[HVM][VMX] Enable VMX TPR shadow feature.

x64 Windows uses CR8 to access TPR very frequently. This patch enables
TPR shadow and allows mov-from/to-CR8 to access it directly; tests
indicates it can boost greatly the performance of x64 Windows 2003.

Signed-off-by: Eddie Dong <eddie.dong@intel.com>
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>

[HVM] Fix Qemu-dm serial issues:
 1. Retry transmit via a polling timer if a byte cannot be written
    immediately to its destination.
 2. Turn off output processing of raw serial lines.

Signed-off-by: Xiaowei Yang <xiaowei.yang@intel.com>
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Keir Fraser <keir@xensource.com>

[XEN] Add implicit "\n" back into MEM_LOG(). Removed by mistake.
Signed-off-by: Keir Fraser <keir@xensource.com>

[XEN] Some cleanups to the log-level stuff. Largely this
is a rename and slight interface change to DPRINTK (now
replaced by dprintk() and gdprintk()). Also shuffle some
log-level definitions around and tweak the semantics of
the upper threshold.
Signed-off-by: Keir Fraser <keir@xensource.com>

[QEMU] Add a TIS device model compliant to the 1.2 TPM specification.
It implements all registers necessary to make the Linux TIS driver
work (tpm_tis.c). All of the basic registers supported by this type of
device are implemented. Also the locality selection has been
implemented, but has not been tested. The legacy registers as
described in the specification are not supported.

Current caveat: The device has so far not yet been integrated with the
virtual TPM available in the repository. It will require changes to
the virtual TPM spawned by the vTPM manager to offer an additional message
interface. The TIS interface itself then needs to have an additional
transport implemented. (see vTPMTransmit array).

The relevant specification for the device model can be found here:
https://www.trustedcomputinggroup.org/groups/pc_client/TCG_PCClientTPMSpecification_1-20_1-00_FINAL.pdf

Signed-off-by: Stefan Berger <stefanb@us.ibm.com>

[QEMU] Helper functions to interface with the xenstore and read device information from it.

 - detect what types of devices a domain has or whether a domain has a
   device of a certain type
 - read the content of a variable related to a device, i.e.,
   hotplug-status
 - subscribe to changes of the hotplug status of a device for not
   having to poll the status

Signed-off-by: Stefan Berger <stefanb@us.ibm.com>

[XEN] Logging parameters for ia64 code.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>

[XEN] Logging parameters for powerpc code.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>

[XEN] Logging parameters for x86 code.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>

[XEN] Logging parameters for common code.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>

[XEN] Implement log levels. It adds the thresholds and code to printk
to implement the thresholds.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>

[XEN] Implement rate-limited logging.

Taken from Andi Kleen's rate limit in the Linux kernel.

This keeps large amounts of prints in the HV down.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

[XEND] Do not delete VNC password from configuration.
Fixes reboot of HVM guest when VNC authentication is in use.
Signed-off-by: Keir Fraser <keir@xensource.com>

[XEN] perf counters: Fix NULL-pointer check. Should happen later.
Signed-of-by: Kouya Shimura <kouya@jp.fujitsu.com>

[HVM] Ensure that, if AP is blocked, it is woken by interrupt delivered by IOAPIC.

This fixes 64-bit SMP Windows 2k3 boot.

Signed-off-by: Xiaowei Yang <xiaowei.yang@intel.com>
Signed-off-by: Xin Li <xin.b.li@intel.com>

[HVM] Fix SMP timer issues:
 * Sync AP TSCs with BP at startup
 * Only halt BP TSC when descheduled
 * Correctly handle IPIs on timer vector
Signed-off-by: Xiaowei Yang <xiaowei.yang@intel.com>

[QEMU] ne2000: Stop memory access beyond buffer

As a program that runs in dom0 which serves users from guests,
the qemu drivers need to be vigilant to the input that comes
from the guests since they may be malicious.

As it is there are multiple ways to get ne2000 to read/write
memory beyond the 48K buffer that it has allocated for each
adapter.

This patch checks the addresses and prevents this from occuring.

The boundary is checked each time since it's changed for every
packet received while the other parameters are only changed
(by the guest) during setup.

