including the | +| | NUL terminator | +| | | +| `wpath` | The watch path, as specified in the `WATCH` | +| | operation | +| | | +| `token` | The watch identifier token, as specified in the | +| | `WATCH` operation | + +\pagebreak + +### TRANSACTION_DATA + +The image format will contain a `TRANSACTION_DATA` record for each transaction +that is pending on a connection for which there is `CONNECTION_DATA` record +previously present. + + +``` + 0 1 2 3 octet ++-------+-------+-------+-------+ +| conn-id | ++-------------------------------+ +| tx-id | ++-------------------------------+ +``` + + +| Field | Description | +|----------------|----------------------------------------------| +| `conn-id` | The connection that issued the | +| | `TRANSACTION_START` operation [2] | +| | | +| `tx-id` | The transaction id passed back to the domain | +| | by the `TRANSACTION_START` operation | + +\pagebreak + +### NODE_DATA + +For live update the image format will contain a `NODE_DATA` record for each +node in xenstore. For migration it will only contain a record for the nodes +relating to the domain being migrated. The `NODE_DATA` may be related to +a _committed_ node (globally visible in xenstored) or a _pending_ node (created +or modified by a transaction for which there is also a `TRANSACTION_DATA` +record previously present). + + +``` + 0 1 2 3 octet ++-------+-------+-------+-------+ +| conn-id | ++-------------------------------+ +| tx-id | ++---------------+---------------+ +| path-len | value-len | ++---------------+---------------+ +| access | perm-count | ++---------------+---------------+ +| perm1 | ++-------------------------------+ +... ++-------------------------------+ +| permN | ++---------------+---------------+ +| path +... +| value +... +``` + + +| Field | Description | +|--------------|------------------------------------------------| +| `conn-id` | If this value is non-zero then this record | +| | related to a pending transaction | +| | | +| `tx-id` | This value should be ignored if `conn-id` is | +| | zero. Otherwise it specifies the id of the | +| | pending transaction | +| | | +| `path-len` | The length (in octets) of `path` including the | +| | NUL terminator | +| | | +| `value-len` | The length (in octets) of `value` (which will | +| | be zero for a deleted node) | +| | | +| `access` | This value should be ignored if this record | +| | does not relate to a pending transaction, | +| | otherwise it specifies the accesses made to | +| | the node and hence is a bitwise OR of: | +| | | +| | 0x0001: read | +| | 0x0002: written | +| | | +| | The value will be zero for a deleted node | +| | | +| `perm-count` | The number (N) of node permission specifiers | +| | (which will be 0 for a node deleted in a | +| | pending transaction) | +| | | +| `perm1..N` | A list of zero or more node permission | +| | specifiers (see below) | +| | | +| `path` | The absolute path of the node | +| | | +| `value` | The node value (which may be empty or contain | +| | NUL octets) | + + +A node permission specifier has the following format: + + +``` + 0 1 2 3 octet ++-------+-------+-------+-------+ +| perm | pad | domid | ++-------+-------+---------------+ +``` + +| Field | Description | +|---------|-----------------------------------------------------| +| `perm` | One of the ASCII values `w`, `r`, `b` or `n` as | +| | specified for the `SET_PERMS` operation [2] | +| | | +| `domid` | The domain-id to which the permission relates | + +Note that perm1 defines the domain owning the code. See [4] for more +explanation of node permissions. + +* * * + +[1] See https://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=docs/designs/non-cooperative-migration.md + +[2] See https://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=docs/misc/xenstore.txt + +[3] See https://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=xen/include/public/xen.h;hb=HEAD#l612 + +[4] https://wiki.xen.org/wiki/XenBus diff --git a/docs/features/dom0less.pandoc b/docs/features/dom0less.pandoc new file mode 100644 index 0000000000..d798596cdf --- /dev/null +++ b/docs/features/dom0less.pandoc @@ -0,0 +1,135 @@ +Dom0less +======== + +"Dom0less" is a set of Xen features that enable the deployment of a Xen +system without an control domain (often referred to as "dom0"). Each +feature can be used independently from the others, unless otherwise +stated. + +Booting Multiple Domains from Device Tree +----------------------------------------- + +This feature enables Xen to create a set of DomUs at boot time. +Information about the DomUs to be created by Xen is passed to the +hypervisor via Device Tree. Specifically, the existing Device Tree based +Multiboot specification has been extended to allow for multiple domains +to be passed to Xen. See docs/misc/arm/device-tree/booting.txt for more +information about the Multiboot specification and how to use it. + +Currently, a control domain ("dom0") is still required, but in the +future it will become unnecessary when all domains are created +directly from Xen. Instead of waiting for the control domain to be fully +booted and the Xen tools to become available, domains created by Xen +this way are started right away in parallel. Hence, their boot time is +typically much shorter. + + +Configuration +------------- + +### Loading binaries into memory ### + +U-Boot needs to load not just Xen, the device tree binary, the dom0 kernel and +ramdisk. It also needs to load the kernel and ramdisk of any additional domains +to boot. For example if this is the bootcmd for Xen and Dom0: + + tftpb 0x1280000 xen.dtb + tftpb 0x0x80000 xen-Image + tftpb 0x1400000 xen.ub + tftpb 0x9000000 xen-rootfs.cpio.gz.u-boot + + bootm 0x1400000 0x9000000 0x1280000 + +If we want to add one DomU with Image-DomU as the DomU kernel +and ramdisk-DomU as DomU ramdisk: + + tftpb 0x1280000 xen.dtb + tftpb 0x80000 xen-Image + tftpb 0x1400000 xen.ub + tftpb 0x9000000 xen-rootfs.cpio.gz.u-boot + + tftpb 0x2000000 Image-DomU + tftpb 0x3000000 ramdisk-DomU + + bootm 0x1400000 0x9000000 0x1280000 + + +### Device Tree configuration ### + +In addition to loading the necessary binaries, we also need to advertise +the presence of the additional VM and its configuration. It is done via +device tree adding a node under /chosen as follows: + + domU1 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "xen,domain"; + memory = <0 0x20000>; + cpus = <1>; + vpl011; + + module@2000000 { + compatible = "multiboot,kernel", "multiboot,module"; + reg = <0x2000000 0xffffff>; + bootargs = "console=ttyAMA0"; + }; + + module@30000000 { + compatible = "multiboot,ramdisk", "multiboot,module"; + reg = <0x3000000 0xffffff>; + }; + }; + +Where memory is the memory of the VM in KBs, cpus is the number of +cpus. module@2000000 and module@3000000 advertise where the kernel and +ramdisk are in memory. + +Note: the size specified should exactly match the size of the Kernel/initramfs. +Otherwise, they may be unusable in Xen (for instance if they are compressed). + +See docs/misc/arm/device-tree/booting.txt for more information. + +Limitations +----------- + +Domains started by Xen at boot time currently have the following +limitations: + +- They cannot be properly shutdown or rebooted using xl. If one of them + crashes, the whole platform should be rebooted. + +- Some xl operations might not work as expected. xl is meant to be used + with domains that have been created by it. Using xl with domains + started by Xen at boot might not work as expected. + +- The GIC version is the native version. In absence of other + information, the GIC version exposed to the domains started by Xen at + boot is the same as the native GIC version. + +- No PV drivers. There is no support for PV devices at the moment. All + devices need to be statically assigned to guests. + +- Pinning vCPUs of domains started by Xen at boot can be + done from the control domain, using `xl vcpu-pin` as usual. It is not + currently possible to configure vCPU pinning without a control domain. + However, the NULL scheduler can be selected by passing `sched=null` to + the Xen command line. The NULL scheduler automatically assigns and + pins vCPUs to pCPUs, but the vCPU-pCPU assignments cannot be + configured. + +Notes +----- + +- 'xl console' command will not attach to the domain's console in case + of dom0less. DomU are domains created by Xen (similar to Dom0) and + therefore they are all managed by Xen and some of the commands may not work. + + A user is allowed to configure the key sequence to switch input. + Pressing the Xen "conswitch" (Ctrl-A by default) three times + switches input in case of dom0less mode. + +- Domains created by Xen will have no name at boot. Domain-0 has a name + thanks to the helper xen-init-dom0 called at boot by the initscript. + If you want to setup DomU name, then you will have to create the xenstore + node associated. By default DomU names are shown as '(null)' in the + xl domains list. diff --git a/docs/features/feature-levelling.pandoc b/docs/features/feature-levelling.pandoc new file mode 100644 index 0000000000..171a42c358 --- /dev/null +++ b/docs/features/feature-levelling.pandoc @@ -0,0 +1,216 @@ +% Feature Levelling +% Revision 1 + +\clearpage + +# Basics + +---------------- ---------------------------------------------------- + Status: **Supported** + + Architecture: x86 + + Component: Hypervisor, toolstack, guest +---------------- ---------------------------------------------------- + + +# Overview + +On native hardware, a kernel will boot, detect features, typically optimise +certain codepaths based on the available features, and expect the features to +remain available until it shuts down. + +The same expectation exists for virtual machines, and it is up to the +hypervisor/toolstack to fulfill this expectation for the lifetime of the +virtual machine, including across migrate/suspend/resume. + + +# User details + +Many factors affect the featureset which a VM may use: + +* The CPU itself +* The BIOS/firmware/microcode version and settings +* The hypervisor version and command line settings +* Further restrictions the toolstack chooses to apply + +A firmware or software upgrade might reduce the available set of features +(e.g. Intel disabling TSX in a microcode update for certain Haswell/Broadwell +processors), as may editing the settings. + +It is unsafe to make any assumption about features remaining consistent across +a host reboot. Xen recalculates all information from scratch each boot, and +provides the information for the toolstack to consume. + +`xl` currently has no facilities to help the user collect appropriate feature +information from relevant hosts and compute appropriate feature specifications +for use in host or domain configurations. (`xl` being a single-host +toolstack, it would in any case need external support for accessing remote +hosts eg via ssh, in the form of automation software like GNU parallel or +ansible.) + +# Technical details + +The `CPUID` instruction is used by software to query for features. In the +virtualisation usecase, guest software should query Xen rather than hardware +directly. However, `CPUID` is an unprivileged instruction which doesn't +fault, complicating the task of hiding hardware features from guests. + +Important files: + +* Hypervisor + * `xen/arch/x86/cpu/*.c` + * `xen/arch/x86/cpuid.c` + * `xen/include/asm-x86/cpuid-autogen.h` + * `xen/include/public/arch-x86/cpufeatureset.h` + * `xen/tools/gen-cpuid.py` +* `libxc` + * `tools/libxc/xc_cpuid_x86.c` + +## Ability to control CPUID + +### HVM + +HVM guests (using `Intel VT-x` or `AMD SVM`) will unconditionally exit to Xen +on all `CPUID` instructions, allowing Xen full control over all information. + +### PV + +The `CPUID` instruction is unprivileged, so executing it in a PV guest will +not trap, leaving Xen no direct ability to control the information returned. + +### Xen Forced Emulation Prefix + +Xen-aware PV software can make use of the 'Forced Emulation Prefix' + +> `ud2a; .ascii 'xen'; cpuid` + +which Xen recognises as a deliberate attempt to get the fully-controlled +`CPUID` information rather than the hardware-reported information. This only +works with cooperative software. + +### Masking and Override MSRs + +AMD CPUs from the `K8` onwards support _Feature Override_ MSRs, which allow +direct control of the values returned for certain `CPUID` leaves. These MSRs +allow any result to be returned, including the ability to advertise features +which are not actually supported. + +Intel CPUs between `Nehalem` and `SandyBridge` have differing numbers of +_Feature Mask_ MSRs, which are a simple AND-mask applied to all `CPUID` +instructions requesting specific feature bitmap sets. The exact MSRs, and +which feature bitmap sets they affect are hardware specific. These MSRs allow +features to be hidden by clearing the appropriate bit in the mask, but does +not allow unsupported features to be advertised. + +### CPUID Faulting + +Intel CPUs from `IvyBridge` onwards have _CPUID Faulting_, which allows Xen to +cause `CPUID` instruction executed in PV guests to fault. This allows Xen +full control over all information, exactly like HVM guests. + +## Compile time + +As some features depend on other features, it is important that, when +disabling a certain feature, we disable all features which depend on it. This +allows runtime logic to be simplified, by being able to rely on testing only +the single appropriate feature, rather than the entire feature dependency +chain. + +To speed up runtime calculation of feature dependencies, the dependency chain +is calculated and flattened by `xen/tools/gen-cpuid.py` to create +`xen/include/asm-x86/cpuid-autogen.h` from +`xen/include/public/arch-x86/cpufeatureset.h`, allowing the runtime code to +disable all dependent features of a specific disabled feature in constant +time. + +## Host boot + +As Xen boots, it will enumerate the features it can see. This is stored as +the *raw_featureset*. + +Errata checks and command line arguments are then taken into account to reduce +the *raw_featureset* into the *host_featureset*, which is the set of +features Xen uses. On hardware with masking/override MSRs, the default MSR +values are picked from the *host_featureset*. + +The *host_featureset* is then used to calculate the *pv_featureset* and +*hvm_featureset*, which are the maximum featuresets Xen is willing to offer +to PV and HVM guests respectively. + +In addition, Xen will calculate how much control it has over non-cooperative +PV `CPUID` instructions, storing this information as *levelling_caps*. + +## Domain creation + +The toolstack can query each of the calculated featureset via +`XEN_SYSCTL_get_cpu_featureset`, and query for the levelling caps via +`XEN_SYSCTL_get_cpu_levelling_caps`. + +These data should be used by the toolstack when choosing the eventual +featureset to offer to the guest. + +Once a featureset has been chosen, it is set (implicitly or explicitly) via +`XEN_DOMCTL_set_cpuid`. Xen will clamp the toolstacks choice to the +appropriate PV or HVM featureset. On hardware with masking/override MSRs, the +guest cpuid policy is reflected in the MSRs, which are context switched with +other vcpu state. + +# Limitations + +A guest which ignores the provided feature information and manually probes for +features will be able to find some of them. e.g. There is no way of forcibly +preventing a guest from using 1GB superpages if the hardware supports it. + +Some information simply cannot be hidden from guests. There is no way to +control certain behaviour such as the hardware MXCSR_MASK or x87 FPU exception +behaviour. + + +# Testing + +Feature levelling is a very wide area, and used all over the hypervisor. +Please ask on xen-devel for help identifying more specific tests which could +be of use. + + +# Known issues / Areas for improvement + +The feature querying and levelling functions should exposed in a +convenient-to-use way by `xl`. + +Xen currently has no concept of per-{socket,core,thread} CPUID information. +As a result, details such as APIC IDs, topology and cache information do not +match real hardware, and do not match the documented expectations in the Intel +and AMD system manuals. + +The CPU feature flags are the only information which the toolstack has a +sensible interface for querying and levelling. Other information in the CPUID +policy is important and should be levelled (e.g. maxphysaddr). + +The CPUID policy is currently regenerated from scratch by the receiving side, +once memory and vcpu content has been restored. This means that the receiving +Xen cannot verify the memory/vcpu content against the CPUID policy, and can +end up running a guest which will subsequently crash. The CPUID policy should +be at the head of the migration stream. + +MSRs are another source of features for guests. There is no general provision +for controlling the available MSRs. E.g. 64bit versions of Windows notice +changes in IA32_MISC_ENABLE, and suffer a BSOD 0x109 (Critical Structure +Corruption) + + +# References + +[Intel Flexmigration](http://www.intel.co.uk/content/dam/www/public/us/en/documents/application-notes/virtualization-technology-flexmigration-application-note.pdf) + +[AMD Extended Migration Technology](http://developer.amd.com/wordpress/media/2012/10/43781-3.00-PUB_Live-Virtual-Machine-Migration-on-AMD-processors.pdf) + + +# History + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +2016-05-31 1 Xen 4.7 Document written +---------- -------- -------- ------------------------------------------- diff --git a/docs/features/hypervisorfs.pandoc b/docs/features/hypervisorfs.pandoc new file mode 100644 index 0000000000..a0a0ead057 --- /dev/null +++ b/docs/features/hypervisorfs.pandoc @@ -0,0 +1,92 @@ +% Hypervisor FS +% Revision 1 + +\clearpage + +# Basics +---------------- --------------------- + Status: **Supported** + + Architectures: all + + Components: Hypervisor, toolstack +---------------- --------------------- + +# Overview + +The Hypervisor FS is a hierarchical name-value store for reporting +information to guests, especially dom0. It is similar to the Linux +kernel's sysfs. Entries and directories are created by the hypervisor, +while the toolstack is able to use a hypercall to query the entry +values or (if allowed by the hypervisor) to modify them. + +# User details + +With: + + xenhypfs ls + +the user can list the entries of a specific path of the FS. Using: + + xenhypfs cat + +the content of an entry can be retrieved. Using: + + xenhypfs write + +a writable entry can be modified. With: + + xenhypfs tree + +the complete Hypervisor FS entry tree can be printed. + +The FS paths are documented in `docs/misc/hypfs-paths.pandoc`. + +# Technical details + +Access to the hypervisor filesystem is done via the stable new hypercall +__HYPERVISOR_filesystem_op. This hypercall supports a sub-command +XEN_HYPFS_OP_get_version which will return the highest version of the +interface supported by the hypervisor. Additions to the interface need +to bump the interface version. The hypervisor is required to support the +previous interface versions, too (this implies that additions will always +require new sub-commands in order to allow the hypervisor to decide which +version of the interface to use). + +* hypercall interface specification + * `xen/include/public/hypfs.h` +* hypervisor internal files + * `xen/include/xen/hypfs.h` + * `xen/common/hypfs.c` +* `libxenhypfs` + * `tools/libs/libxenhypfs/*` +* `xenhypfs` + * `tools/misc/xenhypfs.c` +* path documentation + * `docs/misc/hypfs-paths.pandoc` + +# Testing + +Any new parameters or hardware mitigations should be verified to show up +correctly in the filesystem. + +# Areas for improvement + +* More detailed access rights +* Entries per domain and/or per cpupool + +# Known issues + +* None + +# References + +* None + +# History + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +2020-01-23 1 Xen 4.14 Document written +---------- -------- -------- ------------------------------------------- diff --git a/docs/features/intel_psr_cat_cdp.pandoc b/docs/features/intel_psr_cat_cdp.pandoc new file mode 100644 index 0000000000..1fb02ea1e6 --- /dev/null +++ b/docs/features/intel_psr_cat_cdp.pandoc @@ -0,0 +1,512 @@ +% Intel Cache Allocation Technology and Code and Data Prioritization Features +% Revision 1.17 + +\clearpage + +# Basics + +---------------- ---------------------------------------------------- + Status: **Tech Preview** + +Architecture(s): Intel x86 + + Component(s): Hypervisor, toolstack + + Hardware: L3 CAT: Haswell and beyond CPUs + CDP : Broadwell and beyond CPUs + L2 CAT: Atom codename Goldmont and beyond CPUs +---------------- ---------------------------------------------------- + +# Terminology + +* CAT Cache Allocation Technology +* CBM Capacity BitMasks +* CDP Code and Data Prioritization +* CMT Cache Monitoring Technology +* COS/CLOS Class of Service +* MSRs Machine Specific Registers +* PSR Intel Platform Shared Resource + +# Overview + +Intel provides a set of allocation capabilities including Cache Allocatation +Technology (CAT) and Code and Data Prioritization (CDP). + +CAT allows an OS or hypervisor to control allocation of a CPU's shared cache +based on application/domain priority or Class of Service (COS). Each COS is +configured using capacity bitmasks (CBMs) which represent cache capacity and +indicate the degree of overlap and isolation between classes. Once CAT is +configured, the processor allows access to portions of cache according to the +established COS. Intel Xeon processor E5 v4 family (and some others) introduce +capabilities to configure and make use of the CAT mechanism on the L3 cache. +Intel Goldmont processor provides support for control over the L2 cache. + +Code and Data Prioritization (CDP) Technology is an extension of CAT. CDP +enables isolation and separate prioritization of code and data fetches to +the L3 cache in a SW configurable manner, which can enable workload +prioritization and tuning of cache capacity to the characteristics of the +workload. CDP extends CAT by providing separate code and data masks per Class +of Service (COS). When SW configures to enable CDP, L3 CAT is disabled. + +# User details + +* Feature Enabling: + + Add "psr=cat" to boot line parameter to enable all supported level CAT + features. Add "psr=cdp" to enable L3 CDP but disables L3 CAT by SW. + +* xl interfaces: + + 1. `psr-cat-show [OPTIONS] domain-id`: + + Show L2 CAT or L3 CAT/CDP CBM of the domain designated by Xen domain-id. + + Option `-l`: + + `-l2`: Show cbm for L2 cache. + + `-l3`: Show cbm for L3 cache. + + If `-lX` is specified and LX is not supported, print error. + If no `-l` is specified, level 3 is the default option. + + 2. `psr-cat-set [OPTIONS] domain-id cbm`: + + Set L2 CAT or L3 CAT/CDP CBM to the domain designated by Xen domain-id. + + Option `-s`: Specify the socket to process, otherwise all sockets are + processed. + + Option `-l`: + + `-l2`: Specify cbm for L2 cache. + + `-l3`: Specify cbm for L3 cache. + + If `-lX` is specified and LX is not supported, print error. + If no `-l` is specified, level 3 is the default option. + + Option `-c` or `-d`: + + `-c`: Set L3 CDP code cbm. + + `-d`: Set L3 CDP data cbm. + + 3. `psr-hwinfo [OPTIONS]`: + + Show CMT & L2 CAT & L3 CAT/CDP HW information on every socket. + + Option `-m, --cmt`: Show Cache Monitoring Technology (CMT) hardware + info. + + Option `-a, --cat`: Show CAT/CDP hardware info. + +# Technical details + +L3 CAT/CDP and L2 CAT are all members of Intel PSR features, they share the base +PSR infrastructure in Xen. + +## Hardware perspective + +CAT/CDP defines a range of MSRs to assign different cache access patterns +which are known as CBMs, each CBM is associated with a COS. + +E.g. L2 CAT: + + +----------------------------+----------------+ + IA32_PQR_ASSOC | MSR (per socket) | Address | + +----+---+-------+ +----------------------------+----------------+ + | |COS| | | IA32_L2_QOS_MASK_0 | 0xD10 | + +----+---+-------+ +----------------------------+----------------+ + +-------------> | ... | ... | + +----------------------------+----------------+ + | IA32_L2_QOS_MASK_n | 0xD10+n (n<64) | + +----------------------------+----------------+ + +L3 CAT/CDP uses a range of MSRs from 0xC90 ~ 0xC90+n (n<128). + +L2 CAT uses a range of MSRs from 0xD10 ~ 0xD10+n (n<64), following the L3 +CAT/CDP MSRs, setting different L2 cache accessing patterns from L3 cache is +supported. + +Every MSR stores a CBM value. A capacity bitmask (CBM) provides a hint to the +hardware indicating the cache space a domain should be limited to as well as +providing an indication of overlap and isolation in the CAT-capable cache from +other domains contending for the cache. + +Sample cache capacity bitmasks for a bitlength of 8 are shown below. Please +note that all (and only) contiguous '1' combinations are allowed (e.g. FFFFH, +0FF0H, 003CH, etc.). + + +----+----+----+----+----+----+----+----+ + | M7 | M6 | M5 | M4 | M3 | M2 | M1 | M0 | + +----+----+----+----+----+----+----+----+ + COS0 | A | A | A | A | A | A | A | A | Default Bitmask + +----+----+----+----+----+----+----+----+ + COS1 | A | A | A | A | A | A | A | A | + +----+----+----+----+----+----+----+----+ + COS2 | A | A | A | A | A | A | A | A | + +----+----+----+----+----+----+----+----+ + + +----+----+----+----+----+----+----+----+ + | M7 | M6 | M5 | M4 | M3 | M2 | M1 | M0 | + +----+----+----+----+----+----+----+----+ + COS0 | A | A | A | A | A | A | A | A | Overlapped Bitmask + +----+----+----+----+----+----+----+----+ + COS1 | | | | | A | A | A | A | + +----+----+----+----+----+----+----+----+ + COS2 | | | | | | | A | A | + +----+----+----+----+----+----+----+----+ + + +----+----+----+----+----+----+----+----+ + | M7 | M6 | M5 | M4 | M3 | M2 | M1 | M0 | + +----+----+----+----+----+----+----+----+ + COS0 | A | A | A | A | | | | | Isolated Bitmask + +----+----+----+----+----+----+----+----+ + COS1 | | | | | A | A | | | + +----+----+----+----+----+----+----+----+ + COS2 | | | | | | | A | A | + +----+----+----+----+----+----+----+----+ + +We can get the CBM length through CPUID. The default value of CBM is calculated +by `(1ull << cbm_len) - 1`. That is a fully open bitmask, all ones bitmask. +The COS\[0\] always stores the default value without change. + +There is a `IA32_PQR_ASSOC` register which stores the COS ID of the VCPU. HW +enforces cache allocation according to the corresponding CBM. + +## The relationship between L3 CAT/CDP and L2 CAT + +HW may support all features. By default, CDP is disabled on the processor. +If the L3 CAT MSRs are used without enabling CDP, the processor operates in +a traditional CAT-only mode. When CDP is enabled: + +* the CAT mask MSRs are re-mapped into interleaved pairs of mask MSRs for + data or code fetches. + +* the range of COS for CAT is re-indexed, with the lower-half of the COS + range available for CDP. + +L2 CAT is independent of L3 CAT/CDP, which means L2 CAT can be enabled while +L3 CAT/CDP is disabled, or L2 CAT and L3 CAT/CDP are both enabled. + +As a requirement, the bits of CBM of CAT/CDP must be continuous. + +N.B. L2 CAT and L3 CAT/CDP share the same COS field in the same associate +register `IA32_PQR_ASSOC`, which means one COS is associated with a pair of +L2 CAT CBM and L3 CAT/CDP CBM. + +Besides, the max COS of L2 CAT may be different from L3 CAT/CDP (or other +PSR features in future). In some cases, a domain is permitted to have a COS +that is beyond one (or more) of PSR features but within the others. For +instance, let's assume the max COS of L2 CAT is 8 but the max COS of L3 +CAT is 16, when a domain is assigned 9 as COS, the L3 CAT CBM associated to +COS 9 would be enforced, but for L2 CAT, the HW works as default value is +set since COS 9 is beyond the max COS (8) of L2 CAT. + +## Design Overview + +* Core COS/CBM association + + When enforcing CAT/CDP, all cores of domains have the same default COS + (COS0) which is associated with the fully open CBM (all ones bitmask) to + access all cache. The default COS is used only in hypervisor and is + transparent to tool stack and user. + + System administrator can change PSR allocation policy at runtime by tool + stack. Since L2 CAT shares COS with L3 CAT/CDP, a COS corresponds to a + 2-tuple, like \[L2 CBM, L3 CBM\] with only-CAT enabled, when CDP is + enabled, one COS corresponds to a 3-tuple, like \[L2 CBM, L3 Code_CBM, + L3 Data_CBM\]. If neither L3 CAT nor L3 CDP is enabled, things would be + easier, one COS corresponds to one L2 CBM. + +* VCPU schedule + + When context switch happens, the COS of VCPU is written to per-thread MSR + `IA32_PQR_ASSOC`, and then hardware enforces cache allocation according to + the corresponding CBM. + +* Multi-sockets + + Different sockets may have different CAT/CDP capability (e.g. max COS) + although it is consistent on the same socket. So the capability of + per-socket CAT/CDP is specified. + + 'psr-cat-set' can set CBM for one domain per socket. On each socket, we + maintain a COS array for all domains. One domain uses one COS at one time. + One COS stores the CBM of the domain to work. So, when a VCPU of the domain + is migrated from socket 1 to socket 2, it follows configuration on socket 2. + + E.g. user sets domain 1 CBM on socket 1 to 0x7f which uses COS 9 but sets + domain 1 CBM on socket 2 to 0x3f which uses COS 7. When VCPU of this domain + is migrated from socket 1 to 2, the COS ID used is 7, that means 0x3f is the + CBM to work for this domain 1 now. + +## Implementation Description + +* Hypervisor interfaces: + + 1. Boot line parameter "psr=cat" enables L2 CAT and L3 CAT if hardware + supported. "psr=cdp" enables CDP if hardware supported. + + 2. SYSCTL: + + * XEN_SYSCTL_PSR_CAT_get_l3_info: Get L3 CAT/CDP information. + * XEN_SYSCTL_PSR_CAT_get_l2_info: Get L2 CAT information. + + 3. DOMCTL: + + * XEN_DOMCTL_PSR_CAT_OP_GET_L3_CBM: Get L3 CBM for a domain. + * XEN_DOMCTL_PSR_CAT_OP_SET_L3_CBM: Set L3 CBM for a domain. + * XEN_DOMCTL_PSR_CAT_OP_GET_L3_CODE: Get CDP Code CBM for a domain. + * XEN_DOMCTL_PSR_CAT_OP_SET_L3_CODE: Set CDP Code CBM for a domain. + * XEN_DOMCTL_PSR_CAT_OP_GET_L3_DATA: Get CDP Data CBM for a domain. + * XEN_DOMCTL_PSR_CAT_OP_SET_L3_DATA: Set CDP Data CBM for a domain. + * XEN_DOMCTL_PSR_CAT_OP_GET_L2_CBM: Get L2 CBM for a domain. + * XEN_DOMCTL_PSR_CAT_OP_SET_L2_CBM: Set L2 CBM for a domain. + +* xl interfaces: + + 1. psr-cat-show -lX domain-id + + Show LX cbm for a domain. + + => XEN_SYSCTL_PSR_CAT_get_l3_info / + XEN_SYSCTL_PSR_CAT_get_l2_info / + XEN_DOMCTL_PSR_CAT_OP_GET_L3_CBM / + XEN_DOMCTL_PSR_CAT_OP_GET_L3_CODE / + XEN_DOMCTL_PSR_CAT_OP_GET_L3_DATA / + XEN_DOMCTL_PSR_CAT_OP_GET_L2_CBM + + 2. psr-cat-set -lX domain-id cbm + + Set LX cbm for a domain. + + => XEN_DOMCTL_PSR_CAT_OP_SET_L3_CBM / + XEN_DOMCTL_PSR_CAT_OP_SET_L3_CODE / + XEN_DOMCTL_PSR_CAT_OP_SET_L3_DATA / + XEN_DOMCTL_PSR_CAT_OP_SET_L2_CBM + + 3. psr-hwinfo + + Show PSR HW information, including L3 CAT/CDP/L2 CAT + + => XEN_SYSCTL_PSR_CAT_get_l3_info / + XEN_SYSCTL_PSR_CAT_get_l2_info + +* Key data structure: + + 1. Feature properties + + static const struct feat_props { + unsigned int cos_num; + enum cbm_type type[PSR_MAX_COS_NUM]; + enum cbm_type alt_type; + bool (*get_feat_info)(const struct feat_node *feat, + uint32_t data[], unsigned int array_len); + void (*write_msr)(unsigned int cos, uint32_t val, + enum cbm_type type); + } *feat_props[PSR_SOCKET_FEAT_NUM]; + + Every feature has its own properties, e.g. some data and actions. A + feature property pointer array is declared to save every feature's + properties. + + * Member `cos_num` + + `cos_num` is the number of COS registers the feature uses, e.g. + L3/L2 CAT uses 1 register but CDP uses 2 registers. + + * Member `type` + + `type` is an array to save all 'enum cbm_type' values of the + feature. It is used with cos_num together to get/write a feature's + COS registers values one by one. + + * Member `alt_type` + + `alt_type` is 'alternative type'. When this 'alt_type' is input, + the feature does some special operations. + + * Member `get_feat_info` + + `get_feat_info` is used to return feature HW info through sysctl. + + * Member `write_msr` + + `write_msr` is used to write out feature MSR register. + + 2. Feature node + + struct feat_node { + unsigned int cos_max; + unsigned int cbm_len; + uint32_t cos_reg_val[MAX_COS_REG_CNT]; + }; + + When a PSR enforcement feature is enabled, it will be added into a + feature array. + + * Member `cos_max` + + `cos_max` is one of the hardware info of CAT. It means the max + number of COS registers. As L3 CAT/CDP/L2 CAT all have it, it is + declared in `feat_node`. + + * Member `cbm_len` + + `cbm_len` is one of the hardware info of CAT. It means the max + number of bits to set. + + * Member `cos_reg_val` + + `cos_reg_val` is an array to maintain the value set in all COS + registers of the feature. The array is indexed by COS ID. + + 3. Per-socket PSR features information structure + + struct psr_socket_info { + bool feat_init; + struct feat_node *features[PSR_SOCKET_FEAT_NUM]; + spinlock_t ref_lock; + unsigned int cos_ref[MAX_COS_REG_CNT]; + DECLARE_BITMAP(dom_ids, DOMID_IDLE + 1); + }; + + We collect all PSR allocation features information of a socket in this + `struct psr_socket_info`. + + * Member `feat_init` + + feat_init` is a flag, to indicate whether the CPU init on a socket + has been done. + + * Member `features` + + `features` is a pointer array to save all enabled features pointers + according to feature position defined in `enum psr_feat_type`. + + * Member `ref_lock` + + `ref_lock` is a spin lock to protect `cos_ref`. + + * Member `cos_ref` + + `cos_ref` is an array which maintains the reference of one COS. + It maps to cos_reg_val\[MAX_COS_REG_NUM\] in `struct feat_node`. + If one COS is used by one domain, the corresponding reference will + increase by one. If a domain releases the COS, the reference will + decrease by one. The array is indexed by COS ID. + + * Member `dom_ids` + + `dom_ids` is a bitmap, every bit corresponds to a domain. Index is + domain_id. It is used to help restore the cos_id of the domain to 0 + when a socket is offline and then online again. + +# Limitations + +CAT/CDP can only work on HW which enables it(check by CPUID). So far, there is +no HW which enables both L2 CAT and L3 CAT/CDP. But SW implementation has +considered such scenario to enable both L2 CAT and L3 CAT/CDP. + +# Testing + +We can execute above xl commands to verify L2 CAT and L3 CAT/CDP on different +HWs support them. + +For example: + + root@:~$ xl psr-hwinfo --cat + Cache Allocation Technology (CAT): L2 + Socket ID : 0 + Maximum COS : 3 + CBM length : 8 + Default CBM : 0xff + + root@:~$ xl psr-cat-cbm-set -l2 1 0x7f + + root@:~$ xl psr-cat-show -l2 1 + Socket ID : 0 + Default CBM : 0xff + ID NAME CBM + 1 ubuntu14 0x7f + +# Areas for improvement + +A hexadecimal number is used to set/show CBM for a domain now. Although this +is convenient to cover overlap/isolated bitmask requirement, it is not +user-friendly. + +To improve this, the libxl interfaces can be wrapped in libvirt to provide more +user-friendly interfaces to user, e.g. a percentage number of the cache to set +and show. + +# Known issues + +N/A + +# References + +"INTEL RESOURCE DIRECTOR TECHNOLOGY (INTEL RDT) ALLOCATION FEATURES" [Intel 64 and IA-32 Architectures Software Developer Manuals, vol3](http://www.intel.com/content/www/us/en/processors/architectures-software-developer-manuals.html) + +# History + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +2016-08-12 1.0 Xen 4.9 Design document written + +2017-02-13 1.7 Xen 4.9 Changes: + + 1. Modify the design document to cover L3 + CAT/CDP and L2 CAT; + + 2. Fix typos; + + 3. Amend description of `feat_mask` to make + it clearer; + + 4. Other minor changes. + +2017-02-15 1.8 Xen 4.9 Changes: + + 1. Add content in 'Areas for improvement'; + + 2. Adjust revision number. + +2017-03-16 1.9 Xen 4.9 Changes: + + 1. Add 'CMT' in 'Terminology'; + + 2. Change 'feature list' to 'feature array'. + + 3. Modify data structure descriptions. + + 4. Adjust revision number. + +2017-05-03 1.11 Xen 4.9 Changes: + + 1. Modify data structure descriptions. + + 2. Adjust revision number. + +2017-07-13 1.14 Xen 4.10 Changes: + + 1. Fix a typo. + +2017-08-01 1.15 Xen 4.10 Changes: + + 1. Add 'alt_type' in 'feat_props' structure. + +2017-08-04 1.16 Xen 4.10 Changes: + + 1. Remove special character which may cause + html creation failure. + +2018-07-10 1.17 Xen 4.12 Changes: + + 1. Reformat complete document to enable PDF + creation. + +---------- -------- -------- ------------------------------------------- diff --git a/docs/features/intel_psr_mba.pandoc b/docs/features/intel_psr_mba.pandoc new file mode 100644 index 0000000000..86df661ba8 --- /dev/null +++ b/docs/features/intel_psr_mba.pandoc @@ -0,0 +1,297 @@ +% Intel Memory Bandwidth Allocation (MBA) Feature +% Revision 1.8 + +\clearpage + +# Basics + +---------------- ---------------------------------------------------- + Status: **Tech Preview** + +Architecture(s): Intel x86 + + Component(s): Hypervisor, toolstack + + Hardware: MBA is supported on Skylake Server and beyond +---------------- ---------------------------------------------------- + +# Terminology + +* CAT Cache Allocation Technology +* CBM Capacity BitMasks +* CDP Code and Data Prioritization +* COS/CLOS Class of Service +* HW Hardware +* MBA Memory Bandwidth Allocation +* MSRs Machine Specific Registers +* PSR Intel Platform Shared Resource +* THRTL Throttle value or delay value + +# Overview + +The Memory Bandwidth Allocation (MBA) feature provides indirect and approximate +control over memory bandwidth available per-core. This feature provides OS/ +hypervisor the ability to slow misbehaving apps/domains by using a credit-based +throttling mechanism. + +# User details + +* Feature Enabling: + + Add "psr=mba" to boot line parameter to enable MBA feature. + +* xl interfaces: + + 1. `psr-mba-show [domain-id|domain-name]`: + + Show memory bandwidth throttling for domain. Under different modes, it + shows different type of data. + + There are two modes: + Linear mode: the input precision is defined as 100-(MBA_MAX). For instance, + if the MBA_MAX value is 90, the input precision is 10%. Values not an even + multiple of the precision (e.g., 12%) will be rounded down (e.g., to 10% + delay applied) by HW automatically. The response of throttling value is + linear. + + Non-linear mode: input delay values are powers-of-two from zero to the + MBA_MAX value from CPUID. In this case any values not a power of two will + be rounded down the next nearest power of two by HW automatically. The + response of throttling value is non-linear. + + For linear mode, it shows the decimal value. For non-linear mode, it shows + hexadecimal value. + + 2. `psr-mba-set [OPTIONS] `: + + Set memory bandwidth throttling for domain. + + Options: + '-s': Specify the socket to process, otherwise all sockets are processed. + + Throttling value set in register implies the approximate amount of delaying + the traffic between core and memory. Higher