Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: move foreign memory functions to xc_foreign_memory.c
Now that this file exists it is a better home for these than xc_misc.c
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: add abitility to dynamically load osdep.
Add a dummy backend which always returns ENOSYS. Mainly as a compile
time testbed rather than because it is a useful backend.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: Use XC_PAGE_{SHIFT,MASK}.
Avoid dependency on xc_private.h
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: allow osdep backends to log via the xc infrastructure.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: drop fd from xc_interface
Transition to xc_osdep_handle is now complete and nothing uses
(or should be using) it.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: add ability to query OS interface for "fakeness"
i.e. not running on a real hypervisor
Allows users of the library to adjust behaviour. I don't especially
like this violation of the abstraction but both oxenstored and xapi
use this to avoid difficult to simulate operations when running on the
simulator.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_gnttab_set_max_grants()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_gnttab_munmap()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_gnttab_map_{grant_ref,grant_refs,domain_grant_refs}()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_evtchn_{pending,unmask}()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_evtchn_unbind()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_evtchn_bind_virq()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_evtchn_bind_interdomain()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_evtchn_bind_unbound_port()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_evtchn_notify()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_evtchn_fd()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_map_foreign_ranges()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_map_foreign_range()
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:47 +0000 (09:36 +0000)]
libxc: osdep: convert xc_map_foreign_{batch,bulk}
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:46 +0000 (09:36 +0000)]
libxc: osdep: convert do_xen_hypercall()
do_privcmd() was only ever used by do_xen_hypercall() so remove it.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Fri, 3 Dec 2010 09:36:46 +0000 (09:36 +0000)]
libxc: osdep: add framework for abstracting access to dom0 OS hypervisor interfaces.
This patch introduces the basic infrastructure and uses it for open
and close operations on privcmd, evtchn and gnttab devices.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Ian Campbell [Thu, 23 Dec 2010 15:32:52 +0000 (15:32 +0000)]
libxc: convert gnttab interfaces to use an opaque handle type
The xc_interface previously passed to xc_gnttab_* was only used for
logging which can now be done via the xc_gnttab handle instead.
This makes the interface consistent with the changes made to the main
interface in 21483:
779c0ef9682c.
Also update QEMU_TAG to pull in the corresponding qemu change.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Campbell [Thu, 23 Dec 2010 15:25:57 +0000 (15:25 +0000)]
libxc: convert evtchn interfaces to use an opaque handle type
This makes the interface consistent with the changes made to the main
interface in 21483:
779c0ef9682c.
Also fix some references to "struct xc_interface" which should have
been simply "xc_interface" in tools/xenpaging, and update QEMU_TAG to
pull in the corresponding qemu change.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Campbell [Thu, 23 Dec 2010 15:08:21 +0000 (15:08 +0000)]
libxc: some xc_gnttab_* functions are not Linux specific
They simply make hypercalls and perform other operations via the
abstract interface. Create xc_gnttab.c and move those functions there.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Jackson [Wed, 22 Dec 2010 17:48:31 +0000 (17:48 +0000)]
tools/hotplug: read /etc/default/xencommons if appropriate
Since 22187:
c41252a55a0a we have been installing our example
xencommons settings file in either /etc/sysconfig or /etc/default,
depending on whether /etc/sysconfig exists.
However I omitted to add the code to /etc/init.d/xencommons to
actually read either version of the file, although every other init
script seems to have it.
An effect of this misplaced/unread file is that the automatic tests
don't cause xenconsoled to collect serial logs, because the tester
edits whichever file actually exists.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Keir Fraser [Tue, 21 Dec 2010 18:10:46 +0000 (18:10 +0000)]
EPT/VT-d: disable page sharing by default.