Signed-off: Herbert Xu <herbert@gondor.apana.org.au>

Improve I/O performance when competing with CPU intensive workloads.
Allow non CPU consuming wake-to-run latency sensitive VCPUs to
preempt CPU consuming ones.

Signed-off-by: Emmanuel Ackaouy <ack@xensource.com>

[TOOLS] Uncompress and allocate memory for gzipped kernel and initrd images on
the fly. We cannot rely on the length contained in the gzip trailer to determine
the length of the decompressed data because images have been observed which have
trailing junk.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

[HVM] Fix qemu's test for whether physcal addresses are RAM.
HVM guests have a memory hole below 4GB, so can't just check whether
addresses are < the amount of RAM allocated.
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>

[NET] back: Advertise that we do not support rx-flip path any more.
This will now be used only by older guests who do not understand
the feature-rx-{copy,flip} feature flags.
Signed-off-by: Keir Fraser <keir@xensource.com>

Merge with xen-isa64-unstable.hg

Fix ramdisk Makefile so that downloading from xm-test.xensource.com actually
works.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

[LIBXC][IA64] fix build warning

With warnings becoming errors, this fixes the libxc build on ia64

Signed-off-by: Alex Williamson <alex.williamson@hp.com>

[IA64] NUMA support

Based on patch from Tristan Gingold

Signed-off-by: Alex Williamson <alex.williamson@hp.com>

merge with xen-unstable.hg

[IA64][HVM][QEMU] Add buffer IO mechanism for IA64/VTi domain.

Signed-off-by:Zhang xiantao <xiantao.zhang@intel.com>

[IA64][HVM] Add buffer IO mechanism for Xen/VTi domain. Current
implementation can accelerate Windows guest's dense IO operations
at boot time.

Signed-off-by: Zhang xiantao <xiantao.zhang@intel.com>

[LIBXC] Add -Wmissing-prototypes to CFLAGS, fix warnings resulting from that.

Signed-off-by: Gerd Hoffmann <kraxel@suse.de>

[XEN] Clean up NUMA stuff and disable by default ('numa=on' enables it).
Signed-off-by: Keir Fraser <keir@xensource.com>

Print the time to xend-debug.log, when starting or restarting Xend.

Signed-off-by: Ewan Mellor <ewan@xensource.com>

PV-to-HVM: Add a compatibility define for the end_that_request_last
which changed prototype in 2.6.16.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-on-HVM: Include compatibility kzalloc implementation for kernels
before 2.6.14.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-to-HVM: Impletement compatibility version of
schedule_timeout_interruptible for kernels before 2.6.14

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-on-HVM: Implement and export a compatibility version of do_exit().
Kernels prior to 2.6.12 did not export do_exit().

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-on-HVM: Implement compatibilty version of wait_for_completion_timeout
for kernels before 2.6.11

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

PV-on-HVM: Include compatability vmalloc_to_pfn for kernels before 2.6.10

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-on-HVM: Kernels prior to 2.6.8 did not export strcspn to modules
therefore implement our own and export it.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-on-HVM: Define system_state as 1 (SYSTEM_RUNNING) on kernels prior
to 2.6.7. These kernels did not export the system_state variable to
modules.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

PV-to-HVM: Implement compatibility nonseekable_open as a nop on
kernels before 2.6.9

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

PV-to-HVM: Add compatibility definitions of various #defines when they
are not present in the kernel we are building against.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-on-HVM: Include compatability headers for asm/pgtable-no{pmd,pud}.h
for kernels before 2.6.11.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-on-HVM: Add a compatibility linux/mutex.h for kernels before
2.6.16.  This implements the new mutex type in terms of the old
semaphore type.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-on-HVM: Add a compatibility linux/io.h for kernels before 2.6.16

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

PV-on-HVM: Add infrastructure for a compatibility shim in order to
support PV-on-HVM drivers for older kernel releases.