throttling value result in + lower bandwidth. The max throttling value (MBA_MAX) supported can be + obtained through CPUID inside hypervisor. Users can fetch the MBA_MAX value + using the `psr-hwinfo` xl command. + +# Technical details + +MBA is a member of Intel PSR features, it shares the base PSR infrastructure +in Xen. + +## Hardware perspective + + MBA defines a range of MSRs to support specifying a delay value (Thrtl) per + COS, with details below. + + ``` + +----------------------------+----------------+ + | MSR (per socket) | Address | + +----------------------------+----------------+ + | IA32_L2_QOS_Ext_BW_Thrtl_0 | 0xD50 | + +----------------------------+----------------+ + | ... | ... | + +----------------------------+----------------+ + | IA32_L2_QOS_Ext_BW_Thrtl_n | 0xD50+n | + +----------------------------+----------------+ + ``` + + When context switch happens, the COS ID of domain is written to per-hyper- + thread MSR `IA32_PQR_ASSOC`, and then hardware enforces bandwidth allocation + according to the throttling value stored in the Thrtl MSR register. + +## The relationship between MBA and CAT/CDP + + Generally speaking, MBA is completely independent of CAT/CDP, and any + combination may be applied at any time, e.g. enabling MBA with CAT + disabled. + + But it needs to be noticed that MBA shares COS infrastructure with CAT, + although MBA is enumerated by different CPUID leaf from CAT (which + indicates that the max COS of MBA may be different from CAT). In some + cases, a domain is permitted to have a COS that is beyond one (or more) + of PSR features but within the others. For instance, let's assume the max + COS of MBA is 8 but the max COS of L3 CAT is 16, when a domain is assigned + 9 as COS, the L3 CAT CBM associated to COS 9 would be enforced, but for MBA, + the HW works as default value is set since COS 9 is beyond the max COS (8) + of MBA. + +## Design Overview + +* Core COS/Thrtl association + + When enforcing Memory Bandwidth Allocation, all cores of domains have + the same default Thrtl MSR (COS0) which stores the same Thrtl (0). The + default Thrtl MSR is used only in hypervisor and is transparent to tool stack + and user. + + System administrators can change PSR allocation policy at runtime by + using the tool stack. Since MBA shares COS ID with CAT/CDP, a COS ID + corresponds to a 2-tuple, like [CBM, Thrtl] with only-CAT enabled, when CDP + is enabled, the COS ID corresponds to a 3-tuple, like [Code_CBM, Data_CBM, + Thrtl]. If neither CAT nor CDP is enabled, things are easier, since one COS + ID corresponds to one Thrtl. + +* VCPU schedule + + This part reuses CAT COS infrastructure. + +* Multi-sockets + + Different sockets may have different MBA capabilities (like max COS) + although it is consistent on the same socket. So the capability + of per-socket MBA is specified. + + This part reuses CAT COS infrastructure. + +## Implementation Description + +* Hypervisor interfaces: + + 1. Boot line param: "psr=mba" to enable the feature. + + 2. SYSCTL: + - XEN_SYSCTL_PSR_MBA_get_info: Get system MBA information. + + 3. DOMCTL: + - XEN_DOMCTL_PSR_MBA_OP_GET_THRTL: Get throttling for a domain. + - XEN_DOMCTL_PSR_MBA_OP_SET_THRTL: Set throttling for a domain. + +* xl interfaces: + + 1. psr-mba-show [domain-id] + Show system/domain runtime MBA throttling value. For linear mode, + it shows the decimal value. For non-linear mode, it shows hexadecimal + value. + => XEN_SYSCTL_PSR_MBA_get_info/XEN_DOMCTL_PSR_MBA_OP_GET_THRTL + + 2. psr-mba-set [OPTIONS] + Set bandwidth throttling for a domain. + => XEN_DOMCTL_PSR_MBA_OP_SET_THRTL + + 3. psr-hwinfo + Show PSR HW information, including L3 CAT/CDP/L2 CAT/MBA. + => XEN_SYSCTL_PSR_MBA_get_info + +* Key data structure: + + 1. Feature HW info + + ``` + struct { + unsigned int thrtl_max; + bool linear; + } mba; + + - Member `thrtl_max` + + `thrtl_max` is the max throttling value to be set, i.e. MBA_MAX. + + - Member `linear` + + `linear` means the response of delay value is linear or not. + + As mentioned above, MBA is a member of Intel PSR features, it shares the + base PSR infrastructure in Xen. For example, the 'cos_max' is a common HW + property for all features. So, for other data structure details, please + refer to 'intel_psr_cat_cdp.pandoc'. + +# Limitations + +MBA can only work on HW which supports it (check CPUID). + +# Testing + +We can execute these commands to verify MBA on different HWs supporting them. + +For example: + 1. User can get the MBA hardware info through 'psr-hwinfo' command. From + result, user can know if this hardware works under linear mode or non- + linear mode, the max throttling value (MBA_MAX) and so on. + + root@:~$ xl psr-hwinfo --mba + Memory Bandwidth Allocation (MBA): + Socket ID : 0 + Linear Mode : Enabled + Maximum COS : 7 + Maximum Throttling Value: 90 + Default Throttling Value: 0 + + 2. Then, user can set a throttling value to a domain. For example, set '10', + i.e 10% delay. + + root@:~$ xl psr-mba-set 1 10 + + 3. User can check the current configuration of the domain through + 'psr-mab-show'. For linear mode, the decimal value is shown. + + root@:~$ xl psr-mba-show 1 + Socket ID : 0 + Default THRTL : 0 + ID NAME THRTL + 1 ubuntu14 10 + +# Areas for improvement + +N/A + +# Known issues + +N/A + +# References + +"INTEL RESOURCE DIRECTOR TECHNOLOGY (INTEL RDT) ALLOCATION FEATURES" [Intel 64 and IA-32 Architectures Software Developer Manuals, vol3](http://www.intel.com/content/www/us/en/processors/architectures-software-developer-manuals.html) + +# History + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +2017-01-10 1.0 Xen 4.9 Design document written +2017-07-10 1.1 Xen 4.10 Changes: + 1. Modify data structure according to latest + codes; + 2. Add content for 'Areas for improvement'; + 3. Other minor changes. +2017-08-09 1.2 Xen 4.10 Changes: + 1. Remove a special character to avoid error when + building pandoc. +2017-08-15 1.3 Xen 4.10 Changes: + 1. Add terminology 'HW'. + 2. Change 'COS ID of VCPU' to 'COS ID of domain'. + 3. Change 'COS register' to 'Thrtl MSR'. + 4. Explain the value shown for 'psr-mba-show' under + different modes. + 5. Remove content in 'Areas for improvement'. +2017-08-16 1.4 Xen 4.10 Changes: + 1. Add '<>' for mandatory argument. +2017-08-30 1.5 Xen 4.10 Changes: + 1. Modify words in 'Overview' to make it easier to + understand. + 2. Explain 'linear/non-linear' modes before mention + them. + 3. Explain throttling value more accurate. + 4. Explain 'MBA_MAX'. + 5. Correct some words in 'Design Overview'. + 6. Change 'mba_info' to 'mba' according to code + changes. Also, modify contents of it. + 7. Add context in 'Testing' part to make things + more clear. + 8. Remove 'n<64' to avoid out-of-sync. +2017-09-21 1.6 Xen 4.10 Changes: + 1. Add 'domain-name' as parameter of 'psr-mba-show/ + psr-mba-set'. + 2. Fix some wordings. + 3. Explain how user can know the MBA_MAX. + 4. Move the description of 'Linear mode/Non-linear + mode' into section of 'psr-mba-show'. + 5. Change 'per-thread' to 'per-hyper-thread'. +2017-09-29 1.7 Xen 4.10 Changes: + 1. Correct some words. + 2. Change 'xl psr-mba-set 1 0xa' to + 'xl psr-mba-set 1 10' +2017-10-08 1.8 Xen 4.10 Changes: + 1. Correct some words. +---------- -------- -------- ------------------------------------------- diff --git a/docs/features/livepatch.pandoc b/docs/features/livepatch.pandoc new file mode 100644 index 0000000000..17f1cd0d05 --- /dev/null +++ b/docs/features/livepatch.pandoc @@ -0,0 +1,106 @@ +% Live Patching +% Revision 1 + +\clearpage + +# Basics + +---------------- ---------------------------------------------------- + Status: **Supported** + + Architecture: x86 + + Status: **Tech Preview/Experimental** + + Architecture: ARM + + Component: Hypervisor, toolstack +---------------- ---------------------------------------------------- + + +# Details + +Xen Live Patching has been available as tech preview feature since Xen +4.7 and has now had a couple of releases to stabilize. Xen Live patching +has been used by multiple vendors to fix several real-world security +issues without any severe bugs encountered. Additionally, there are now +tests in OSSTest that test live patching to ensure that no regressions +are introduced. + +Based on the amount of testing and usage it has had, we are ready to +declare live patching as a 'Supported' feature on x86. + +Live patching is slightly peculiar when it comes to support because it +allows the host administrator to break their system rather easily +depending on the content of the live patch. Because of this, it is +worth detailing the scope of security support: + +1) Unprivileged access to live patching operations: + Live patching operations should only be accessible to privileged + guests and it shall be treated as a security issue if this is not + the case. + +2) Bugs in the patch-application code such that vulnerabilities exist + after application: + If a correct live patch is loaded but it is not applied correctly + such that it might result in an insecure system (e.g. not all + functions are patched), it shall be treated as a security issue. + +3) Bugs in livepatch-build-tools creating an incorrect live patch that + results in an insecure host: + If livepatch-build-tools creates an incorrect live patch that + results in an insecure host, this shall not be considered a security + issue. A live patch should be checked to verify that it is valid + before loading. + +4) Loading an incorrect live patch that results in an insecure host or + host crash: + If a live patch (whether created using livepatch-build-tools or some + alternative) is loaded and it results in an insecure host or host + crash due to the content of the live patch being incorrect or the + issue being inappropriate to live patch, this is not considered as a + security issue. + +5) Bugs in the live patch parsing code (the ELF loader): + Bugs in the live patch parsing code such as out-of-bounds reads + caused by invalid ELF files are not considered to be security issues + because the it can only be triggered by a privileged domain. + +6) Bugs which allow a guest to prevent the application of a livepatch: + A guest should not be able to prevent the application of a live + patch. If an unprivileged guest can somehow prevent the application + of a live patch despite pausing it (xl pause ...), it shall be + treated as a security issue. + +Note: It is expected that live patches are tested in a test environment +before being used in production to avoid unexpected issues. In +particular, to avoid the issues described by (3), (4), & (5). + +There are also some generic security questions which are worth asking: + +1) Is guest->host privilege escalation possible? + +The new live patching sysctl subops are only accessible to privileged +domains and this is tested by OSSTest with an XTF test. +There is a caveat -- an incorrect live patch can introduce a guest->host +privilege escalation. + +2) Is guest user->guest kernel escalation possible? + +No, although an incorrect live patch can introduce a guest user->guest +kernel privilege escalation. + +3) Is there any information leakage? + +The new live patching sysctl subops are only accessible to privileged +domains so it is not possible for an unprivileged guest to access the +list of loaded live patches. This is tested by OSSTest with an XTF test. +There is a caveat -- an incorrect live patch can introduce an +information leakage. + +4) Can a Denial-of-Service be triggered? + +There are no known ways that an unprivileged guest can prevent a live +patch from being loaded. +Once again, there is a caveat that an incorrect live patch can introduce +an arbitrary denial of service. diff --git a/docs/features/migration.pandoc b/docs/features/migration.pandoc new file mode 100644 index 0000000000..719925818e --- /dev/null +++ b/docs/features/migration.pandoc @@ -0,0 +1,124 @@ +% Migration +% Revision 2 + +\clearpage + +# Basics +--------------- ------------- + Status: **Supported** + + Architecture: x86 + + Component: Toolstack +--------------- ------------- + +# Overview + +Migration is a mechanism to move a virtual machine while the VM is +running. Live migration moves a running virtual machine between two +physical servers, but the same mechanism can be used for non-live +migration (pause and copy) and suspend/resume from disk. + +# User details + +No hardware requirements, although hypervisor logdirty support is +required for live migration. + +From the command line, `xl migrate/save/restore` are the top level +interactions. e.g. + + xl create my-vm.cfg + xl migrate my-vm localhost + +or + + xl create my-vm.cfg + xl save my-vm /path/to/save/file + xl restore /path/to/save/file + +Xen 4.6 sees the introduction of Migration v2. There is no change for +people using `xl`, although the `libxl` API has had an extension. + +# Technical details + +Migration is formed of several layers. `libxc` is responsible for the +contents of the VM (ram, vcpus, etc) and the live migration loop, while +`libxl` is responsible for items such as emulator state. + +The format of the migration v2 stream is specified in two documents, and +is architecture neutral. Compatibility with legacy streams is +maintained via the `convert-legacy-stream` script which transforms a +legacy stream into a migration v2 stream. + +* Documents + * `docs/specs/libxc-migration-stream.pandoc` + * `docs/specs/libxl-migration-stream.pandoc` +* `libxc` + * `tools/libxc/xc_sr_*.[hc]` +* `libxl` + * `tools/libxl/libxl_stream_{read,write}.c` + * `tools/libxl/libxl_convert_callout.c` +* Scripts + * `tools/python/xen/migration/*.py` + * `tools/python/scripts/convert-legacy-stream` + * `tools/python/scripts/verify-stream-v2` + +## libxl + +With migration v2 support, LIBXL_HAVE_SRM_V2 and LIBXL_HAVE_SRM_V1 +are introduced to indicate support. `domain_restore_params` gains a new +parameter, `stream_version`, which is used to distinguish between legacy and +v2 migration streams, and hence whether legacy conversion is required. + +# Limitations + +Hypervisor logdirty support is incompatible with hardware passthrough, +as IOMMU faults cannot be used to track writes. + +While not a bug in migration specifically, VMs are very sensitive to +changes in cpuid information, and cpuid levelling support currently has +its issues. Extreme care should be taken when migrating VMs between +non-identical CPUs until the cpuid levelling improvements are complete. + +# Testing + +Changes in libxc should be tested with every guest type (32bit PV, 64bit +PV, HVM), while changes in libxl should test HVM guests with both +qemu-traditional and qemu-upstream. + +In general, testing can be done on a single host using `xl +save/restore` or `xl migrate $VM localhost`. + +Any changes to the conversion script should be tested in all upgrade +scenarios, which will involve starting with VMs from Xen 4.5 + +# Areas for improvement + +* Arm support +* Live looping parameters + +# Known issues + +* x86 HVM guest physmap operations (not reflected in logdirty bitmap) +* x86 HVM with PoD pages (attempts to map cause PoD allocations) +* x86 HVM with nested-virt (no relevant information included in the + stream) +* x86 PV ballooning (P2M marked dirty, target frame not marked) +* x86 PV P2M structure changes (not noticed, stale mappings used) for + guests not using the linear p2m layout + +# References + +Xen Developer Summit 2015 Presentation +[video](https://www.youtube.com/watch?v=RwiDeG21lrc) and +[slides](http://events.linuxfoundation.org/sites/events/files/slides/migv2.pdf) +for Migration v2 + +# History + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +2015-10-24 1 Xen 4.6 Document written +2015-12-11 2 Xen 4.7 Support of linear p2m list +---------- -------- -------- ------------------------------------------- diff --git a/docs/features/qemu-deprivilege.pandoc b/docs/features/qemu-deprivilege.pandoc new file mode 100644 index 0000000000..4ef119c821 --- /dev/null +++ b/docs/features/qemu-deprivilege.pandoc @@ -0,0 +1,136 @@ +% QEMU Deprivileging / dm_restrict +% Revision 1 + +\clearpage + +# Basics + +---------------- ---------------------------------------------------- + Status: **Tech Preview** + +Architecture(s): x86 + + Component(s): toolstack + +---------------- ---------------------------------------------------- + +# Overview + +By default, the QEMU device model is run in domain 0. If an attacker +can gain control of a QEMU process, it could easily take control of a +system. + +dm_restrict is a set of operations to restrict QEMU running in domain +0. It consists of two halves: + + 1. Mechanisms to restrict QEMU to only being able to affect its own +domain + 2. Mechanisms to restruct QEMU's ability to interact with domain 0. + +# User details + +## Getting the right versions of software + +Linux: 4.11+ + +Qemu: 3.0+ (Or the version that comes with Xen 4.12+) + +## Setting up a group and userid range + +For maximum security, libxl needs to run the devicemodel for each +domain under a user id (UID) corresponding to its domain id. There +are 32752 possible domain IDs, and so libxl needs 32752 user ids set +aside for it. Setting up a group for all devicemodels to run at is +also recommended. + +The simplest and most effective way to do this is to allocate a +contiguous block of UIDs, and create a single user named +`xen-qemuuser-range-base` with the first UID. For example, under +Debian: + + adduser --system --uid 131072 --group --no-create-home xen-qemuuser-range-base + +Two comments on this method: + + 1. Most modern systems have 32-bit UIDs, and so can in theory go up +to 2^31 (or 2^32 if uids are unsigned). POSIX only guarantees 16-bit +UIDs however; UID 65535 is reserved for an invalid value, and 65534 is +normally allocated to "nobody". + 2. Additionally, some container systems have proposed using the +upper 16 bits of the uid for a container ID. Using a multiple of 2^16 +for the range base (as is done above) will result in all UIDs being +interpreted by such systems as a single container ID. + +Another, less-secure way is to run all QEMUs as the same UID. To do +this, create a user named `xen-qemuuser-shared`; for example: + + adduser --no-create-home --system xen-qemuuser-shared + +A final way to set up a separate process for qemus is to allocate one +UID per VM, and set the UID in the domain config file with the +`device_model_user` argument. For example, suppose you have a VM +named `c6-01`. You might do the following: + + adduser --system --no-create-home --group xen-qemuuser-c6-01 + +And then in your config file, the following line: + + device_model_user="xen-qemuuser-c6-01" + +If you use this method, you should also allocate one "reaper" user to +be used for killing device models: + + adduser --system --no-create-home --group xen-qemuuser-reaper + +NOTE: It is important when using `device_model_user` that EACH VM HAVE +A SEPARATE UID, and that none of these UIDs map to root. xl will +throw an error a uid maps to zero, but not if multiple VMs have the +same uid. Multiple VMs with the same device model uid will cause +problems. + +It is also important that `xen-qemuuser-reaper` not have any processes +associated with it, as they will be destroyed when deprivileged qemu +processes are destroyed. + +## Domain config changes + +The core domain config change is to add the following line to the +domain configuration: + + dm_restrict=1 + +This will perform a number of restrictions, outlined below in the +'Technical details' section. + +# Technical details + +See docs/design/qemu-deprivilege.md for technical details. + +# Limitations + +The following features still need to be implemented: + +* Inserting a new cdrom while the guest is running (xl cdrom-insert) +* Support for qdisk backends + +A number of restrictions still need to be implemented. A compromised +device model may be able to do the following: + +* Delay or exploit weaknesses in the toolstack +* Launch "fork bombs" or other resource exhaustion attacks +* Make network connections on the management network +* Break out of the restrictions after migration + +Additionally, getting PCI passthrough to work securely would require a +significant rework of how passthrough works at the moment. It may be +implemented at some point but is not a near-term priority. + +See SUPPORT.md for security support status. + +# History + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +2018-09-14 1 Xen 4.12 Imported from docs/misc +---------- -------- -------- ------------------------------------------- diff --git a/docs/features/sched_credit.pandoc b/docs/features/sched_credit.pandoc new file mode 100644 index 0000000000..706513de6e --- /dev/null +++ b/docs/features/sched_credit.pandoc @@ -0,0 +1,100 @@ +% Credit Scheduler +% Revision 1 + +\clearpage + +# Basics +---------------- ---------------------------------------------------- + Status: **Supported** + + Component: Hypervisor +---------------- ---------------------------------------------------- + +# Overview + +Credit (also known as Credit1) is the old virtual CPU (vCPU) scheduler +of the Xen hypervisor. + +It is a general purpose, weighted fair-share scheduler. + +# User details + +Xen supports multiple schedulers. Credit is no longer the default. In +order to use it as the Xen scheduler the following parameter should be +passed to the hypervisor at boot: + + `sched=credit` + +Once the system is live, for creating a cpupool with Credit as its +scheduler, either compile a cpupool configuration file, as described +in `docs/man/xlcpupool.cfg.pod.5` (and as exemplified in +`tools/examples/cpupool`), or use just `xl` directly: + + xl cpupool-create name=\"pool1\" sched=\"credit\" cpus=[4,8] + +Two kind of interactions with the scheduler are possible: + +* checking or changing the global parameters, via, e.g.: + * `xl sched-credit -s` + * `xl sched-credit -s -p pool1` + * `xl sched-credit -s -t 20` +* checking or changing a VM's scheduling parameters, via, e.g.: + * `xl sched-credit -d vm1` + * `xl sched-credit -d vm1 -w 512` + +# Technical details + +Implementation entirely lives in the hypervisor. Xen has a pluggable, +hook based, architecture for schedulers. Thanks to this, Credit code +is all contained in `xen/common/sched_credit.c`. + +# Limitations + +In Credit, a vCPU has a priority, a status (i.e., active or inactive), +a weight and some credits... and all these things interact in a rather +involved way. Also, with years of use, things have gotten even more +complex (due to, e.g., the introduction of boosting, caps and vCPU +soft-affinity). + +Dealing with such complexity is starting to be an issue. Odd behavior +or subtle scheduling anomalies, that is not always possible to act upon, +have been identified already. [1][2][3] + +A certain lack of scalability and difficulties and weakness in dealing +with mixed workloads and VMs with low latency requirements are other +known problems. [4] For all these reasons, effort is ongoing to have +Credit2 become the new default scheduler. + +# Testing + +Any change to Credit code must to be tested by doing at least the following: + +* create a few virtual machine and verify that they boot and can + run some basic workload (e.g., login into them and run simple commands), +* shutdown/reboot the virtual machines, +* shutdown the system. + +Ideally, all the above steps should **also** be performed in a configuration +that includes cpupools, better if with pools using different schedulers, and +by also doing the following: + +* move the virtual machines between cpupools. + +# References + +* [potential non-ideal behavior on hyperthreaded systems](https://lists.xenproject.org/archives/html/xen-devel/2014-07/msg01848.html) [1] +* [long standing BOOST vs. migration bug](https://lists.xen.org/archives/html/xen-devel/2015-10/msg02851.html) [2] +* [priority handling issues](https://lists.xenproject.org/archives/html/xen-devel/2016-05/msg01362.html) [3] +* "Scheduler development update", XenSummit Asia 2009 [whitepaper](http://www-archive.xenproject.org/files/xensummit_intel09/George_Dunlap.pdf) [4] +* "Scheduling in Xen" [XPDS15 Presentation](http://events.linuxfoundation.org/sites/events/files/slides/Faggioli_XenSummit.pdf) +* "The Credit Scheduler" [on the Xen-Project wiki](https://wiki.xenproject.org/wiki/Credit_Scheduler) +* "Xen Project Schedulers" [on the Xen-Project wiki](https://wiki.xenproject.org/wiki/Xen_Project_Schedulers) + +# History + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +2016-10-14 1 Xen 4.8 Document written +2019-02-7 3 Xen 4.12 No longer default scheduler +---------- -------- -------- ------------------------------------------- diff --git a/docs/features/sched_credit2.pandoc b/docs/features/sched_credit2.pandoc new file mode 100644 index 0000000000..436ff9f8f6 --- /dev/null +++ b/docs/features/sched_credit2.pandoc @@ -0,0 +1,108 @@ +% Credit2 Scheduler +% Revision 2 + +\clearpage + +# Basics +---------------- ---------------------------------------------------- + Status: **Supported** + + Component: Hypervisor +---------------- ---------------------------------------------------- + +# Overview + +Credit2 is the default virtual CPU (vCPU) scheduler available in the +Xen hypervisor. + +Credit2 was designed as a general purpose scheduler, with particular +focus on improving handling of mixed workloads, scalability and +support for low latency applications inside VMs. + +# User details + +Xen supports multiple schedulers. As said, Credit2 is the default, so +it is used automatically, unless the `sched=$SCHED` (with `$SCHED` +different than `credit2`) parameter is passed to Xen via the +bootloader. + +Other parameters are available for tuning the behavior of Credit2 +(see `docs/misc/xen-command-line.markdown` for a complete list and +for their meaning). + +Once the system is live, for creating a cpupool with Credit2 as +its scheduler, either compile a cpupool configuration file, as +described in `docs/man/xlcpupool.cfg.pod.5` (and as exemplified +in `tools/examples/cpupool`), or use just `xl` directly: + + xl cpupool-create name=\"pool1\" sched=\"credit2\" cpus=[1,2] + +Two kind of interactions with the scheduler are possible: + +* checking or changing the global parameters, via, e.g.: + * `xl sched-credit2 -s` + * `xl sched-credit2 -s -p pool1` + * `xl sched-credit2 -s -r 100` +* checking or changing a VM scheduling parameters, via, e.g.: + * `xl sched-credit2 -d vm1` + * `xl sched-credit2 -d vm1 -w 1024` + +# Technical details + +Implementation entirely lives in the hypervisor. Xen has a pluggable, +hook based, architecture for schedulers. Thanks to this, Credit2 code +is all contained in `xen/common/sched_credit2.c`. + +Global scheduling parameters, such as context switching rate +limiting, is only available from Xen 4.8 onward. In libxl, the +LIBXL_HAVE_SCHED_CREDIT2_PARAMS symbol is introduced to +indicate their availability. + +# Testing + +Any change done in Credit2 wants to be tested by doing at least the +following: + +* boot the system with `sched=credit2`, +* create a few virtual machine and verify that they boot and can + run some basic workload (e.g., login into them and run simple commands), +* shutdown/reboot the virtual machines, +* shutdown/reboot the system. + +Ideally, all the above steps should **also** be performed in a configuration +where Credit2 is used as the scheduler of a cpupool, and by also doing the +following: + +* move a virtual machine inside and outside a Credit2 cpupool. + +# Areas for improvement + +* vCPUs' reservations (similar to caps, but providing a vCPU with guarantees + about some pCPU time it will always be able to execute for); +* benchmarking for assessing the best combination of values for the various + parameters (`sched_credit2_migrate_resist`, `credit2_balance_over`, + `credit2_balance_under`) + +# Known issues + +* I/O oriented benchmarks (like network and disk throughput) have given + contradictory and non-conclusive results so far. Need to run more of + those. + +# References + +* "Scheduler development update", XenSummit Asia 2009 [whitepaper](http://www-archive.xenproject.org/files/xensummit_intel09/George_Dunlap.pdf) +* "Scheduling in Xen" [XPDS15 Presentation](http://events.linuxfoundation.org/sites/events/files/slides/Faggioli_XenSummit.pdf) +* "Scope and Performance of Credit-2 Scheduler" [XPDS16 Presentation](http://www.slideshare.net/xen_com_mgr/xpds16-scope-and-performance-of-credit2-scheduler-anshul-makkar-ctirix-systems-uk-ltd) +* "The Credit2 Scheduler" [on the Xen-Project wiki](https://wiki.xenproject.org/wiki/Credit2_Scheduler_Development) +* "Xen Project Schedulers" [on the Xen-Project wiki](https://wiki.xenproject.org/wiki/Xen_Project_Schedulers) + +# History + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +2016-10-14 1 Xen 4.8 Document written +2017-11-6 2 Xen 4.10 Soft-affinity and caps implemented +2019-02-7 3 Xen 4.12 Made the default scheduler +---------- -------- -------- ------------------------------------------- diff --git a/docs/features/sched_rtds.pandoc b/docs/features/sched_rtds.pandoc new file mode 100644 index 0000000000..4ccf704b53 --- /dev/null +++ b/docs/features/sched_rtds.pandoc @@ -0,0 +1,122 @@ +% RTDS Scheduler +% Revision 1 + +\clearpage + +# Basics +---------------- ---------------------------------------------------- + Status: **Experimental** + + Component: Hypervisor +---------------- ---------------------------------------------------- + +# Overview + +RTDS is one of the virtual CPU (vCPU) scheduler available in the Xen +hypervisor. + +RTDS is a real-time scheduler, so its purpose is enabling +**deterministic** scheduling of the virtual machine's vCPUs. It has +been originally developed in the context of the RT-Xen project. + +# User details + +RTDS is not in use by default. In order to use it as the Xen scheduler +the following parameter should be passed to the hypervisor at boot: + + `sched=rtds` + +Once the system is live, for creating a cpupool with RTDS as its +scheduler, either compile a cpupool configuration file, as described +in `docs/man/xlcpupool.cfg.pod.5` (and as exemplified in +`tools/examples/cpupool`), or use just `xl` directly: + + xl cpupool-create name=\"pool-rt\" sched=\"rtds\" cpus=[4,5,6,8] + +For checking or changing a VM's scheduling parameters from xl, do +as follows: + * `xl sched-rtds -d vm-rt -v all` + * `xl sched-rtds -d vm-rt -v all -p 10000 -b 2500` + +It is possible, for a multiple vCPUs VM, to change the parameters of +each vCPU individually: + * `xl sched-rtds -d vm-rt -v 0 -p 20000 -b 10000 -e 1 -v 1 -p 45000 -b 12000 -e 0` + +# Technical details + +Implementation entirely lives in the hypervisor. Xen has a pluggable, +hook based, architecture for schedulers. Thanks to this, RTDS code +is all contained in `xen/common/sched_rtds.c`. + +In libxl, the availability of the RTDS scheduler is advertised by +the presence of the LIBXL_HAVE_SCHED_RTDS symbol. The ability of +specifying different scheduling parameters for each vcpu has been +introduced later, and is available if the following symbols are defined: + * LIBXL_HAVE_VCPU_SCHED_PARAMS, + * LIBXL_HAVE_SCHED_RTDS_VCPU_PARAMS, + * LIBXL_HAVE_SCHED_RTDS_VCPU_EXTRA. + +# Limitations + +RTDS is a special purpose scheduling. This is by design, and not at +all a limitation, but it is certainly something to keep in mind when +thinking about using it. The purpose of the scheduler is enabling +deterministic and statically analyzable behavior (as per the +real-time academic literature), according to the scheduling parameters +assigned to each vCPU. + +Using RTDS a the Xen scheduler, and/or for general purpose workloads +is definitely possible, but the vCPU scheduling parameters (of both +Domain0 and of the various VMs) would probably require tweaking, with +respect to their default values. + +# Testing + +Any change done in RTDS must be tested by doing the following: + +* create a cpupool with RTDS as its scheduler, +* create a few virtual machines a move them in and out of the pool, +* create a few virtual machines, directly inside the pool, and verify + that they boot and can run some basic workload (e.g., login into them + and run simple commands), +* shutdown/reboot the virtual machines, + +The fact that the system boots fine when passing `sched=rtds` to Xen +should also be verified. + +Finally, to check that the scheduler is working properly (although only +at a macroscopic level), the following should be done: + +* create a VM with 1 vCPU and put it in the RTDS cpupool, +* set the scheduling parameters such as it has a 50% reservation, with + `xl sched-rtds -d vm -v all -p 100000 -b 50000`, +* run a CPU-burning process inside the VM (e.g., `yes`), +* check with `xentop` (in Domain0) that the VM is getting no more than + 50% pCPU time. + +# Areas for improvement + +* performance assessment, especially focusing on what level of real-time + behavior the scheduler enables. + +# Known issues + +* OSSTest reports occasional failures on ARM. + +# References + +* "RT-Xen: Real-Time Virtualization" [XPDS14 Presentation](http://events.linuxfoundation.org/sites/events/files/slides/2014_Xen_Developer_Summit_0.pdf) +* "Scheduling in Xen" [XPDS15 Presentation](http://events.linuxfoundation.org/sites/events/files/slides/Faggioli_XenSummit.pdf) +* [RT-Xen Project](https://sites.google.com/site/realtimexen/) +* [RTDS-Based-Scheduler](https://wiki.xenproject.org/wiki/RTDS-Based-Scheduler) +* "The RTDS Scheduler" [on the Xen-Project wiki](https://wiki.xenproject.org/wiki/RTDS-Based-Scheduler) +* "Xen Project Schedulers" [on the Xen-Project wiki](https://wiki.xenproject.org/wiki/Xen_Project_Schedulers) + +# History + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +2016-10-14 1 Xen 4.8 Document written +2017-08-31 2 Xen 4.10 Revise for work conserving feature +---------- -------- -------- ------------------------------------------- diff --git a/docs/features/template.pandoc b/docs/features/template.pandoc new file mode 100644 index 0000000000..82881e3d21 --- /dev/null +++ b/docs/features/template.pandoc @@ -0,0 +1,75 @@ +% Template for feature documents +% Revision $N + +\clearpage + +This is a suggested template for formatting of a Xen feature document in +tree. + +The purpose of this document is to provide a concrete support statement +for the feature (indicating its security status), as well as brief user +and technical documentation. + +# Basics + +A table with an overview of the support status and applicability. + +---------------- ---------------------------------------------------- + Status: e.g. **Supported**/**Tech Preview**/**Experimental** + +Architecture(s): e.g. x86, arm + + Component(s): e.g. Hypervisor, toolstack, guest + + Hardware: _where applicable_ +---------------- ---------------------------------------------------- + +# Overview + +A short description the feature, similar to an abstract for a +paper/presentation. + +# User details + +Information for a user attempting to use the feature. Should include +how to enable the feature (is it enabled by default? If not, how to turn +it on?), and how to interact with the feature (typically via `xl`). + +# Technical details + +Information for a developer or power user. Should include where to look +in-tree for detailed documents and code. + +# Limitations + +Information concerning incompatibilities with other features or hardware +combinations. + +# Testing + +Information concerning how to properly test changes affecting this feature. + +# Areas for improvement + +List of enhancements which could be undertaken, e.g. to improve the +feature itself, or improve interaction with other features. + +# Known issues + +List of known issues or bugs. For tech preview or experimental +features, this section must contain the list of items needing fixing for +its status to be upgraded. + +# References + +Relevant external references for this feature. + +# History + +A table of changes to the document, in chronological order. + +------------------------------------------------------------------------ +Date Revision Version Notes +---------- -------- -------- ------------------------------------------- +YYYY-MM-DD N Xen X.Y ... +---------- -------- -------- ------------------------------------------- diff --git a/docs/figs/Makefile b/docs/figs/Makefile new file mode 100644 index 0000000000..e128a4364f --- /dev/null +++ b/docs/figs/Makefile @@ -0,0 +1,15 @@ + +XEN_ROOT=$(CURDIR)/../.. +include $(XEN_ROOT)/Config.mk +-include $(XEN_ROOT)/config/Docs.mk + +TARGETS= network-bridge.png network-basic.png + +all: $(TARGETS) + +%.png: %.fig + $(FIG2DEV) -L png $< >$@.tmp + mv -f $@.tmp $@ + +clean: + rm -f *~ *.png diff --git 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The image is displayed in color on +% Postscript viewers or printers that support color, otherwise +% it is displayed as grayscale. +% +/DirectClassPacket +{ + % + % Get a DirectClass packet. + % + % Parameters: + % red. + % green. + % blue. + % length: number of pixels minus one of this color (optional). + % + currentfile color_packet readhexstring pop pop + compression 0 eq + { + /number_pixels 3 def + } + { + currentfile byte readhexstring pop 0 get + /number_pixels exch 1 add 3 mul def + } ifelse + 0 3 number_pixels 1 sub + { + pixels exch color_packet putinterval + } for + pixels 0 number_pixels getinterval +} bind def + +/DirectClassImage +{ + % + % Display a DirectClass image. + % + systemdict /colorimage known + { + columns rows 8 + [ + columns 0 0 + rows neg 0 rows + ] + { DirectClassPacket } false 3 colorimage + } + { + % + % No colorimage operator; convert to grayscale. + % + columns rows 8 + [ + columns 0 0 + rows neg 0 rows + ] + { GrayDirectClassPacket } image + } ifelse +} bind def + +/GrayDirectClassPacket +{ + % + % Get a DirectClass packet; convert to grayscale. + % + % Parameters: + % red + % green + % blue + % length: number of pixels minus one of this color (optional). + % + currentfile color_packet readhexstring pop pop + color_packet 0 get 0.299 mul + color_packet 1 get 0.587 mul add + color_packet 2 get 0.114 mul add + cvi + /gray_packet exch def + compression 0 eq + { + /number_pixels 1 def + } + { + currentfile byte readhexstring pop 0 get + /number_pixels exch 1 add def + } ifelse + 0 1 number_pixels 1 sub + { + pixels exch gray_packet put + } for + pixels 0 number_pixels getinterval +} bind def + +/GrayPseudoClassPacket +{ + % + % Get a PseudoClass packet; convert to grayscale. + % + % Parameters: + % index: index into the colormap. + % length: number of pixels minus one of this color (optional). + % + currentfile byte readhexstring pop 0 get + /offset exch 3 mul def + /color_packet colormap offset 3 getinterval def + color_packet 0 get 0.299 mul + color_packet 1 get 0.587 mul add + color_packet 2 get 0.114 mul add + cvi + /gray_packet exch def + compression 0 eq + { + /number_pixels 1 def + } + { + currentfile byte readhexstring pop 0 get + /number_pixels exch 1 add def + } ifelse + 0 1 number_pixels 1 sub + { + pixels exch gray_packet put + } for + pixels 0 number_pixels getinterval +} bind def + +/PseudoClassPacket +{ + % + % Get a PseudoClass packet. + % + % Parameters: + % index: index into the colormap. + % length: number of pixels minus one of this color (optional). + % + currentfile byte readhexstring pop 0 get + /offset exch 3 mul def + /color_packet colormap offset 3 getinterval def + compression 0 eq + { + /number_pixels 3 def + } + { + currentfile byte readhexstring pop 0 get + /number_pixels exch 1 add 3 mul def + } ifelse + 0 3 number_pixels 1 sub + { + pixels exch color_packet putinterval + } for + pixels 0 number_pixels getinterval +} bind def + +/PseudoClassImage +{ + % + % Display a PseudoClass image. + % + % Parameters: + % class: 0-PseudoClass or 1-Grayscale. + % + currentfile buffer readline pop + token pop /class exch def pop + class 0 gt + { + currentfile buffer readline pop + token pop /depth exch def pop + /grays columns 8 add depth sub depth mul 8 idiv string def + columns rows depth + [ + columns 0 0 + rows neg 0 rows + ] + { currentfile grays readhexstring pop } image + } + { + % + % Parameters: + % colors: number of colors in the colormap. + % colormap: red, green, blue color packets. + % + currentfile buffer readline pop + token pop /colors exch def pop + /colors colors 3 mul def + /colormap colors string def + currentfile colormap readhexstring pop pop + systemdict /colorimage known + { + columns rows 8 + [ + columns 0 0 + rows neg 0 rows + ] + { PseudoClassPacket } false 3 colorimage + } + { + % + % No colorimage operator; convert to grayscale. + % + columns rows 8 + [ + columns 0 0 + rows neg 0 rows + ] + { GrayPseudoClassPacket } image + } ifelse + } ifelse +} bind def + +/DisplayImage +{ + % + % Display a DirectClass or PseudoClass image. + % + % Parameters: + % x & y translation. + % x & y scale. + % label pointsize. + % image label. + % image columns & rows. + % class: 0-DirectClass or 1-PseudoClass. + % compression: 0-none or 1-RunlengthEncoded. + % hex color packets. + % + gsave + /buffer 512 string def + /byte 1 string def + /color_packet 3 string def + /pixels 768 string def + + currentfile buffer readline pop + token pop /x exch def + token pop /y exch def pop + x y translate + currentfile buffer readline pop + token pop /x exch def + token pop /y exch def pop + currentfile buffer readline pop + token pop /pointsize exch def pop + /Times-Roman findfont pointsize scalefont setfont + x y scale + currentfile buffer readline pop + token pop /columns exch def + token pop /rows exch def pop + currentfile buffer readline pop + token pop /class exch def pop + currentfile buffer readline pop + token pop /compression exch def pop + class 0 gt 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+fffffffffffff8e6d4cec2b6b6aa9e9e9e9e9e9e9e9eb6b6b6c8cee0e6ffffffffffffff +ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff +ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff +ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff +ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff +ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff +ffffffffffffffffffffffffffffffffffffffffffffff +end +%%PageTrailer +%%Trailer +%%EOF diff --git a/docs/gen-html-index b/docs/gen-html-index new file mode 100644 index 0000000000..4fad6db974 --- /dev/null +++ b/docs/gen-html-index @@ -0,0 +1,177 @@ +#!/usr/bin/env perl + +# +# Generate indexes for html documentation +# + +use strict; +use warnings; + +use Getopt::Long; +use IO::File; +use File::Basename; + +Getopt::Long::Configure('bundling'); + +@ARGV >= 2 or die; + +our @docs; +our @dirs; +our %index; + +our $outdir; +our $debug; + +GetOptions("i=s" => sub { read_index(@_);}, + "D" => \$debug) + or die; + +($outdir,@docs) = @ARGV; + +sub write_file ($$) { + my ($opath, $odata) = @_; + print STDOUT "Writing: $opath\n"; + my $out = new IO::File "$opath.new", '>' or die "$opath $!"; + print $out $odata or die $!; + rename "$opath.new", "$opath" or die "$opath $!"; +} + +sub make_page ($$$) { + my ($file,$title,$content) = @_; + my $o = ''; + my $h1; + if ( $title eq "" ) + { + $title = $h1 = "Xen Documentation"; + } + else + { + $h1 = "Xen Documentation - $title"; + $title = "Xen Documentation - $title"; + } + $o .= <$title + +

$h1

+
    +$content +
+ +END + write_file($file, $o); +} + +sub make_linktext ($) { + my ($l) = @_; + return "$1($2)" if $l =~ m,^man/(.*)\.([0-9].*)\.html,; + $l =~ s/.(?:html|txt)$//g; + return $index{$l} if exists $index{$l}; + + my $from_html; + eval { + require HTML::TreeBuilder::XPath; + my $tree = new HTML::TreeBuilder::XPath; + my $f = "$outdir/$l.html"; + open F, '<', $f or die "$l $f $!"; + $tree->parse_file(\*F) or die; + close F; + $from_html = $tree->findvalue("/html/head/title"); + }; + print "$l: get title: $@" if $@ && $debug; + return $from_html if $from_html; + + return basename($l); +} + +sub make_link ($$) { + my ($ref,$base) = @_; + + my $txt = make_linktext($ref); + $ref =~ s,^$base/,, if $base; #/ + + return "
  • $txt
    • \n"; +} + +sub make_links ($@) { + my ($dir,@docs) = @_; + my $idx = ''; + foreach my $of (sort { make_linktext($a) cmp make_linktext($b) } @docs) { + $idx .= make_link($of,$dir); + } + return $idx; +} + +sub read_index ($$) { + my ($opt, $val) = @_; + my $idx = new IO::File "$val", '<' or die "$val $!"; + while ($_ = $idx->getline()) { + s/^\s+//; + s/\s+$//; + next if m/^\#/; + next unless m/\S/; + m/^(\S+)\s+(\S.*)$/ or die; + $index{$1} = $2; + } +} + +sub uniq (@) { + my %h; + foreach (@_) { $h{$_} = 1; } + return keys %h; +} + +for (@docs) { s,^\Q$outdir\E/,, } + +@docs = grep { -e "$outdir/$_" && (make_linktext($_) ne "NO-INDEX") } @docs; + +my $top = ''; + +# Return a list of all directories leading to $path +sub dirs($) +{ + my ($path) = @_; + my @dirs; + while ( $path =~ m,/, ) + { + $path =~ m,/([^/]+)$,; + push @dirs, $`;#` + $path = $`;#` + } + return @dirs; +} + +foreach my $of (grep { !m{/} } @docs) { + $top .= make_link($of,''); +} + +foreach my $od (sort { $a cmp $b } uniq map { dirs($_) } @docs) { + my @d = (grep /^\Q$od\E/, @docs); + if ( @d == 1 and $d[0] eq "$od/index.html" ) + { + next if $d[0] =~ m,/,;#/ linked to from the subdirectory entry. + $top .= make_link("$od/index.html", 0); + } + else + { + my $links = make_links(undef,@d); + my $secttitle = make_linktext($od); + $top .= <$secttitle +
      +$links +
    +END + + $links = make_links($od,@d); + my $idx = ''; + $idx .= <$secttitle +
      +$links +
    +END + make_page("$outdir/$od/index.html", $secttitle, $idx); + } +} + +make_page("$outdir/index.html", "", $top); diff --git a/docs/glossary.rst b/docs/glossary.rst new file mode 100644 index 0000000000..8ddbdab160 --- /dev/null +++ b/docs/glossary.rst @@ -0,0 +1,52 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +Glossary +======== + +.. Terms should appear in alphabetical order + +.. glossary:: + + control domain + A :term:`domain`, commonly dom0, with the permission and responsibility + to create and manage other domains on the system. + + domain + A domain is Xen's unit of resource ownership, and generally has at the + minimum some RAM and virtual CPUs. + + The terms :term:`domain` and :term:`guest` are commonly used + interchangeably, but they mean subtly different things. + + A guest is a single, end user, virtual machine. + + In some cases, e.g. during live migration, one guest will be comprised of + two domains for a period of time, while it is in transit. + + domid + The numeric identifier of a running :term:`domain`. It is unique to a + single instance of Xen, used as the identifier in various APIs, and is + typically allocated sequentially from 0. + + guest + The term 'guest' has two different meanings, depending on context, and + should not be confused with :term:`domain`. + + When discussing a Xen system as a whole, a 'guest' refer to a virtual + machine which is the "useful output" of running the system in the first + place (e.g. an end-user VM). Virtual machines providing system services, + (e.g. the control and/or hardware domains), are not considered guests in + this context. + + In the code, "guest context" and "guest state" is considered in terms of + the CPU architecture, and contrasted against hypervisor context/state. + In this case, it refers to all code running lower privilege privilege + level the hypervisor. As such, it covers all domains, including ones + providing system services. + + hardware domain + A :term:`domain`, commonly dom0, which shares responsibility with Xen + about the system as a whole. + + By default it gets all devices, including all disks and network cards, so + is responsible for multiplexing guest I/O. diff --git a/docs/guest-guide/index.rst b/docs/guest-guide/index.rst new file mode 100644 index 0000000000..5455c67479 --- /dev/null +++ b/docs/guest-guide/index.rst @@ -0,0 +1,9 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +Guest documentation +=================== + +.. toctree:: + :maxdepth: 2 + + x86/index diff --git a/docs/guest-guide/x86/hypercall-abi.rst b/docs/guest-guide/x86/hypercall-abi.rst new file mode 100644 index 0000000000..14c48929d7 --- /dev/null +++ b/docs/guest-guide/x86/hypercall-abi.rst @@ -0,0 +1,129 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +Hypercall ABI +============= + +Hypercalls are system calls to Xen. Two modes of guest operation are +supported, and up to 6 individual parameters are supported. + +Hypercalls may only be issued by kernel-level software [1]_. + +Registers +--------- + +The registers used for hypercalls depends on the operating mode of the guest. + +.. list-table:: + :header-rows: 1 + + * - ABI + - Hypercall Index + - Parameters (1 - 6) + - Result + + * - 64bit + - RAX + - RDI RSI RDX R10 R8 R9 + - RAX + + * - 32bit + - EAX + - EBX ECX EDX ESI EDI EBP + - EAX + +32 and 64bit PV guests have an ABI fixed by their guest type. The ABI for an +HVM guest depends on whether the vCPU is operating in a 64bit segment or not +[2]_. + + +Parameters +---------- + +Different hypercalls take a different number of parameters. Each hypercall +potentially clobbers each of its parameter registers; a guest may not rely on +the parameter registers staying the same. A debug build of Xen checks this by +deliberately poisoning the parameter registers before returning back to the +guest. + + +Mode transfer +------------- + +The exact sequence of instructions required to issue a hypercall differs +between virtualisation mode and hardware vendor. + +.. list-table:: + :header-rows: 1 + + * - Guest + - Transfer instruction + + * - 32bit PV + - INT 0x82 + + * - 64bit PV + - SYSCALL + + * - Intel HVM + - VMCALL + + * - AMD HVM + - VMMCALL + +To abstract away the details, Xen implements an interface known as the +Hypercall Page. This allows a guest to make a hypercall without needing to +perform mode-specific or vendor-specific setup. + + +Hypercall Page +============== + +The hypercall page is a page of guest RAM into which Xen will write suitable +transfer stubs. + +Creating a hypercall page is an isolated operation from Xen's point of view. +It is the guests responsibility to ensure that the hypercall page, once +written by Xen, is mapped with executable permissions so it may be used. +Multiple hypercall pages may be created by the guest, if it wishes. + +The stubs are arranged by hypercall index, and start on 32-byte boundaries. +To invoke a specific hypercall, ``call`` the relevant stub [3]_: + +.. code-block:: none + + call hypercall_page + index * 32 + +There result is an ABI which is invariant of the exact operating mode or +hardware vendor. This is intended to simplify guest kernel interfaces by +abstracting away the details of how it is currently running. + + +Creating Hypercall Pages +------------------------ + +Guests which are started using the PV boot protocol may set set +``XEN_ELFNOTE_HYPERCALL_PAGE`` to have the nominated page written as a +hypercall page during construction. This mechanism is common for PV guests, +and allows hypercalls to be issued with no additional setup. + +Any guest can locate the Xen CPUID leaves and read the *hypercall transfer +page* information, which specifies an MSR that can be used to create +additional hypercall pages. When a guest physical address is written to the +MSR, Xen writes a hypercall page into the nominated guest page. This +mechanism is common for HVM guests which are typically started via legacy +means. + + +.. rubric:: Footnotes + +.. [1] For HVM guests, ``HVMOP_guest_request_vm_event`` may be configured to + be usable from userspace, but this behaviour is not default. + +.. [2] While it is possible to use compatibility mode segments in a 64bit + kernel, hypercalls issues from such a mode will be interpreted with the + 32bit ABI. Such a setup is not expected in production scenarios. + +.. [3] ``HYPERCALL_iret`` is special. It is only implemented for PV guests + and takes all its parameters on the stack. This stub should be + ``jmp``'d to, rather than ``call``'d. HVM guests have this stub + implemented as ``ud2a`` to prevent accidental use. diff --git a/docs/guest-guide/x86/index.rst b/docs/guest-guide/x86/index.rst new file mode 100644 index 0000000000..502968490d --- /dev/null +++ b/docs/guest-guide/x86/index.rst @@ -0,0 +1,9 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +x86 +=== + +.. toctree:: + :maxdepth: 2 + + hypercall-abi diff --git a/docs/hypervisor-guide/code-coverage.rst b/docs/hypervisor-guide/code-coverage.rst new file mode 100644 index 0000000000..49c4a8ad3b --- /dev/null +++ b/docs/hypervisor-guide/code-coverage.rst @@ -0,0 +1,103 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +Code Coverage +============= + +Xen can be compiled with coverage support. When configured, Xen will record +the coverage of its own basic blocks. Being a piece of system software rather +than a userspace, it can't automatically write coverage out to the filesystem, +so some extra steps are required to collect and process the data. + +.. warning:: + + ARM doesn't currently boot when the final binary exceeds 2MB in size, + and the coverage build tends to exceed this limit. + + +Compiling Xen +------------- + +Coverage support is dependent on the compiler and toolchain used. As Xen +isn't a userspace application, it can't use the compiler supplied library, and +instead has to provide some parts of the implementation itself. + +For x86, coverage support was introduced with GCC 3.4 or later, and Clang 3.9 +or later, and Xen is compatible with these. However, the compiler internal +formats do change occasionally, and this may involve adjustments to Xen. +While we do our best to keep up with these changes, Xen may not be compatible +with bleeding edge compilers. + +To build with coverage support, enable ``CONFIG_COVERAGE`` in Kconfig. The +build system will automatically select the appropriate format based on the +compiler in use. + +The resulting binary will record its own coverage while running. + + +Accessing the raw coverage data +------------------------------- + +The ``SYSCTL_coverage_op`` hypercall is used to interact with the coverage +data. A dom0 userspace helper, ``xenconv`` is provided as well, which thinly +wraps this hypercall. + +The ``read`` subcommand can be used to obtain the raw coverage data:: + + [root@host ~]# xencov read > coverage.dat + +This is toolchain-specific data and needs to be fed back to the appropriate +programs to post-process. + +Alternatively, the ``reset`` subcommand can be used reset all counters back to +0:: + + [root@host ~]# xencov reset + + +GCC coverage +------------ + +A build using GCC's coverage will result in ``*.gcno`` artefact for every +object file. The raw coverage data needs splitting to form the matching +``*.gcda`` files. + +An example of how to view the data is as follows. It uses ``lcov`` which is a +graphical frontend to ``gcov``. + +* Obtain the raw coverage data from the test host, and pull it back to the + build working tree. +* Use ``xencov_split`` to extract the ``*.gcda`` files. Note that full build + paths are used by the tools, so splitting needs to output relative to ``/``. +* Use ``geninfo`` to post-process the raw data. +* Use ``genhtml`` to render the results as HTML. +* View the results in a browser. + +:: + + xen.git/xen$ ssh root@host xencov read > coverage.dat + xen.git/xen$ ../tools/xencov_split coverage.dat --output-dir=/ + xen.git/xen$ geninfo . -o cov.info + xen.git/xen$ genhtml cov.info -o cov/ + xen.git/xen$ $BROWSER cov/index.html + +Clang coverage +-------------- + +An example of how to view the data is as follows. + +* Obtain the raw coverage data from the test host, and pull it back to the + build working tree. +* Use ``llvm-profdata`` to post-process the raw data. +* Use ``llvm-cov show`` in combination with ``xen-syms`` from the build to + render the results as HTML. +* View the results in a browser. + +:: + + xen.git/xen$ ssh root@host xencov read > xen.profraw + xen.git/xen$ llvm-profdata merge xen.profraw -o xen.profdata + xen.git/xen$ llvm-cov show -format=html -output-dir=cov/ xen-syms -instr-profile=xen.profdata + xen.git/xen$ $BROWSER cov/index.html + +Full documentation on Clang's coverage capabilities can be found at: +https://clang.llvm.org/docs/SourceBasedCodeCoverage.html diff --git a/docs/hypervisor-guide/index.rst b/docs/hypervisor-guide/index.rst new file mode 100644 index 0000000000..e4393b0697 --- /dev/null +++ b/docs/hypervisor-guide/index.rst @@ -0,0 +1,11 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +Hypervisor documentation +======================== + +.. toctree:: + :maxdepth: 2 + + code-coverage + + x86/index diff --git a/docs/hypervisor-guide/x86/how-xen-boots.rst b/docs/hypervisor-guide/x86/how-xen-boots.rst new file mode 100644 index 0000000000..ca77d7c8a3 --- /dev/null +++ b/docs/hypervisor-guide/x86/how-xen-boots.rst @@ -0,0 +1,101 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +How Xen Boots +============= + +This is an at-a-glance reference of Xen's booting capabilities and +expectations. + + +Build +----- + +A build of xen produces ``xen.gz`` and optionally ``xen.efi`` as final +artefacts. + + * For BIOS, Xen supports the Multiboot 1 and 2 protocols. + + * For EFI, Xen supports Multiboot 2 with EFI extensions, and native EFI64. + + * For virtualisation, Xen supports starting directly with the PVH boot + protocol. + + +Objects +~~~~~~~ + +To begin with, most object files are compiled and linked. This includes the +Multiboot 1 and 2 headers and entrypoints, including the Multiboot 2 tags for +EFI extensions. When ``CONFIG_PVH_GUEST`` is selected at build time, this +includes the PVH entrypoint and associated ELF notes. + +Depending on whether the compiler supports ``__attribute__((__ms_abi__))`` or +not, either an EFI stub is included which nops/fails applicable setup and +runtime calls, or full EFI support is included. + + +Protocols and entrypoints +~~~~~~~~~~~~~~~~~~~~~~~~~ + +All headers and tags are built in ``xen/arch/x86/boot/head.S`` + +The Multiboot 1 headers request aligned modules and memory information. Entry +is via the start of the binary image, which is the ``start`` symbol. This +entrypoint must be started in 32bit mode. + +The Multiboot 2 headers are more flexible, and in addition request that the +image be loaded as high as possible below the 4G boundary, with 2M alignment. +Entry is still via the ``start`` symbol as with MB1, and still in 32bit mode. + +Headers for the EFI MB2 extensions are also present. These request that +``ExitBootServices()`` not be called, and register ``__efi_mb2_start`` as an +alternative entrypoint, entered in 64bit mode. + +If ``CONFIG_PVH_GUEST`` was selected at build time, an Elf note is included +which indicates the ability to use the PVH boot protocol, and registers +``__pvh_start`` as