Currently sharing these page tables causes a hang on boot on some
hardware. Disable by default until this is resolved.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Keir Fraser [Tue, 21 Dec 2010 18:09:34 +0000 (18:09 +0000)]
x86 hvm ept: Remove EPT guest linear address validation
For EPT violation resulting from an attempt to load the guest PDPTEs
as part of the execution of the MOV CR instruction, the EPT_GLA_VALID
is not valid. This situation should not happen in most situation,
since we always populate guest memory. But this is not ture for PAE
guest under the PoD/Page sharing situation. In that situation, a page
pointed by CR3 may be un-populated, and we need handle it in such
situation.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Keir Fraser [Fri, 17 Dec 2010 16:12:37 +0000 (16:12 +0000)]
tools/hotplug/Linux: Avoid dependency on iptables conntrack module.
Checking for RELATED,ESTABLISHED traffic being sent to a domU requires
connection tracking, which adds unexpected (to most users) load to
dom0. Heavily loaded systems can fill the conntrack tables.
So avoid this, be more liberal in what we accept, and leave it to domU
to police its own input.
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Fri, 17 Dec 2010 14:16:41 +0000 (14:16 +0000)]
x86, atomic: Fix 32-bit version of atomic_write64().
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Fri, 17 Dec 2010 11:51:10 +0000 (11:51 +0000)]
x86 ept: Define and use atomic_{read,write}_ept_entry().
Signed-off-by: Keir Fraser <keir@xen.org>
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Keir Fraser [Fri, 17 Dec 2010 10:46:43 +0000 (10:46 +0000)]
vtd: Reinstate ACPI DMAR on system shutdown or S3/S4/S5.
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Fri, 17 Dec 2010 09:54:22 +0000 (09:54 +0000)]
x86 hvm: Move CPUID.0xd (XSAVE) configuration into libxc.
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Fri, 17 Dec 2010 09:25:00 +0000 (09:25 +0000)]
x86:xsaveopt: Enable xsaveopt feature in Xen and guest
This patch uses "xsaveopt" instead of "xsave" if the feature is
supported in hardware to optimize task switch performance in Xen. It
also exposes the feature to guest VMs.
Signed-off-by: Zhang Fengzhe <fengzhe.zhang@intel.com>
Keir Fraser [Thu, 16 Dec 2010 20:07:03 +0000 (20:07 +0000)]
xentrace: Clean up initialisation.
Allocate no memory and print no debug messages when disabled.
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Thu, 16 Dec 2010 20:06:36 +0000 (20:06 +0000)]
vtd: Clean up a recent printk message.
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Thu, 16 Dec 2010 19:36:35 +0000 (19:36 +0000)]
x86: Define pte_{read,write}[_atomic] in terms of atomic_readN
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Thu, 16 Dec 2010 19:29:08 +0000 (19:29 +0000)]
x86: Define atomic_{read,write}{8,16,32,64} accessor functions.
These absolutely guarantee to read/write a uint*_t with a single atomic
processor instruction.
Also re-define atomic_read/atomic_write (act on atomic_t) similarly.
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Thu, 16 Dec 2010 19:04:11 +0000 (19:04 +0000)]
x86/bitops.h: Remove unused smp_mb__* macros
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Thu, 16 Dec 2010 19:01:35 +0000 (19:01 +0000)]
x86/atomic.h: Clean up for Xen code style; remove unused smp_mb__*
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Thu, 16 Dec 2010 18:46:55 +0000 (18:46 +0000)]
x86: Remove unnecessary LOCK/LOCK_PREFIX macros.
We don't support !CONFIG_SMP.
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Thu, 16 Dec 2010 18:37:30 +0000 (18:37 +0000)]
x86: move early page fault code into .init.text
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Thu, 16 Dec 2010 18:37:20 +0000 (18:37 +0000)]
x86/asm: allow some unlikely taken branches to be statically predicted this way
... by moving the respective code out of line (into sub-section 1 of
the particular section). A few other branches could be eliminated
altogether.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Olaf Hering [Thu, 16 Dec 2010 18:25:33 +0000 (18:25 +0000)]
tools/xcutils: xc_save: add missing whitespace
Add missing whitespace between the two error strings.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Olaf Hering [Thu, 16 Dec 2010 18:24:57 +0000 (18:24 +0000)]
tools/libxc: fix comment typo in xc_domain_save
evey -> every
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Christoph Egger [Thu, 16 Dec 2010 18:24:04 +0000 (18:24 +0000)]
libxl: constify libxl_create_cpupool()
Attached patch constifies libxl_create_cpupool().