The compatability code is included in the xen-platform-pci module
since this module underpins all the others.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

[LINUX] PV-on-HVM: The elevator_init prototype changed in 2.6.10

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

[LINUX] PV-on-HVM: Implement HDIO_GETGEO ioctl on kernels before
2.6.16.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

[LINUX] PV-on-HVM: The probe, remove and shutdown methods were added
to struct bus_type in 2.6.16. For older kernels use the methods on the
struct device_driver.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

[LINUX] PV-on-HVM: Only initialize the owner field of struct
device_driver on kernels from 2.6.10 onward. The field was not
available until then.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

[LINUX] Exclude support for /proc/xen/xsd_kva when building a
non-privileged guest.

This is useful for PV-on-HVM because it removes code which would
otherwise require extra code in the compatability shim.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

[LINUX] PV-on-HVM: Remove the attr parameter from device attribute
show methods on kernels prior to 2.6.13. The parameter was not present
before that.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

[LINUX] Move xenbus backend probing into a separate source file and
only build it when CONFIG_XEN_BACKEND is set.

This removes unused code from frontend only configurations and also
makes PV-on-HVM drivers on older kernels simpler by removing code
which would otherwise require extra code in the compatability shim.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

PV-on-HVM: Include a Makefile in each subdirectory to maintain
compatability with kernels from before Kbuild files were introduced.

This follows best practice as described in
Documentation/kbuild/modules.txt

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>

[LINUX] PV-on-HVM: Directly include headers which are used in various
files rather than relying on them being included indirectly.

This is required because these headers are not pulled in indirectly on
older kernels.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

[XEN] Make memory hypercalls NUMA-aware.

This patch modifies memory ops to use the NUMA-aware page allocator
functions.  We use the target domain's VCPU0 placement to determine
which node's memory to use.  We expect the system administrator to
utilize the exposed NUMA topology information to help craft guest
config files that are NUMA-friendly (use only processors and memory values
that will fit within a given node).

Signed-off-by: Ryan Harper <ryanh@us.ibm.com>

[XEN] NUMA-ify Xen heap and page allocator

This patch adds a per-node bucket to the heap structure in Xen.
During heap initialization the patch determines which bucket to place
the memory. We reserve guard pages between node boundaries in the case
that said boundary isn't already guarded by the MAX_ORDER boundary to
prevent the buddy allocator from merging pages between nodes.

Signed-off-by: Ryan Harper <ryanh@us.ibm.com>

[XEN] Add basic NUMA/SRAT support to Xen from Linux 2.6.16.29.
Signed-off-by: Ryan Harper <ryanh@us.ibm.com>

merge

[HVM] Move ACPI timer to HV, which is the last platform timer in Qemu.

We found Vista polls ACPI timer very frequently (about 15 times
averagely) when handling timer (RTC @ 64HZ) interrupt routine. Though
the exact reason is known, it should be related to system time
adjustment. When it's in Qemu, the overhead is big. After moving,
Vista's idle overhead decreases dramatically from ~10% to 0.9%.=20

Another benefit is that Vista can only pass Performance rating with
this patch. The root cause is that ACPI timer in Qemu isn't
synchronous with other platform timer in HV, which results in Vista
complains "can't measure TSC frequency".

This patch changes vpit.h to vpt.h, for it not only has pit structure
in it, but other platform timer's structure. Another change is moving
ACPI timer and related address from acpi.h to ioreq.h, which can be shared
by HV and ACPI firmware.

Signed-off-by: Xiaowei Yang <xiaowei.yang@intel.com>

[XEND] Be more generous with the default shadow allocation.
Allow enough shadow memory to avoid thrashing the shadow pages,
rather than just enough for safety.
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>

[HVM] Avoid buffer overrun in qemu-dm
The array offset in set_bits_in_row here comes from an otherwise un-checked
VNC client request.
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>

[BLOCK] blkback: Fix potential grant entry leaks on error

As it stands grant entries for the actual data are mapped in bulk.
If one of the earlier entries fail to be mapped, it can cause all
subsequent entries to be leaked if they were successfully mapped.

This patch changes it so that we will continue to reap grant entries
even when an error is detected.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

[BLKTAP] Simplify linked-list insertion/deletion.
This should also avoid (bogus) compiler warnings, as reported
on IA64.
Signed-off-by: Keir Fraser <keir@xensource.com>

[XEND] Open xend-debug.log in append mode.
Signed-off-by: John Levon <john.levon@sun.com>

[TOOLS][XENTOP] Update usage and manpage to include vbd options.