the entrypoint, entered in 32bit mode. + + +xen.gz +~~~~~~ + +The objects are linked together to form ``xen-syms`` which is an ELF64 +executable with full debugging symbols. ``xen.gz`` is formed by stripping +``xen-syms``, then repackaging the result as an ELF32 object with a single +load section at 2MB, and ``gzip``-ing the result. Despite the ELF32 having a +fixed load address, its contents are relocatable. + +Any bootloader which unzips the binary and follows the ELF headers will place +it at the 2M boundary and jump to ``start`` which is the identified entry +point. However, Xen depends on being entered with the MB1 or MB2 protocols, +and will terminate otherwise. + +The MB2+EFI entrypoint depends on being entered with the MB2 protocol, and +will terminate if the entry protocol is wrong, or if EFI details aren't +provided, or if EFI Boot Services are not available. + + +xen.efi +~~~~~~~ + +When a PEI-capable toolchain is found, the objects are linked together and a +PE32+ binary is created. It can be run directly from the EFI shell, and has +``efi_start`` as its entry symbol. + +.. note:: + + xen.efi does contain all MB1/MB2/PVH tags included in the rest of the + build. However, entry via anything other than the EFI64 protocol is + unsupported, and won't work. + + +Boot +---- + +Xen, once loaded into memory, identifies its position in order to relocate +system structures. For 32bit entrypoints, this necessarily requires a call +instruction, and therefore a stack, but none of the ABIs provide one. + +Overall, given that on a BIOS-based system, the IVT and BDA occupy the first +5/16ths of the first page of RAM, with the rest free to use, Xen assumes the +top of the page is safe to use. diff --git a/docs/hypervisor-guide/x86/index.rst b/docs/hypervisor-guide/x86/index.rst new file mode 100644 index 0000000000..c10cd1d7c0 --- /dev/null +++ b/docs/hypervisor-guide/x86/index.rst @@ -0,0 +1,9 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +x86 +=== + +.. toctree:: + :maxdepth: 2 + + how-xen-boots diff --git a/docs/index.rst b/docs/index.rst new file mode 100644 index 0000000000..b75487a05d --- /dev/null +++ b/docs/index.rst @@ -0,0 +1,61 @@ +.. SPDX-License-Identifier: CC-BY-4.0 + +The Xen Hypervisor documentation +================================ + +.. note:: + + Xen's Sphinx/RST documentation is a work in progress. The existing + documentation can be found at https://xenbits.xen.org/docs/ + +Xen is an open source, bare metal hypervisor. It runs as the most privileged +piece of software on the system, and shares the resources of the hardware +between virtual machines. See :doc:`admin-guide/introduction` for an +introduction to a Xen system. + +User documentation +------------------ + +This is documentation for an administrator of a Xen system. It is intended +for someone who is not necesserily a developer, has installed Xen from their +preferred distribution, and is attempting to run virtual machines and +configure the system. + +.. toctree:: + :maxdepth: 2 + + admin-guide/index + + +Guest documentation +------------------- + +This documentation concerns the APIs and ABIs available to guests. It is +intended for OS developers trying to use a Xen feature, and for Xen developers +to avoid breaking things. + +.. toctree:: + :maxdepth: 3 + + guest-guide/index + + +Hypervisor developer documentation +---------------------------------- + +This is documentation for a hypervisor developer. It is intended for someone +who is building Xen from source, and is running the new hypervisor in some +kind of development environment. + +.. toctree:: + :maxdepth: 2 + + hypervisor-guide/index + + +Miscellanea +----------- + +.. toctree:: + + glossary diff --git a/docs/man/xen-pci-device-reservations.7.pod b/docs/man/xen-pci-device-reservations.7.pod new file mode 100644 index 0000000000..9ddf3a18ad --- /dev/null +++ b/docs/man/xen-pci-device-reservations.7.pod @@ -0,0 +1,89 @@ +=head1 NAME + +xen-pci-device-reservations - Xen PCI device ID registry + +=head1 Description + +PCI vendor ID 0x5853 has been reserved for use by Xen systems in order to +advertise certain virtual hardware to guest virtual machines. The primary +use of this is with device ID 0x0001 to advertise the Xen Platform PCI +device - the presence of this virtual device enables a guest Operating +System (subject to the availability of suitable drivers) to make use of +paravirtualisation features such as disk and network devices etc. + +Some Xen vendors wish to provide alternative and/or additional guest drivers +that can bind to virtual devices[1]. This may be done using the Xen PCI +vendor ID of 0x5853 and Xen-vendor/device specific PCI device IDs. This file +records reservations made within the device ID range in order to avoid +multiple Xen vendors using conflicting IDs. + +=head1 Guidelines + +=over 4 + +=item 1. A vendor may request a range of device IDs by submitting a patch to + this file. + +=item 2. Vendor allocations should be in the range 0xc000-0xfffe to reduce the + possibility of clashes with community IDs assigned from the bottom up. + +=item 3. The vendor is responsible for allocations within the range and should + try to record specific device IDs in PCI ID databases such as + https://pci-ids.ucw.cz and https://devicehunt.com + +=back + +=head1 Reservations + + range | vendor/product + --------------+-------------------------------------------------------------- + 0x0001 | (Xen Platform PCI device) + 0x0002 | Citrix XenServer (grandfathered allocation for XenServer 6.1) + 0xc000-0xc0ff | Citrix XenServer + 0xc100-0xc1ff | Citrix XenClient + 0xc200-0xc2ff | XCP-ng Project (https://xcp-ng.org) + +=head1 Notes + +=over 4 + +=item 1. + +Upstream QEMU provides a parameterized device called xen-pvdevice that +can be used to host guest drivers. Execute: + + qemu-system-i386 -device xen-pvdevice,help + +for a list of all parameters. The following parameters are relevant to +driver binding: + +=over 4 + +=item vendor-id (default 0x5853) + +The PCI vendor ID and subsystem vendor ID of the device. + +=item device-id (must be specified) + +The PCI device ID and subsystem device ID of the device. + +=item revision (default 0x01) + +The PCI revision of the device + +=back + +Also the size parameter (default 0x400000) can be used to specify the +size of the single MMIO BAR that the device exposes. This area may be +used by drivers for mapping grant tables, etc. + +Note that the presence of the Xen Platform PCI device is generally a +pre-requisite for an additional xen-pvdevice as it is the platform +device that provides that IO ports necessary for unplugging emulated +devices. See hvm-emulated-unplug.markdown for details of the IO ports +and unplug protocol. + +libxl provides support for creation of a single additional xen-pvdevice. +See the vendor_device parameter in xl.cfg(5). + +=back diff --git a/docs/man/xen-pv-channel.7.pod b/docs/man/xen-pv-channel.7.pod new file mode 100644 index 0000000000..ab4577d1da --- /dev/null +++ b/docs/man/xen-pv-channel.7.pod @@ -0,0 +1,189 @@ +=encoding utf8 + +=head1 NAME + +xen-pv-channel - Xen PV Channels + +=head1 DESCRIPTION + +A channel is a low-bandwidth private byte stream similar to a serial +link. Typical uses of channels are + +=over + +=item 1. + +to provide initial configuration information to a VM on boot +(example use: CloudStack's cloud-early-config service) + + +=item 2. + +to signal/query an in-guest agent +(example use: oVirt's guest agent) + + +=back + +Channels are similar to virtio-serial devices and emulated serial links. +Channels are intended to be used in the implementation of libvirt s +when running on Xen. + +Note: if an application requires a high-bandwidth link then it should use +vchan instead. + + +=head2 How to use channels: an example + +Consider a cloud deployment where VMs are cloned from pre-made templates, +and customised on first boot by an in-guest agent which sets the IP address, +hostname, ssh keys etc. To install the system the cloud administrator would +first: + +=over + +=item 1. + +Install a guest as normal (no channel configuration necessary) + + +=item 2. + +Install the in-guest agent specific to the cloud software. This will +prepare the guest to communicate over the channel, and also prepare +the guest to be cloned safely (sometimes known as "sysprepping") + + +=item 3. + +Shutdown the guest + + +=item 4. + +Register the guest as a template with the cloud orchestration software + + +=item 5. + +Install the cloud orchestration agent in dom0 + + +=back + +At runtime, when a cloud tenant requests that a VM is created from the template, +the sequence of events would be: (assuming a Linux domU) + +=over + +=item 1. + +A VM is "cloned" from the template + + +=item 2. + +A unique Unix domain socket path in dom0 is allocated +(e.g. /my/cloud/software/talk/to/domain/) + + +=item 3. + +Domain configuration is created for the VM, listing the channel +name expected by the in-guest agent. In xl syntax this would be: + +channel = [ "connection=socket, name=org.my.cloud.software.agent.version1, path = /my/cloud/software/talk/to/domain/" ] + +=item 4. + +The VM is started + + +=item 5. + +In dom0 the cloud orchestration agent connects to the Unix domain +socket, writes a handshake message and waits for a reply + + +=item 6. + +Assuming the guest kernel has CONFIG_HVC_XEN_FRONTEND set then the console +driver will generate a hotplug event + + +=item 7. + +A udev rule is activated by the hotplug event. + +The udev rule would look something like: + +SUBSYSTEM=="xen", DEVPATH=="/devices/console-[0-9]", RUN+="xen-console-setup" + +where the "xen-console-setup" script would read the channel name and +make a symlink in /dev/xen-channel/org.my.cloud.software.agent.version1 +pointing to /dev/hvcN. N is the same number as the number in "/devices/console-[0-9]". +In other words, "/devices/console-2" maps to /dev/hvc2. + + +=item 8. + +The in-guest agent uses inotify to see the creation of the /dev/xen-channel +symlink and opens the device. + + +=item 9. + +The in-guest agent completes the handshake with the dom0 agent + + +=item 10. + +The dom0 agent transmits the unique VM configuration: hostname, IP +address, ssh keys etc etc + + +=item 11. + +The in-guest agent receives the configuration and applies it. + + +=back + +Using channels avoids having to use a temporary disk device or network +connection. + + +=head2 Design recommendations and pitfalls + +It's necessary to install channel-specific software (an "agent") into the guest +before you can use a channel. By default a channel will appear as a device +which could be mistaken for a serial port or regular console. It is known +that some software will proactively seek out serial ports and issue AT commands +at them; make sure such software is disabled! + +Since channels are identified by names, application authors must ensure their +channel names are unique to avoid clashes. We recommend that channel names +include parts unique to the application such as a domain names. To assist +prevent clashes we recommend authors add their names to our global channel +registry at the end of this document. + + +=head2 Limitations + +Hotplug and unplug of channels is not currently implemented. + + +=head2 Channel name registry + +It is important that channel names are globally unique. To help ensure +that no-one's name clashes with yours, please add yours to this list. + + Key: + N: Name + C: Contact + D: Short description of use, possibly including a URL to your software or API + + N: org.xenproject.guest.clipboard.0.1 + C: David Scott + D: Share clipboard data via an in-guest agent. See: + https://wiki.xenproject.org/wiki/Clipboard_sharing_protocol diff --git a/docs/man/xen-tscmode.7.pod b/docs/man/xen-tscmode.7.pod new file mode 100644 index 0000000000..1d81a3fe18 --- /dev/null +++ b/docs/man/xen-tscmode.7.pod @@ -0,0 +1,284 @@ +=head1 NAME + +xen-tscmode - Xen TSC (time stamp counter) and timekeeping discussion + +=head1 OVERVIEW + +As of Xen 4.0, a new config option called tsc_mode may be specified +for each domain. The default for tsc_mode handles the vast majority +of hardware and software environments. This document is targeted +for Xen users and administrators that may need to select a non-default +tsc_mode. + +Proper selection of tsc_mode depends on an understanding not only of +the guest operating system (OS), but also of the application set that will +ever run on this guest OS. This is because tsc_mode applies +equally to both the OS and ALL apps that are running on this +domain, now or in the future. + +Key questions to be answered for the OS and/or each application are: + +=over 4 + +=item * + +Does the OS/app use the rdtsc instruction at all? +(We will explain below how to determine this.) + +=item * + +At what frequency is the rdtsc instruction executed by either the OS +or any running apps? If the sum exceeds about 10,000 rdtsc instructions +per second per processor, we call this a "high-TSC-frequency" +OS/app/environment. (This is relatively rare, and developers of OS's +and apps that are high-TSC-frequency are usually aware of it.) + +=item * + +If the OS/app does use rdtsc, will it behave incorrectly if "time goes +backwards" or if the frequency of the TSC suddenly changes? If so, +we call this a "TSC-sensitive" app or OS; otherwise it is "TSC-resilient". + +=back + +This last is the US$64,000 question as it may be very difficult +(or, for legacy apps, even impossible) to predict all possible +failure cases. As a result, unless proven otherwise, any app +that uses rdtsc must be assumed to be TSC-sensitive and, as we +will see, this is the default starting in Xen 4.0. + +Xen's new tsc_mode parameter determines the circumstances under which +the family of rdtsc instructions are executed "natively" vs emulated. +Roughly speaking, native means rdtsc is fast but TSC-sensitive apps +may, under unpredictable circumstances, run incorrectly; emulated means +there is some performance degradation (unobservable in most cases), +but TSC-sensitive apps will always run correctly. Prior to Xen 4.0, +all rdtsc instructions were native: "fast but potentially incorrect." +Starting at Xen 4.0, the default is that all rdtsc instructions are +"correct but potentially slow". The tsc_mode parameter in 4.0 provides +an intelligent default but allows system administrator's to adjust +how rdtsc instructions are executed differently for different domains. + +The non-default choices for tsc_mode are: + +=over 4 + +=item * B (always emulate). + +All rdtsc instructions are emulated; this is the best choice when +TSC-sensitive apps are running and it is necessary to understand +worst-case performance degradation for a specific hardware environment. + +=item * B (never emulate). + +This is the same as prior to Xen 4.0 and is the best choice if it +is certain that all apps running in this VM are TSC-resilient and +highest performance is required. + +=item * B (PVRDTSCP). + +This mode has been removed. + +=back + +If tsc_mode is left unspecified (or set to B), a hybrid +algorithm is utilized to ensure correctness while providing the +best performance possible given: + +=over 4 + +=item * + +the requirement of correctness, + +=item * + +the underlying hardware, and + +=item * + +whether or not the VM has been saved/restored/migrated + +=back + +To understand this in more detail, the rest of this document must +be read. + +=head1 DETERMINING RDTSC FREQUENCY + +To determine the frequency of rdtsc instructions that are emulated, +an "xl" command can be used by a privileged user of domain0. The +command: + + # xl debug-key s; xl dmesg | tail + +provides information about TSC usage in each domain where TSC +emulation is currently enabled. + +=head1 TSC HISTORY + +To understand tsc_mode completely, some background on TSC is required: + +The x86 "timestamp counter", or TSC, is a 64-bit register on each +processor that increases monotonically. Historically, TSC incremented +every processor cycle, but on recent processors, it increases +at a constant rate even if the processor changes frequency (for example, +to reduce processor power usage). TSC is known by x86 programmers +as the fastest, highest-precision measurement of the passage of time +so it is often used as a foundation for performance monitoring. +And since it is guaranteed to be monotonically increasing and, at +64 bits, is guaranteed to not wraparound within 10 years, it is +sometimes used as a random number or a unique sequence identifier, +such as to stamp transactions so they can be replayed in a specific +order. + +On most older SMP and early multi-core machines, TSC was not synchronized +between processors. Thus if an application were to read the TSC on +one processor, then was moved by the OS to another processor, then read +TSC again, it might appear that "time went backwards". This loss of +monotonicity resulted in many obscure application bugs when TSC-sensitive +apps were ported from a uniprocessor to an SMP environment; as a result, +many applications -- especially in the Windows world -- removed their +dependency on TSC and replaced their timestamp needs with OS-specific +functions, losing both performance and precision. On some more recent +generations of multi-core machines, especially multi-socket multi-core +machines, the TSC was synchronized but if one processor were to enter +certain low-power states, its TSC would stop, destroying the synchrony +and again causing obscure bugs. This reinforced decisions to avoid use +of TSC altogether. On the most recent generations of multi-core +machines, however, synchronization is provided across all processors +in all power states, even on multi-socket machines, and provide a +flag that indicates that TSC is synchronized and "invariant". Thus +TSC is once again useful for applications, and even newer operating +systems are using and depending upon TSC for critical timekeeping +tasks when running on these recent machines. + +We will refer to hardware that ensures TSC is both synchronized and +invariant as "TSC-safe" and any hardware on which TSC is not (or +may not remain) synchronized as "TSC-unsafe". + +As a result of TSC's sordid history, two classes of applications use +TSC: old applications designed for single processors, and the most recent +enterprise applications which require high-frequency high-precision +timestamping. + +We will refer to apps that might break if running on a TSC-unsafe +machine as "TSC-sensitive"; apps that don't use TSC, or do use +TSC but use it in a way that monotonicity and frequency invariance +are unimportant as "TSC-resilient". + +The emergence of virtualization once again complicates the usage of +TSC. When features such as save/restore or live migration are employed, +a guest OS and all its currently running applications may be invisibly +transported to an entirely different physical machine. While TSC +may be "safe" on one machine, it is essentially impossible to precisely +synchronize TSC across a data center or even a pool of machines. As +a result, when run in a virtualized environment, rare and obscure +"time going backwards" problems might once again occur for those +TSC-sensitive applications. Worse, if a guest OS moves from, for +example, a 3GHz +machine to a 1.5GHz machine, attempts by an OS/app to measure time +intervals with TSC may without notice be incorrect by a factor of two. + +The rdtsc (read timestamp counter) instruction is used to read the +TSC register. The rdtscp instruction is a variant of rdtsc on recent +processors. We refer to these together as