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Christoph Egger [Thu, 16 Dec 2010 18:21:56 +0000 (18:21 +0000)]
tools, bsd: complete implementation of discard_file_cache
attached patch completes discard_file_cache() for NetBSD.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Campbell [Thu, 16 Dec 2010 18:04:08 +0000 (18:04 +0000)]
xenstore: set implicit path for socket connections
For now assume all such connections come from domain 0.
Failure to do this breaks various scripts which assume that they
operate relative to the domains "home directory".
This matches the behaviour of the ocaml xenstored.
Thanks to report from Olaf Hering.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Campbell [Thu, 16 Dec 2010 17:58:00 +0000 (17:58 +0000)]
tools/hotplug: Do not recursively invoke xenstore_write on error
This fixes a possible infinite recursion.
From: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Jackson [Thu, 16 Dec 2010 17:39:24 +0000 (17:39 +0000)]
tools/xl: fix race which can leave an xl monitor processing hanging
If the domain is destroyed (eg with xl destroy), it is possible that
the xl which is monitoring the domain for restart/preserve will not be
able to get the domain shutdown reason.
Before this patch, it would then ignore the domain death event and
carry on waiting, forever, for more events.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Jackson [Thu, 16 Dec 2010 16:58:39 +0000 (16:58 +0000)]
QEMU_TAG update
Keir Fraser [Thu, 16 Dec 2010 15:41:52 +0000 (15:41 +0000)]
audit_p2m: fix syntax errors in disabled debug code
If P2M_PRINTK is re-defined as ordinary printk,
some (disabled) debug statements will not compile.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Keir Fraser [Thu, 16 Dec 2010 15:38:57 +0000 (15:38 +0000)]
vtd: Require unmap_vtd_domain_page() on a couple of early exit paths.
From: Jan Beulich <JBeulich@novell.com>
Signed-off-by: Keir Fraser <keir@xen.org>
Ian Jackson [Wed, 15 Dec 2010 16:49:25 +0000 (16:49 +0000)]
Merge
Kouya Shimura [Wed, 15 Dec 2010 16:49:06 +0000 (16:49 +0000)]
tools/hotplug/Linux: force release lock if holder process is gone (fix)
22508:
57907b28e51a was unsafe for mutual exclusion. There is a case
that the owner file doesn't exist yet when an atomic mkdir operation
fails.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Keir Fraser [Wed, 15 Dec 2010 16:34:11 +0000 (16:34 +0000)]
svm: support VMCB cleanbits
Attached patch implements the VMCB cleanbits SVM feature.
Upcoming AMD CPUs introduce them and they are basically hints
for the CPU which vmcb values can be re-used from the previous
VMRUN instruction.
Each bit represents a certain set of fields in the VMCB.
Setting a bit tells the cpu it can re-use the cached value
from the previous VMRUN.
Clearing a bit tells the cpu to reload the values from the given VMCB.
Signed-off-by: Wei Huang <Wei.Huang2@amd.com>
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Wed, 15 Dec 2010 14:16:03 +0000 (14:16 +0000)]
EPT/VT-d page table sharing
Basic idea is to leverage 2MB and 1GB page size support in EPT by having
VT-d using the same page tables as EPT. When EPT page table changes, flush
VT-d IOTLB cache.
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Allen Kay <allen.m.kay@intel.com>
Ian Jackson [Wed, 15 Dec 2010 13:34:26 +0000 (13:34 +0000)]
blktap2: fix up non-ASCII characters in 21129:
bf74d9c31674
21129:
bf74d9c31674 contained UTF-8-encoded nonbreaking spaces.