Also a couple of whitespace fixes.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

merge with xen-unstable.hg

[IA64] xenctx shows more registers for ia64

This patch adds more user registers to show them to xenctx for ia64.
Tested domU/domVTi on ia64.

Sample is the below.
# ./xenctx 1 0
 iip:               e000000000000810
 ipsr:              00001012087a6010   b0:                a000000100068a70
 b6:                a00000010014ff60   b7:                e000000000000800
 cr_ifs:            800000000000050a   ar_unat:           0000000000000000
 ar_pfs:            8000000000000209   ar_rsc:            0000000000000008
 ar_rnat:           0000000000000000   ar_bspstore:       a000000100c19030
 ar_fpsr:           0009804c8a70433f   event_callback_ip: a000000100067a20
 pr:                000000000005aa85   loadrs:            0000000000780000
 iva:               a000000100008000   dcr:               0000000000007e04

 r1:  a0000001010369a0
 r2:  0000000000001000   r3:  8000000000000209
 r4:  0000000000000000   r5:  0000000000000000
 r6:  0000000000000000   r7:  0000000000000000
 r8:  a000000100068a70   r9:  0000000000000100
 r10: 0000000000000000   r11: 0000000000050ac5
 sp:  a000000100c1fd80   tp:  a000000100c18000
 r14: 0000000000000001   r15: 0000000000000000
 r16: fffffffffff04c18   r17: a000000100c1fdb0
 r18: a000000100c1fdb1   r19: a000000100c1fe90
 r20: a000000100c1fe10   r21: 0000000000000000
 r22: 0000000000000001   r23: 0000000000000000
 r24: a000000100e5a448   r25: a000000100c18f10
 r26: ffffffffffff0030   r27: 0000000000000000
 r28: 000000000000001d   r29: 0000000000000000
 r30: 0000000000000000   r31: 0000000000000000

 itr: P rid    va               pa            ps      ed pl ar a d ma    key
 [0]  1 000005 a000000100000000 0000004000000 1a  64M 1  2  3  1 1 0 WB  000000
 [1]  1 000007 e000000000000000 0000000000000 18  16M 1  2  3  1 1 0 WB  000000
 [2]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000
 [3]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000
 [4]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000
 [5]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000
 [6]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000
 [7]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000

 dtr: P rid    va               pa            ps      ed pl ar a d ma    key
 [0]  1 000005 a000000100000000 0000004000000 1a  64M 1  2  3  1 1 0 WB  000000
 [1]  1 000007 ffffffffffff0000 0000000010000 10  64K 1  2  3  1 1 0 WB  000000
 [2]  1 000007 e000000000000000 0000000000000 18  16M 1  2  3  1 1 0 WB  000000
 [3]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000
 [4]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000
 [5]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000
 [6]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000
 [7]  0 000000 0000000000000000 0000000000000 00      0  0  0  0 0 0 WB  000000

Signed-off-by: Akio Takebe <takebe_akio@jp.fujitsu.com>
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>

[IA64] Support multiple page sizes in VHPT

Enable VHPT support for multiple page sizes.

Signed-off-by: Anthony Xu <anthony.xu@intel.com>

Add x86_64 to the supported architectures since otherwise the tests
don't run.

Signed-off-by: Stefan Berger <stefanb@us.ibm.com>

[IA64] Move console_start_sync() in INIT path

This patch moves console_start_sync() before first message in
ia64_init_handler(), and it cleans up ia64_init_handler().

Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>

Fix Memory assumptions in the create tests.

Use the architecture specified idea of minimum memory.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

[qemu patches] Update patches upto changeset 11870:29b02d929b7e.

Signed-off-by: Christian Limpach <Christian.Limpach@xensource.com>

This puts two small fixes in the xm-test suite:
- it turns off verbose mode of the ACM module
- copies the test policy to the policies directory only if the directory
has been created

Signed-off-by: Stefan Berger <stefanb@us.ibm.com>

Added multiarch support to xm-test.  Bumped version number to xm-test 1.0.
New README for public ramdisks.

Signed-off-by: Ewan Mellor <ewan@xensource.com>

Update buildroot configs to match snapshot downloaded for public ramdisks.