the rdtsc family of instructions, +or just "rdtsc". Instructions in the rdtsc family are non-privileged, but +privileged software may set a cpuid bit to cause all rdtsc family +instructions to trap. This trap can be detected by Xen, which can +then transparently "emulate" the results of the rdtsc instruction and +return control to the code following the rdtsc instruction. + +To provide a "safe" TSC, i.e. to ensure both TSC monotonicity and a +fixed rate, Xen provides rdtsc emulation whenever necessary or when +explicitly specified by a per-VM configuration option. TSC emulation is +relatively slow -- roughly 15-20 times slower than the rdtsc instruction +when executed natively. However, except when an OS or application uses +the rdtsc instruction at a high frequency (e.g. more than about 10,000 times +per second per processor), this performance degradation is not noticeable +(i.e. <0.3%). And, TSC emulation is nearly always faster than +OS-provided alternatives (e.g. Linux's gettimeofday). For environments +where it is certain that all apps are TSC-resilient (e.g. +"TSC-safeness" is not necessary) and highest performance is a +requirement, TSC emulation may be entirely disabled (tsc_mode==2). + +The default mode (tsc_mode==0) checks TSC-safeness of the underlying +hardware on which the virtual machine is launched. If it is +TSC-safe, rdtsc will execute at hardware speed; if it is not, rdtsc +will be emulated. Once a virtual machine is save/restored or migrated, +however, there are two possibilities: TSC remains native IF the source +physical machine and target physical machine have the same TSC frequency +(or, for HVM/PVH guests, if TSC scaling support is available); else TSC +is emulated. Note that, though emulated, the "apparent" TSC frequency +will be the TSC frequency of the initial physical machine, even after +migration. + +Finally, tsc_mode==1 always enables TSC emulation, regardless of +the underlying physical hardware. The "apparent" TSC frequency will +be the TSC frequency of the initial physical machine, even after migration. +This mode is useful to measure any performance degradation that +might be encountered by a tsc_mode==0 domain after migration occurs, +or a tsc_mode==3 domain when it is running on TSC-unsafe hardware. + +Note that while Xen ensures that an emulated TSC is "safe" across migration, +it does not ensure that it continues to tick at the same rate during +the actual migration. As an oversimplified example, if TSC is ticking +once per second in a guest, and the guest is saved when the TSC is 1000, +then restored 30 seconds later, TSC is only guaranteed to be greater +than or equal to 1001, not precisely 1030. This has some OS implications +as will be seen in the next section. + +=head1 TSC INVARIANT BIT and NO_MIGRATE + +Related to TSC emulation, the "TSC Invariant" bit is architecturally defined +in a cpuid bit on the most recent x86 processors. If set, TSC invariance +ensures that the TSC is "safe", that is it will increment at a constant rate +regardless of power events, will be synchronized across all processors, and +was properly initialized to zero on all processors at boot-time +by system hardware/BIOS. As long as system software never writes to TSC, +TSC will be safe and continuously incremented at a fixed rate and thus +can be used as a system "clocksource". + +This bit is used by some OS's, and specifically by Linux starting with +version 2.6.30(?), to select TSC as a system clocksource. Once selected, +TSC remains the Linux system clocksource unless manually overridden. In +a virtualized environment, since it is not possible to synchronize TSC +across all the machines in a pool or data center, a migration may "break" +TSC as a usable clocksource; while time will not go backwards, it may +not track wallclock time well enough to avoid certain time-sensitive +consequences. As a result, Xen can only expose the TSC Invariant bit +to a guest OS if it is certain that the domain will never migrate. +As of Xen 4.0, the "no_migrate=1" VM configuration option may be specified +to disable migration. If no_migrate is selected and the VM is running +on a physical machine with "TSC Invariant", Linux 2.6.30+ will safely +use TSC as the system clocksource. But, attempts to migrate or, once +saved, restore this domain will fail. + +There is another cpuid-related complication: The x86 cpuid instruction is +non-privileged. HVM domains are configured to always trap this instruction +to Xen, where Xen can "filter" the result. In a PV OS, all cpuid instructions +have been replaced by a paravirtualized equivalent of the cpuid instruction +("pvcpuid") and also trap to Xen. But apps in a PV guest that use a +cpuid instruction execute it directly, without a trap to Xen. As a result, +an app may directly examine the physical TSC Invariant cpuid bit and make +decisions based on that bit. + +=head1 HARDWARE TSC SCALING + +Intel VMX TSC scaling and AMD SVM TSC ratio allow the guest TSC read +by guest rdtsc/p increasing in a different frequency than the host +TSC frequency. + +If a HVM container in default TSC mode (tsc_mode=0) is created on a host +that provides constant TSC, its guest TSC frequency will be the same as +the host. If it is later migrated to another host that provides constant +TSC and supports Intel VMX TSC scaling/AMD SVM TSC ratio, its guest TSC +frequency will be the same before and after migration. + +For above HVM container in default TSC mode (tsc_mode=0), if above +hosts support rdtscp, both guest rdtsc and rdtscp instructions will be +executed natively before and after migration. + +=head1 AUTHORS + +Dan Magenheimer diff --git a/docs/man/xen-vbd-interface.7.pandoc b/docs/man/xen-vbd-interface.7.pandoc new file mode 100644 index 0000000000..ba0d159dfa --- /dev/null +++ b/docs/man/xen-vbd-interface.7.pandoc @@ -0,0 +1,135 @@ +Xen guest interface +------------------- + +A Xen guest can be provided with block devices. These are always +provided as Xen VBDs; for HVM guests they may also be provided as +emulated IDE, AHCI or SCSI disks. + +The abstract interface involves specifying, for each block device: + + * Nominal disk type: Xen virtual disk (aka xvd*, the default); SCSI + (sd*); IDE or AHCI (hd*). + + For HVM guests, each whole-disk hd* and and sd* device is made + available _both_ via emulated IDE resp. SCSI controller, _and_ as a + Xen VBD. The HVM guest is entitled to assume that the IDE or SCSI + disks available via the emulated IDE controller target the same + underlying devices as the corresponding Xen VBD (ie, multipath). + In hd* case with hdtype=ahci, disk will be AHCI via emulated + ich9 disk controller. + + For PV guests every device is made available to the guest only as a + Xen VBD. For these domains the type is advisory, for use by the + guest's device naming scheme. + + The Xen interface does not specify what name a device should have + in the guest (nor what major/minor device number it should have in + the guest, if the guest has such a concept). + + * Disk number, which is a nonnegative integer, + conventionally starting at 0 for the first disk. + + * Partition number, which is a nonnegative integer where by + convention partition 0 indicates the "whole disk". + + Normally for any disk _either_ partition 0 should be supplied in + which case the guest is expected to treat it as they would a native + whole disk (for example by putting or expecting a partition table + or disk label on it); + + _Or_ only non-0 partitions should be supplied in which case the + guest should expect storage management to be done by the host and + treat each vbd as it would a partition or slice or LVM volume (for + example by putting or expecting a filesystem on it). + + Non-whole disk devices cannot be passed through to HVM guests via + the emulated IDE or SCSI controllers. + + +Configuration file syntax +------------------------- + +The config file syntaxes are, for example + + d0 d0p0 xvda Xen virtual disk 0 partition 0 (whole disk) + d1p2 xvdb2 Xen virtual disk 1 partition 2 + d536p37 xvdtq37 Xen virtual disk 536 partition 37 + sdb3 SCSI disk 1 partition 3 + hdc2 IDE disk 2 partition 2 + +The d*p* syntax is not supported by xm/xend. + +To cope with guests which predate this specification we preserve the +existing facility to specify the xenstore numerical value directly by +putting a single number (hex, decimal or octal) in the domain config +file instead of the disk identifier; this number is written directly +to xenstore (after conversion to the canonical decimal format). + + +Concrete encoding in the VBD interface (in xenstore) +---------------------------------------------------- + +The information above is encoded in the concrete interface as an +integer (in a canonical decimal format in xenstore), whose value +encodes the information above as follows: + + 1 << 28 | disk << 8 | partition xvd, disks or partitions 16 onwards + 202 << 8 | disk << 4 | partition xvd, disks and partitions up to 15 + 8 << 8 | disk << 4 | partition sd, disks and partitions up to 15 + 3 << 8 | disk << 6 | partition hd, disks 0..1, partitions 0..63 + 22 << 8 | (disk-2) << 6 | partition hd, disks 2..3, partitions 0..63 + 2 << 28 onwards reserved for future use + other values less than 1 << 28 deprecated / reserved + +The 1<<28 format handles disks up to (1<<20)-1 and partitions up to +255. It will be used only where the 202<<8 format does not have +enough bits. + +Guests MAY support any subset of the formats above except that if they +support 1<<28 they MUST also support 202<<8. PV-on-HVM drivers MUST +support at least one of 3<<8 or 8<<8; 3<<8 is recommended. + +Some software has used or understood Linux-specific encodings for SCSI +disks beyond disk 15 partition 15, and IDE disks beyond disk 3 +partition 63. These vbds, and the corresponding encoded integers, are +deprecated. + +Guests SHOULD ignore numbers that they do not understand or +recognise. They SHOULD check supplied numbers for validity. + + +Notes on Linux as a guest +------------------------- + +Very old Linux guests (PV and PV-on-HVM) are able to "steal" the +device numbers and names normally used by the IDE and SCSI +controllers, so that writing "hda1" in the config file results in +/dev/hda1 in the guest. These systems interpret the xenstore integer +as + major << 8 | minor +where major and minor are the Linux-specific device numbers. Some old +configurations may depend on deprecated high-numbered SCSI and IDE +disks. This does not work in recent versions of Linux. + +So for Linux PV guests, users are recommended to supply xvd* devices +only. Modern PV drivers will map these to identically-named devices +in the guest. + +For Linux HVM guests using PV-on-HVM drivers, users are recommended to +supply as few hd* devices as possible, and for the rest of the disks, +to use pure xvd* devices starting at xvde. Modern PV-on-HVM drivers +will map provided hd* devices to the corresponding /dev/xvd* (for +example, hda is presented also as /dev/xvda). + +Some Linux HVM guests with broken PV-on-HVM drivers do not cope +properly if both hda and hdc are supplied, nor with both hda and xvda, +because they directly map the bottom 8 bits of the xenstore integer +directly to the Linux guest's device number and throw away the rest; +they can crash due to minor number clashes. With these guests, the +workaround is not to supply problematic combinations of devices. + + +Other frontend and backend options +---------------------------------- + +See xen/include/public/io/blkif.h for the full list of options. diff --git a/docs/man/xen-vtpm.7.pod b/docs/man/xen-vtpm.7.pod new file mode 100644 index 0000000000..d033072584 --- /dev/null +++ b/docs/man/xen-vtpm.7.pod @@ -0,0 +1,383 @@ +=head1 NAME + +xen-vtpm - Xen virtual Trusted Platform Module (vTPM) subsystem + +=head1 RUBRIC + +Copyright (c) 2010-2012 United States Government, as represented by +the Secretary of Defense. All rights reserved. +November 12 2012 +Authors: Matthew Fioravante (JHUAPL), Daniel De Graaf (NSA) + +This document describes the virtual Trusted Platform Module (vTPM) subsystem +for Xen. The reader is assumed to have familiarity with building and installing +Xen, Linux, and a basic understanding of the TPM and vTPM concepts. + +=head1 INTRODUCTION + +The goal of this work is to provide a TPM functionality to a virtual guest +operating system (a DomU). This allows programs to interact with a TPM in a +virtual system the same way they interact with a TPM on the physical system. +Each guest gets its own unique, emulated, software TPM. However, each of the +vTPM's secrets (Keys, NVRAM, etc) are managed by a vTPM Manager domain, which +seals the secrets to the Physical TPM. If the process of creating each of these +domains (manager, vTPM, and guest) is trusted, the vTPM subsystem extends the +chain of trust rooted in the hardware TPM to virtual machines in Xen. Each +major component of vTPM is implemented as a separate domain, providing secure +separation guaranteed by the hypervisor. The vTPM domains are implemented in +mini-os to reduce memory and processor overhead. + +This mini-os vTPM subsystem was built on top of the previous vTPM work done by +IBM and Intel corporation. + +=head1 DESIGN OVERVIEW + +The architecture of vTPM is described below: + + +------------------+ + | Linux DomU | ... + | | ^ | + | v | | + | xen-tpmfront | + +------------------+ + | ^ + v | + +------------------+ + | mini-os/tpmback | + | | ^ | + | v | | + | vtpm-stubdom | ... + | | ^ | + | v | | + | mini-os/tpmfront | + +------------------+ + | ^ + v | + +------------------+ + | mini-os/tpmback | + | | ^ | + | v | | + | vtpmmgr-stubdom | + | | ^ | + | v | | + | mini-os/tpm_tis | + +------------------+ + | ^ + v | + +------------------+ + | Hardware TPM | + +------------------+ + +=over 4 + +=item Linux DomU + +The Linux based guest that wants to use a vTPM. There many be +more than one of these. + +=item xen-tpmfront.ko + +Linux kernel virtual TPM frontend driver. This driver +provides vTPM access to a para-virtualized Linux based DomU. + +=item mini-os/tpmback + +Mini-os TPM backend driver. The Linux frontend driver +connects to this backend driver to facilitate +communications between the Linux DomU and its vTPM. This +driver is also used by vtpmmgr-stubdom to communicate with +vtpm-stubdom. + +=item vtpm-stubdom + +A mini-os stub domain that implements a vTPM. There is a +one to one mapping between running vtpm-stubdom instances and +logical vtpms on the system. The vTPM Platform Configuration +Registers (PCRs) are all initialized to zero. + +=item mini-os/tpmfront + +Mini-os TPM frontend driver. The vTPM mini-os domain +vtpm-stubdom uses this driver to communicate with +vtpmmgr-stubdom. This driver could also be used separately to +implement a mini-os domain that wishes to use a vTPM of +its own. + +=item vtpmmgr-stubdom + +A mini-os domain that implements the vTPM manager. +There is only one vTPM manager and it should be running during +the entire lifetime of the machine. This domain regulates +access to the physical TPM on the system and secures the +persistent state of each vTPM. + +=item mini-os/tpm_tis + +Mini-os TPM version 1.2 TPM Interface Specification (TIS) +driver. This driver used by vtpmmgr-stubdom to talk directly to +the hardware TPM. Communication is facilitated by mapping +hardware memory pages into vtpmmgr-stubdom. + +=item Hardware TPM + +The physical TPM that is soldered onto the motherboard. + +=back + +=head1 INSTALLATION + +=head2 Prerequisites: + +You must have an x86 machine with a TPM on the motherboard. The only extra +software requirement for compiling vTPM is cmake. You must use libxl to manage +domains with vTPMs; 'xm' is deprecated and does not support vTPMs. + +=head2 Compiling the Xen tree: + +Compile and install the Xen tree as usual; be sure that the vTPM domains are +enabled when you run configure. + +=head2 Compiling the LINUX dom0 kernel: + +Because the TPM manager uses direct access to the physical TPM, it may interfere +with access to the TPM by dom0. The simplest solution for this is to prevent +dom0 from accessing the physical TPM by compiling the kernel without a driver or +blacklisting the module. If dom0 needs a TPM but does not need to use it during +the boot process (i.e. it is not using IMA), a virtual TPM can be attached to +dom0 after the system is booted. + +Access to the physical TPM may be required in order to manage the NVRAM or to +perform other advanced operations where the vTPM is insufficient. In order to +prevent interference, the TPM Manager and dom0 should use different values for +the TPM's locality; since Linux always uses locality 0, using locality 2 for the +TPM Manager is recommended. If both Linux and the TPM Manager attempt to access +the TPM at the same time, the TPM device will return a busy status; some +applications will consider this a fatal error instead of retrying the command at +a later time. If a vTPM gets an error when loading its key, it will currently +generate a fresh vTPM image (with a new EK, SRK, and blank NVRAM). + + +=head2 Compiling the LINUX domU kernel: + +The domU kernel used by domains with vtpms must include the xen-tpmfront.ko +driver. It can be built directly into the kernel or as a module; however, some +features such as IMA require the TPM to be built in to the kernel. + + CONFIG_TCG_TPM=y + CONFIG_TCG_XEN=y + +=head1 VTPM MANAGER SETUP + +=head2 Manager disk image setup: + +The vTPM Manager requires a disk image to store its encrypted data. The image +does not require a filesystem and can live anywhere on the host disk. The image +is not large; the Xen 4.5 vtpmmgr is limited to using the first 2MB of the image +but can support more than 20,000 vTPMs. + +=head2 Manager config file: + +The vTPM Manager domain (vtpmmgr-stubdom) must be started like any other Xen +virtual machine and requires a config file. The manager requires a disk image +for storage and permission to access the hardware memory pages for the TPM. The +disk must be presented as "hda", and the TPM memory pages are passed using the +iomem configuration parameter. The TPM TIS uses 5 pages of IO memory (one per +locality) that start at physical address 0xfed40000. By default, the TPM manager +uses locality 0 (so only the page at 0xfed40 is needed); this can be changed on +the domain's command line. For full functionality in deep quotes, using +locality 2 is required to manipulate PCR 20-22. + +=head2 Starting and stopping the manager: + +The vTPM manager should be started at boot; you may wish to create an init +script to do this. If a domain builder is used, the TPM Manager should be +started by the domain builder to minimize the trusted computing base for the +vTPM manager's secrets. + +Once initialization is complete you should see the following: + + INFO[VTPM]: Waiting for commands from vTPM's: + +The TPM Manager does not respond to shutdown requests; use the destroy command +to shut it down. + +=head1 VTPM AND LINUX PVM SETUP + +=head2 vTPM disk image setup: + +The vTPM requires a disk image to store its persistent data (RSA keys, NVRAM, +etc). The image does not require a filesystem. The image does not need to be +large; 2 Mb should be sufficient. + +=head2 vTPM config file: + +The vTPM domain requires a configuration file like any other domain. The vTPM +requires a disk image for storage and a TPM frontend driver to communicate with +the manager. You are required to generate a uuid for this vtpm, which is +specified on the C line that describes its connection to the vTPM Manager. +The uuidgen