Sorry for not noticing this.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Keir Fraser [Wed, 15 Dec 2010 12:12:30 +0000 (12:12 +0000)]
x86/mm: make paging_map_log_dirty_bitmap() static
now that its only caller outside paging.c has been removed.
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Keir Fraser [Wed, 15 Dec 2010 12:12:15 +0000 (12:12 +0000)]
x86/mm: fix up paging_mfn_is_dirty()
Add locking, and don't allocate the top-level page if it's not there.
Also gets rid of the default-to-1 case if there have been failed
allocations because the safer thing is actually to return 0 and avoid
modifying an un-dirtied page.
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Keir Fraser [Wed, 15 Dec 2010 12:11:57 +0000 (12:11 +0000)]
x86/mm: move mfn_is_dirty along with the rest of the log-dirty code
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Keir Fraser [Wed, 15 Dec 2010 12:10:31 +0000 (12:10 +0000)]
x86/32on64: zero-extend hypercall index before use in memory access (debug mode only)
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Wed, 15 Dec 2010 12:09:41 +0000 (12:09 +0000)]
x86-64: fix restoring of hypercall arguments after trace callout
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Wed, 15 Dec 2010 12:04:34 +0000 (12:04 +0000)]
Reduce side effects of handling '*' debug key
NMI watchdog should be suppressed when dumping IRQ handlers. Softirqs
should be handled periodically while processing non-IRQ handlers.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Wed, 15 Dec 2010 11:59:00 +0000 (11:59 +0000)]
x86: adjust other interrupt related section placement
... and remove some variables the value of which is never used
altogether.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Wed, 15 Dec 2010 11:57:54 +0000 (11:57 +0000)]
x86: adjust x2apic section placement
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Wed, 15 Dec 2010 11:56:25 +0000 (11:56 +0000)]
x86: x2apic pre-enabled but intr-remapping is not enabled
Make it aligned with Linux kernel.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Removed unnecessary bits from the original patch, and removed
intremap_enabled() with its only caller gone.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Wed, 15 Dec 2010 11:55:48 +0000 (11:55 +0000)]
x86: increase MAX_LOCAL_APIC
otherwise apicid_to_node[MAX_LOCAL_APIC] will be overrun if apicid >
255. After patch, the mapping get right.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Make this and also MAX_MADT_ENTRIES loosely depend on NR_CPUS. Tie
MAX_APICS to MAX_LOCAL_APIC. Fix initializer of x86_acpiid_to_apicid[]
to match the array member type of u32, as well as all checks in
readers of this array and x86_cpu_to_apicid[].
While the adjustment to xen_vcpu_physid_to_x86_{acpi,apic}id() is not
backward compatible, I think it should still be done this way as the
former reserving of values beyond 0xff should never have been part of
the interface. If considered impossible, a second best solution would
appear to be to make the macros depend on __XEN_INTERFACE_VERSION__.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Wed, 15 Dec 2010 11:52:14 +0000 (11:52 +0000)]
x86: mpparse and cstate need to use 32bit apic id
Instead of going with mpc_config_processor struct.
that field ony have 8 bits.
We should not change that struct, because it is shared with mptable.
Also need to increase MAX_APICS.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Rather than using a fixed value of 512, make this scale with NR_CPUS
(which obviously still doesn't cover all theoretically possible
systems, but at least allows some build time control).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Wed, 15 Dec 2010 11:21:28 +0000 (11:21 +0000)]
x86: Fix multicall handling for 6-arg hypercalls.
None exist at the moment, but this makes multicall handling consistent
with direct PV and HVM hypercall handling.
Signed-off-by: Keir Fraser <keir@xen.org>
Keir Fraser [Wed, 15 Dec 2010 11:17:41 +0000 (11:17 +0000)]
x86 hvm: Enable 6-argument hypercalls
Enable 6 argument hypercalls for HVMs. The hypercall code handles a
sixth argument in EBP or R9 but the HVM code is not passing the value.