Signed-off-by: Ewan Mellor <ewan@xensource.com>

Ignore more build-time files for xm-test.

Signed-off-by: Ewan Mellor <ewan@xensource.com>

Default to appending to "extra" in XenConfig.

PowerPC needs console information from the command line.  Resetting the whole
command line causes false failures.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

Ignore generated .test files.

Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com>
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

Add ability to inspect messages from domain for arbitrary strings.

Used on PowerPC to FAIL(), if the guest domain hits a BUG() and enters XMON.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

Add configuration data for powerpc.

Allows for building of initrd, and running of tests.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

Refactor code to encapsulate architecture decisions in one place.

Also includes some whitespace fixes.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

Update .hgignore to remove artifacts of ramdisk build.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

Rename buildroot -> buildroot-i386.

Also update Makefile.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>

[XEN] Remove definition of printf. All users are switched to printk.
Signed-off-by: Keir Fraser <keir@xensource.com>

[BLKTAP] Do not allocate a descriptor for blktap control device
(minor 0).

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

[BLKTAP] Only allocate tapfd descriptors when they are requested.

Currently all are allocated at bootup, even when they will never be used.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

[BALLOON] Add a sysfs interface.
Information is located under /sys/devices/system/memory.

Original patch from Satoshi UCHIDA <s-uchida@ap.jp.nec.com>
Signed-off-by: Keir Fraser <keir@xensource.com>

[XEN] Fill in runstate_info when virtual address is registered,
even when it is registered from the 'wrong' VCPU.
Signed-off-by: Keir Fraser <keir@xensource.com>

[XM] Print qualified path to config file on domain creation.
From: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Keir Fraser <keir@xensource.com>

Allow domain config file to specify credit-scheduler parameters.
Signed-off-by: Masami Watanabe <masami.watanabe@jp.fujitsu.com>

[XM] Allow empty resource strings (e.g., when creating an empty CDROM
device). Also clean up error/acces-denied path.
Signed-off-by: Keir Fraser <keir@xensource.com>

[HVM] No need to call hvm_do_resume() on every vm entry.
Original patch from Xin Li <xin.b.li@intel.com>
Signed-off-by: Keir Fraser <keir@xensource.com>

[NET] back: Fix packet queuing so that packets are drained if the
interface is blocked for longer than 500ms. This avoids deadlock
situations where interfaces cannot be destroyed because some other
dormant interface is holding resources.

Signed-off-by: Christopher Clark <christopher.clark@cl.cam.ac.uk>
Signed-off-by: Keir Fraser <keir@xensource.com>

[BLOCK] blkback: Fix first_sect check.

The blkback code checks first_sect by computing last_sect - first_sect
+ 1. If this is not positive then the request is
rejected. Unfortunately, the calculation is stored in an unsigned
integer before the check is made so negative values will not be
rejected.

This patch fixes this by explicitly comparing first_sect with
last_sect.

The blktap code is similar but it stores the difference in a signed
integer so it's okay.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

[BLOCK] blkback: Copy shared data before verification

As it is blkback verifies the metadata from the frontend in place.
This means we run the risk of the frontend changing the data after
we've verified it.  This patch copies the data onto the stack before
verifying and using it to ensure we see a consistent snapshot.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

[ACM] Don't use uninitialised struct value if hypercall fails.
From: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Keir Fraser <keir@xensource.com>

[SOLARIS] Don't mlock() hypercall buffers.

On solaris mlock requires a page aligned address and mlock doesn't
ensure the pages won't minor page fault.

Signed-off-by: Mark Johnson <mark.johnson@sun.com>

merge with xen-unstable.hg

[IA64] Fix Windows Timer stop issue.

When doing HCT testing on Guest Windows, Windows Timer might stop,
if there is no mouse activity.

When implementing vhpi acceleration, I didn't think of below situation.
windows uses "epc" instruction to implement system call like linux,
In a very small code sequence including "epc" instruction, if there is
an external interrupt, Windows will defer handling this external interrupt
by rfi with ipsr.i=0.

Signed-off-by, Anthony Xu <anthony.xu@intel.com>

[IA64] remove unused vmx/mm.c file

Signed-off-by: Tristan Gingold <tristan.gingold@bull.net>