application may be used to generate a uuid, or one from the output +of the C command may be used to create a vTPM +belonging to a specific group. + +If you wish to clear the vTPM data you can either recreate the disk image or +change the uuid. + +=head2 Linux Guest config file: + +The Linux guest config file needs to be modified to include the Linux tpmfront +driver. Add the following line: + + vtpm=["backend=domu-vtpm"] + +Currently only Linux guests are supported (PV or HVM with PV drivers). + +While attaching a vTPM after a guest is booted (using xl vtpm-attach) is +supported, the attached vTPM will not have a record of the boot of the attached +guest. Furthermore, if the vTPM has been freshly created, a malicious guest +could then extend any values into PCRs, potentially forging its boot +configuration. Attaching a vTPM to a running domain should only be used for +trusted domains or when measurements have already been sent to the vTPM from +another source. + +=head2 Using the vTPM in the guest: + +If xen-tpmfront was compiled as a module, it must be loaded it in the guest. + + # modprobe xen-tpmfront + +After the Linux domain boots and the xen-tpmfront driver is loaded, you should +see the following on the vtpm console: + + Info: VTPM attached to Frontend X/Y + +You can quickly test the vTPM by using the sysfs interface: + + # cat /sys/devices/vtpm-0/pubek + # cat /sys/devices/vtpm-0/pcrs + +If you have trousers and tpm_tools installed on the guest, the tpm_version +command should return the following: + +The version command should return the following: + + TPM 1.2 Version Info: + Chip Version: 1.2.0.7 + Spec Level: 2 + Errata Revision: 1 + TPM Vendor ID: ETHZ + TPM Version: 01010000 + Manufacturer Info: 4554485a + +You should also see the command being sent to the vtpm console as well as the +vtpm saving its state. You should see the vtpm key being encrypted and stored on +the vtpmmgr console. + +You may wish to write a script to start your vtpm and guest together and to +destroy the vtpm when the guest shuts down. + +=head1 INTEGRATION WITH PV-GRUB + +The vTPM currently starts up with all PCRs set to their default values (all +zeros for the lower 16). This means that any decisions about the +trustworthiness of the created domain must be made based on the environment that +created the vTPM and the domU; for example, a system that only constructs images +using a trusted configuration and guest kernel be able to provide guarantees +about the guests and any measurements done that kernel (such as the IMA TCB +log). Guests wishing to use a custom kernel in such a secure environment are +often started using the pv-grub bootloader as the kernel, which then can load +the untrusted kernel without needing to parse an untrusted filesystem and kernel +in dom0. If the pv-grub stub domain succeeds in connecting to a vTPM, it will +extend the hash of the kernel that it boots into PCR #4, and will extend the +command line and initrd into PCR #5 before booting so that a domU booted in this +way can attest to its early boot state. + +=head1 MORE INFORMATION + +See for more details about how the manager domain works, how to use +it, and its command line parameters. + +=head1 VTPM DOMAIN OPERATION + +The vtpm-stubdom is a mini-OS domain that emulates a TPM for the guest OS to +use. It is a small wrapper around the Berlios TPM emulator version 0.7.4. +Commands are passed from the linux guest via the mini-os TPM backend driver. +vTPM data is encrypted and stored via a disk image provided to the virtual +machine. The key used to encrypt the data along with a hash of the vTPM's data +is sent to the vTPM manager for secure storage and later retrieval. The vTPM +domain communicates with the manager using a mini-os tpm front/back device pair. + +=head1 VTPM DOMAIN COMMAND LINE ARGUMENTS + +Command line arguments are passed to the domain via the 'extra' parameter in the +VM config file. Each parameter is separated by white space. For example: + + extra="foo=bar baz" + +=head2 List of Arguments: + +=over 4 + +=item B= + +Controls the amount of logging printed to the console. +The possible values for are: + +=over 4 + +=item * error + +=item * info (default) + +=item * debug + +=back + +=item B + +Start the Berlios emulator in "clear" mode. (default) + +=item B + +Start the Berlios emulator in "save" mode. + +=item B + +Start the Berlios emulator in "deactivated" mode. +See the Berlios TPM emulator documentation for details +about the startup mode. For all normal use, always use clear +which is the default. You should not need to specify any of these. + +=item B=<1|0> + +Enable to disable the TPM maintenance commands. +These commands are used by tpm manufacturers and thus +open a security hole. They are disabled by default. + +=item B= + +Initialize the virtual Platform Configuration Registers +(PCRs) with PCR values from the hardware TPM. Each pcr specified by + will be initialized with the value of that same PCR in TPM +once at startup. By default all PCRs are zero initialized. +Possible values of are: + +=over + +=item * all: copy all pcrs + +=item * none: copy no pcrs (default) + +=item * : copy pcr n + +=item * : copy pcrs x to y (inclusive) + +=back + +These can also be combined by comma separation, for example: +C will copy pcrs 5, 12, 13, 14, 15, and 16. + +=back + +=head1 REFERENCES + +Berlios TPM Emulator: L diff --git a/docs/man/xen-vtpmmgr.7.pod b/docs/man/xen-vtpmmgr.7.pod new file mode 100644 index 0000000000..af825a7ffe --- /dev/null +++ b/docs/man/xen-vtpmmgr.7.pod @@ -0,0 +1,383 @@ +=head1 NAME + +xen-vtpmgr - Xen virtual TPM stubdomain + +=head1 Authors + +=over 4 + +=item Daniel De Graaf + +=item Quan Xu + +=back + +This document describes the operation and command line interface of +vtpmmgr-stubdom. See L for details on the vTPM subsystem as a +whole. + +=head1 Overview + +The TPM Manager has three primary functions: + +=over 4 + +=item 1. Securely store the encryption keys for vTPMs + +=item 2. Provide a single controlled path of access to the physical TPM + +=item 3. Provide evidence (via TPM Quotes) of the current configuration + +=back + +When combined with a platform that provides a trusted method for creating +domains, the TPM Manager provides assurance that the private keys in a vTPM are +only available in specific trusted configurations. + +The manager accepts commands from the vtpm-stubdom domains via the mini-os TPM +backend driver. The vTPM manager communicates directly with hardware TPM using +the mini-os tpm_tis driver. + +=head1 Boot Configurations and TPM Groups + +The TPM Manager's data is secured by using the physical TPM's seal operation, +which allows data to be bound to specific PCRs. These PCRs are populated in the +physical TPM during the boot process, either by the firmware/BIOS or by a +dynamic launch environment such as TBOOT. In order to provide assurance of the +system's security, the PCRs used to seal the TPM manager's data must contain +measurements for domains used to bootstrap the TPM Manager and vTPMs. + +Because these measurements are based on hashes, they will change any time that +any component of the system is upgraded. Since it is not possible to construct a +list of all possible future good measurements, the job of approving +configurations is delegated to a third party, referred to here as the system +approval agent (SAA). The SAA is identified by its public (RSA) signature key, +which is used to sign lists of valid configurations. A single TPM manager can +support multiple SAAs via the use of vTPM groups. Each group is associated with +a single SAA; this allows the creation of a multi-tenant environment where +tenants may not all choose to trust the same SAA. + +Each vTPM is bound to a vTPM group at the time of its creation. Each vTPM group +has its own AIK in the physical TPM for quotes of the hardware TPM state; when +used with a conforming Privacy CA, this allows each group on the system to form +the basis of a distinct identity. + +=head1 Initial Provisioning + +When the TPM Manager first boots up, it will create a stub vTPM group along with +entries for any vTPMs that communicate with it. This stub group must be +provisioned with an SAA and a boot configuration in order to survive a reboot. + +When a vTPM is connected to the TPM Manager using a UUID that is not recognized, +a slot will be created in group 0 for it. In the future, this auto-creation may +be restricted to specific UUIDs (such as the all-zero UUID) to enforce the use +of the TPM manager as the generator of the UUID. The first vTPM to be connected +is given administrative privileges for the TPM Manager, and should be attached +to dom0 or a control domain in order to send provisioning commands. + +Provisioning a vTPM group for the system requires the public key of the SAA and +privacy CA data used to certify the AIK (see the TPM spec for details). Once the +group is created, a signed list of boot measurements can be installed. The +initial group controls the ability to boot the system as a whole, and cannot be +deleted once provisioned. + +=head1 Command Line Arguments + +Command line arguments are passed to the domain via the 'extra' parameter in the +VM config file. Each parameter is separated by white space. For example: + + extra="foo=bar baz" + +Valid arguments: + +=over 4 + +=item owner_auth= + +=item srk_auth= + +Set the owner and SRK authdata for the TPM. If not specified, the +default is 160 zero bits (the well-known auth value). Valid values of + are: + +=over 4 + +=item well-known + +Use the well known auth (default) + +=item hash: + +Use the given 40-character ASCII hex string + +=item text: + +Use sha1 hash of . + +=back + +=item tpmdriver= + +Choose the driver used for communication with the hardware TPM. Values +other than tpm_tis should only be used for testing. + +The possible values of are: + +=over 4 + +=item tpm_tis + +Direct communication with a hardware TPM 1.2. The +domain must have access to TPM IO memory. (default) + +=item tpmfront + +Use the Xen tpmfront interface to talk to another +domain which provides access to the TPM. + +=back + +=back + +The following options only apply to the tpm_tis driver: + +=over 4 + +=item tpmiomem= + +The base address of the hardware memory pages of the TPM. +The default is 0xfed40000, as defined by the TCG's PC Client spec. + +=item tpmirq= + +The irq of the hardware TPM if using interrupts. A value of +"probe" can be set to probe for the irq. A value of 0 disables +interrupts and uses polling (default 0). + +=item tpmlocality= + +Attempt to use locality of the hardware TPM. +For full functionality of the TPM Manager, this should be set to "2". + +=back + +=head1 Platform Security Assumptions + +While the TPM Manager has the ability to check the hash of the vTPM requesting a +key, there is currently no trusted method to inform the TPM Manager of the hash +of each new domain. Because of this, the TPM Manager trusts the UUID key in +Xenstore to identify a vTPM in a trusted manner. The XSM policy may be used to +strengthen this assumption if the creation of vTPM-labeled domains is more +constrained (for example, only permitted to a domain builder service): the only +grants mapped by the TPM Manager should belong to vTPM domains, so restricting +the ability to map other domain's granted pages will prevent other domains from +directly requesting keys from the TPM Manager. The TPM Manager uses the hash of +the XSM label of the attached vTPM as the kernel hash, so vTPMs with distinct +labels may be further partitioned using vTPM groups. + +A domain with direct access to the hardware TPM will be able to decrypt the TPM +Manager's disk image if the haredware TPM's PCR values are in a permitted +configuration. To protect the TPM Manager's data, the list of permitted +configurations should be chosen to include PCRs that measure the hypervisor, +domain 0, the TPM Manager, and other critical configuration such as the XSM +policy. If the TPM Manager is configured to use locality 2 as recommended, it +is safe to permit the hardware domain to access locality 0 (the default in +Linux), although concurrent use of the TPM should be avoided as it can result in +unexpected busy errors from the TPM driver. The ability to access locality 2 of +the TPM should be enforced using IO memory labeling in the XSM policy; the +physical address 0xFED42xxx is always locality 2 for TPMs using the TIS driver. + +=head1 Appendix: unsecured migration process for vtpmmgr domain upgrade + +There is no direct upgrade supported from previous versions of the vtpmmgr +domain due to changes in the on-disk format and the method used to seal data. +If a vTPM domain supports migration, this feature should be used to migrate the +vTPM's data; however, the vTPM packaged with Xen does not yet support migration. + +If adding migration support to the vTPM is not desired, a simpler migration +domain usable only for local migration can be constructed. The migration process +would look like the following: + +=over 4 + +=item 1. Start the old vtpmmgr + +=item 2. Start the vTPM migration domain + +=item 3. Attach the vTPM migration domain's vtpm/0 device to the old vtpmmgr + +=item 4. Migration domain executes vtpmmgr_LoadHashKey on vtpm/0 + +=item 5. Start the new vtpmmgr, possibly shutting down the old one first + +=item 6. Attach the vTPM migration domain's vtpm/1 device to the new vtpmmgr + +=item 7. Migration domain executes vtpmmgr_SaveHashKey on vtpm/1 + +=back + +This requires the migration domain to be added to the list of valid vTPM kernel +hashes. In the current version of the vtpmmgr domain, this is the hash of the +XSM label, not the kernel. + +=head1 Appendix B: vtpmmgr on TPM 2.0 + +=head2 Manager disk image setup: + +The vTPM Manager requires a disk image to store its encrypted data. The image +does not require a filesystem and can live anywhere on the host disk. The image +is not large; the Xen 4.5 vtpmmgr is limited to using the first 2MB of the image +but can support more than 20,000 vTPMs. + + dd if=/dev/zero of=/home/vtpm2/vmgr bs=16M count=1 + +=head2 Manager config file: + +The vTPM Manager domain (vtpmmgr-stubdom) must be started like any other Xen +virtual machine and requires a config file. The manager requires a disk image +for storage and permission to access the hardware memory pages for the TPM. The +disk must be presented as "hda", and the TPM memory pages are passed using the +iomem configuration parameter. The TPM TIS uses 5 pages of IO memory (one per +locality) that start at physical address 0xfed40000. By default, the TPM manager +uses locality 0 (so only the page at 0xfed40 is needed). + +Add: + + extra="tpm2=1" + +extra option to launch vtpmmgr-stubdom domain on TPM 2.0, and ignore it on TPM +1.x. for example: + + kernel="/usr/lib/xen/boot/vtpmmgr-stubdom.gz" + memory=128 + disk=["file:/home/vtpm2/vmgr,hda,w"] + name="vtpmmgr" + iomem=["fed40,5"] + extra="tpm2=1" + + +=head2 Key Hierarchy + + +------------------+ + | vTPM's secrets | ... + +------------------+ + | ^ + | |(Bind / Unbind) +- - - - - -v |- - - - - - - - TPM 2.0 + +------------------+ + | SK + + +------------------+ + | ^ + v | + +------------------+ + | SRK | + +------------------+ + | ^ + v | + +------------------+ + | TPM 2.0 Storage | + | Primary Seed | + +------------------+ + +Now the secrets for the vTPMs are only being bound to the presence of thephysical +TPM 2.0. Since using PCRs to seal the data can be an important security feature +that users of the vtpmmgr rely on. I will replace TPM2_Bind/TPM2_Unbind with +TPM2_Seal/TPM2_Unseal to provide as much security as it did for TPM 1.2 in later +series of patch. + +=head2 Design Overview + +The architecture of vTPM subsystem on TPM 2.0 is described below: + + +------------------+ + | Linux DomU | ... + | | ^ | + | v | | + | xen-tpmfront | + +------------------+ + | ^ + v | + +------------------+ + | mini-os/tpmback | + | | ^ | + | v | | + | vtpm-stubdom | ... + | | ^ | + | v | | + | mini-os/tpmfront | + +------------------+ + | ^ + v | + +------------------+ + | mini-os/tpmback | + | | ^ | + | v | | + | vtpmmgr-stubdom | + | | ^ | + | v | | + | mini-os/tpm2_tis | + +------------------+ + | ^ + v | + +------------------+ + | Hardware TPM 2.0 | + +------------------+ + +=over 4 + +=item Linux DomU + +The Linux based guest that wants to use a vTPM. There many be +more than one of these. + +=item xen-tpmfront.ko + +Linux kernel virtual TPM frontend driver. This driver +provides vTPM access to a para-virtualized Linux based DomU. + +=item mini-os/tpmback + +Mini-os TPM backend driver. The Linux frontend driver +connects to this backend driver to facilitate +communications between the Linux DomU and its vTPM. This +driver is also used by vtpmmgr-stubdom to communicate with +vtpm-stubdom. + +=item vtpm-stubdom + +A mini-os stub domain that implements a vTPM. There is a +one to one mapping between running vtpm-stubdom instances and +logical vtpms on the system. The vTPM Platform Configuration +Registers (PCRs) are all initialized to zero. + +=item mini-os/tpmfront + +Mini-os TPM frontend driver. The vTPM mini-os domain +vtpm-stubdom uses this driver to communicate with +vtpmmgr-stubdom. This driver could also be used separately to +implement a mini-os domain that wishes to use a vTPM of +its own. + +=item vtpmmgr-stubdom + +A mini-os domain that implements the vTPM manager. +There is only one vTPM manager and it should be running during +the entire lifetime of the machine. This domain regulates +access to the physical TPM on the system and secures the +persistent state of each vTPM. + +=item mini-os/tpm2_tis + +Mini-os TPM version 2.0 TPM Interface Specification (TIS) +driver. This driver used by vtpmmgr-stubdom to talk directly +to the hardware TPM 2.0. Communication is facilitated by mapping +hardware memory pages into vtpmmgr-stubdom. + +=item Hardware TPM 2.0 + +The physical TPM 2.0 that is soldered onto the motherboard. + +=back + +Noted: + functionality for a virtual guest operating system (a DomU) is still TPM 1.2. diff --git a/docs/man/xenhypfs.1.pod b/docs/man/xenhypfs.1.pod new file mode 100644 index 0000000000..d5553b1150 --- /dev/null +++ b/docs/man/xenhypfs.1.pod @@ -0,0 +1,60 @@ +=head1 NAME + +xenhypfs - Xen tool to access Xen hypervisor file system + +=head1 SYNOPSIS + +B I [I] [I] + +=head1 DESCRIPTION + +The B program is used to access the Xen hypervisor file system. +It can be used to show the available entries, to show their contents and +(if allowed) to modify their contents. + +=head1 SUBCOMMANDS + +=over 4 + +=item B I + +List the available entries below I. + +=item B [I<-b>] I + +Show the contents of the entry specified by I. Non-printable characters +other than white space characters (like tab, new line) will be shown as +B<\xnn> (B being a two digit hex number) unless the option B<-b> is +specified. + +=item B I I + +Set the contents of the entry specified by I to I. + +=item B + +Show all the entries of the file system as a tree. + +=back + +=head1 RETURN CODES + +=over 4 + +=item B<0> + +Success + +=item B<1> + +Invalid usage (e.g. unknown subcommand, unknown option, missing parameter). + +=item B<2> + +Entry not found while traversing the tree. + +=item B<3> + +Access right violation. + +=back diff --git a/docs/man/xenstore-chmod.1.pod b/docs/man/xenstore-chmod.1.pod new file mode 100644 index 0000000000..d76f34723d --- /dev/null +++ b/docs/man/xenstore-chmod.1.pod @@ -0,0 +1,62 @@ +=head1 NAME + +xenstore-chmod - set the permissions of a Xenstore key + +=head1 SYNOPSIS + +B [I