Signed-off-by: Ross Philipson <ross.philipson@citrix.com>
Keir Fraser [Wed, 15 Dec 2010 11:09:02 +0000 (11:09 +0000)]
x86 hvm: Expose TSC_DEADLINE CPU feature to guests via CPUID.
Signed-off-by: Wei Gang <gang.wei@intel.com>
Keir Fraser [Wed, 15 Dec 2010 11:01:59 +0000 (11:01 +0000)]
x86 hvm: Emulate MSR_IA32_TSC_DEADLINE
Accesses to MSR_IA32_TSC_DEADLINE are trapped, with value stored in a
new field vlapic->hw.tdt_msr. vlapic->pt is reused in one shot mode
for vtdt to trigger expire events.
For details, please refer to the Intel Architectures Software
Developer's Manual 3A, 10.5.4.1 TSC-Deadline Mode.
Signed-off-by: Wei Gang <gang.wei@intel.com>
Keir Fraser [Wed, 15 Dec 2010 10:55:34 +0000 (10:55 +0000)]
x86: Define APIC_TIMER_MODE_xxx in apicdef.h
Signed-off-by: Wei Gang <gang.wei@intel.com>
Keir Fraser [Wed, 15 Dec 2010 10:49:57 +0000 (10:49 +0000)]
x86: Define a new function gtsc_to_gtime()
Define it to do the transform from guest tsc to guest time.
Fix the typo in gtime_to_gtsc() definition.
Signed-off-by: Wei Gang <gang.wei@intel.com>
Keir Fraser [Wed, 15 Dec 2010 10:47:05 +0000 (10:47 +0000)]
ept: Remove lock in ept_get_entry, replace with access-once semantics.
This mirrors the RVI/shadow situation, where p2m read access is
lockless because it's done in the hardware (linear map of the p2m
table).
This fixes the original bug (call it bug A) without introducing bug B
(a deadlock).
Bug A was caused by a race when updating p2m entries: between testing
if it's valid, and testing if it's populate-on-demand, it may have
been changed from populate-on-demand to valid.
My original patch simply introduced a lock into ept_get_entry, but
that caused bug B, caused by circular locking order: p2m_change_type
[grabs p2m lock] -> set_p2m_entry -> ept_set_entry ->
ept_set_middle_level -> p2m_alloc [grabs hap lock] write cr4 ->
hap_update_paging_modes [grabes hap lock] -> hap_update_cr3 ->
gfn_to_mfn -> ept_get_entry -> [grabs p2m lock]
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Keir Fraser [Wed, 15 Dec 2010 10:27:18 +0000 (10:27 +0000)]
tmem: two wrongs (or three lefts and a wrong) make a right
These two bugs apparently complement each other enough that
they escaped problems in my testing, but eventually gum
up the works and are obviously horribly wrong.
Found while developing tmem for native Linux.
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Keir Fraser [Wed, 15 Dec 2010 10:21:05 +0000 (10:21 +0000)]
hvm save: Introduce hvm_load_entry_zeroextend().
In certain cases this will allow us to load old HVM save images where
an HVM saved chunk has subsequently been extended with new
fields. Rather than fail to load the chunk, we can pad the extended
structure with zeroes, if the caller knows how to handle that.
Signed-off-by: Keir Fraser <keir@xen.org>
Acked-by: Tim Deegan <Tim.Deegan@citrix.com>
Keir Fraser [Wed, 15 Dec 2010 10:15:45 +0000 (10:15 +0000)]
hvm save: Move some inline functions into common/hvm/save.c
Signed-off-by: Keir Fraser <keir@xen.org>
Stefano Stabellini [Tue, 14 Dec 2010 19:28:25 +0000 (19:28 +0000)]
libxl: return "tap" as backend type for PHYSTYPE_QCOW2
Return "tap" as backend type for PHYSTYPE_QCOW2. This arranges that
qcow2 disks should work in xl.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Stefano Stabellini [Tue, 14 Dec 2010 19:04:03 +0000 (19:04 +0000)]
libxl: do not assume target and freemem-slack are written at the same time
This improves robustness in some pathological configurations.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Tested-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Campbell [Tue, 14 Dec 2010 18:59:44 +0000 (18:59 +0000)]
libxc: remove comment obsoleted by addition of hypercall bounce buffer.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Jackson [Tue, 14 Dec 2010 18:56:35 +0000 (18:56 +0000)]
QEMU_TAG update
Stefano Stabellini [Tue, 14 Dec 2010 18:55:53 +0000 (18:55 +0000)]
libxl: introduce libxl_need_xenpv_qemu
Introduce libxl_need_xenpv_qemu to detect if the caller needs to create
a pv qemu instance (using libxl_create_xenpv_qemu).
A positive reply depends on the number of pv console and vfbs, and the
type of disk backends.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Olaf Hering [Tue, 14 Dec 2010 18:51:55 +0000 (18:51 +0000)]
xenpaging: (sparse) documenation
Write up some sparse documentation about xenpaging usage.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Olaf Hering [Tue, 14 Dec 2010 18:51:26 +0000 (18:51 +0000)]
xenpaging: update xch usage
Instead of passing xch around, use the handle from xenpaging_t.
In the updated functions, use a local xch variable.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Olaf Hering [Tue, 14 Dec 2010 18:50:49 +0000 (18:50 +0000)]
xenpaging: do not use DPRINTF/ERROR if xch handle is unavailable
Fix DPRINTF/ERROR usage. Both macros reference a xch variable in local scope.
If xc_interface_open fails and after xc_interface_close, both can not be used
anymore. Use standard fprintf for this case.
Remove the code to print the exit value, its not really useful.
Its a left-over for debugging from an earlier patch.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Olaf Hering [Tue, 14 Dec 2010 18:50:16 +0000 (18:50 +0000)]
xenpaging: remove duplicate xc_interface_close call
Fix double-free in xc_interface_close() because xenpaging_teardown()
releases the *xch already. Remove second xc_interface_close() call.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Olaf Hering [Tue, 14 Dec 2010 18:49:40 +0000 (18:49 +0000)]
xenpaging: print number of evicted pages
Print number of evicted pages after evict loop.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Olaf Hering [Tue, 14 Dec 2010 18:48:44 +0000 (18:48 +0000)]
xenpaging: print DPRINTF ouput if XENPAGING_DEBUG is in environment
No DPRINTF output is logged because the default loglevel is to low in
libxc. Recognize the XENPAGING_DEBUG environment variable to change the
default loglevel at runtime.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Olaf Hering [Tue, 14 Dec 2010 18:47:52 +0000 (18:47 +0000)]
xenpaging: remove perror usage in xenpaging_init error path
Use the libxc error macro to report errors if initialising xenpaging
fails. Also report the actual errno string.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Olaf Hering [Tue, 14 Dec 2010 18:47:10 +0000 (18:47 +0000)]
xenpaging: close xch handle in xenpaging_init error path
Just for correctness, close the xch handle in the error path.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Jackson [Tue, 14 Dec 2010 17:38:18 +0000 (17:38 +0000)]
tools/hotplug: Do not mind if "ip link set" fails on vif backends
Most versions of netback do not support setting the MAC address. This
means that c/s
937488219719 causes the hotplug script to break for
vifs, even as it fixes the bridge-wrong-MAC-address problem for tap
devices (used for emulated nics).
The mac-setting operation is not necessary for vifs since they are
hardcoded to fe:ff* anyway.
As a band-aid, add "|| true" to the call to ip link, so that this
error does not cause the hotplug operation to fail. There will still
be an error message printed until we can fix this better.
Suggested-by: Ian Campbell <Ian.Campbell@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Kouya Shimura [Tue, 14 Dec 2010 17:15:48 +0000 (17:15 +0000)]
tools/hotplug/Linux: forced to release lock if holder process is gone
When a script using locking.sh is stopped by ctrl-C, the lock file remains.
We have to wait 100 seconds for releasing the lock at the next time.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Jackson [Tue, 14 Dec 2010 16:56:54 +0000 (16:56 +0000)]
xenstore: new XS_OPEN_SOCKETONLY flag; honour "-s" on tools' cmdline
The "-s" option to xenstore-ls is used by the xencommons startup
script to check whether xenstored is already running, before starting
it.
Since 22498:
a40455ae9ad3, "-s" has been a no-op, and libxenstore will
always fall back to using xenbus. The combined effect is that the
xencommons script deadlocks: xenstore-ls hangs waiting for xenstored,
which isn't started by xencommons because xencommons is waiting for
xenstore-ls.
In this patch, we:
* Introduce a new XS_OPEN_SOCKETONLY flag which disables the
fallback behaviour;
* Make the xenstore command line tools use the new xs_open call
rather than the old, deprecated xs_open_* calls (which are
now identical).
* Plumb the xenstore command line tools "-s" option to set the
XS_OPEN_SOCKETONLY flag.
* Change the type of the XS_OPEN_* flags so that they naturally have
type unsigned long.
The "-s" option to xenstore-ls et al, and the XS_OPEN_SOCKETONLY flag,
are intended for use by toolstack infrastructure and should not
normally be used by higher-level code.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Keir Fraser [Tue, 14 Dec 2010 09:54:10 +0000 (09:54 +0000)]
x86/iommu: account for necessary allocations when calculating Dom0's initial allocation size
As of c/s 21812:
e382656e4dcc, IOMMU related allocations for Dom0
happen only after it got all of its memory allocated, and hence the
reserve (mainly for setting up its swiotlb) may get exhausted without
accounting for the necessary allocations up front.
While not precise, the estimate has been found to be within a couple
of pages for the systems it got tested on.
For the calculation to be reasonably correct, this depends on the
patch titled "x86/iommu: don't map RAM holes above 4G" sent out
yesterday.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Tue, 14 Dec 2010 09:53:41 +0000 (09:53 +0000)]
amd-iov: eliminate open-coded PCI bus scan
Instead, use scan_pci_devices() just like VT-d does. This at once
allows making {alloc,free}_pdev() static.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Tue, 14 Dec 2010 09:52:57 +0000 (09:52 +0000)]
x86/iommu: don't map RAM holes above 4G
Matching the comment in iommu_set_dom0_mapping(), map only actual RAM
from the address range starting at 4G. It's not clear though whether
that comment is actually correct (which is why I'm sending this as
RFC), but it is certain that on systems with sparse physical memory
map we're currently wasting a potentially significant amount of memory
for setting up IOMMU page tables that will never be used.
The main question is what happens for MMIO ranges living above 4G. Of
course, the same issue would currently exist for any such ranges
sitting beyon the end of RAM.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Juergen Gross [Thu, 9 Dec 2010 13:50:56 +0000 (14:50 +0100)]
add missing libxl__free_all() calls
In various libxl functions libxl__free_all() was missing before return
Signed-off-by: juergen.gross@ts.fujitsu.com
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
committer: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Anthony PERARD [Mon, 13 Dec 2010 17:59:45 +0000 (17:59 +0000)]
libxl: Makes libxl be able to call Qemu upstream for XenPV guest.
In libxl_build_device_model_args_new:
- Adds -xen-attach options to the list of arguments to Qemu.
- Adds -vga xenfb options when vnc and sdl are not set.
- Remove disk list from the command line for XenPV as they will be
read from xenstore by Qemu.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
committer: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
tools/libxl/libxl.c | 30 +++++++++++++++++++++---------
1 files changed, 21 insertions(+), 9 deletions(-)
Anthony PERARD [Mon, 13 Dec 2010 17:59:02 +0000 (17:59 +0000)]
libxl: strdup disk path before put it in qemu args array.
In libxl_build_device_model_args_new, the path to the disk image are
freeed before there was actually use to make the arguments list of Qemu.
The patch strdups it.
This patch also changes argv[0] of the device model.
Now, it is the conventional argv[0], so is value come from
info->device_model.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
committer: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
tools/libxl/libxl.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)