Keir Fraser [Thu, 15 Oct 2009 07:31:08 +0000 (08:31 +0100)]
xm: Reuse VDI if location is same
In XenAPI mode, when we start a VM by using xm create command, VDIs
are always automatically created for VBDs. Once we shut down the
VM, then start the VM again, then VDIs are newly created. As a
result, a vdi.xml file continues to expand.
This patch reuses VDIs if location of the VDIs is same.
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
Keir Fraser [Thu, 15 Oct 2009 07:30:31 +0000 (08:30 +0100)]
x86: Remove unused temporay variable 'old_gvec'.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Keir Fraser [Thu, 15 Oct 2009 07:29:33 +0000 (08:29 +0100)]
lockprof: Fix x86_32 build and clean up coding style
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Thu, 15 Oct 2009 07:16:42 +0000 (08:16 +0100)]
xend: destroy stubdoms synchronously
This patch makes the destruction of stubdoms a synchronous event,
therefore it is no longer possible to run out of memory when rebooting
a guest because the stubdom of the old guest is always destroyed
before the creation of the new guest.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Keir Fraser [Wed, 14 Oct 2009 08:09:23 +0000 (09:09 +0100)]
xm,xend: Add new option "change_home_server" to xm migrate
This patch adds a new option to xm migrate command. A concept of the
option is inspired from XenServer/XenCenter. The concept is "Change
home server (affinity)." The option name is "change_home_server."
Currently, a config.sxp file of a managed domain is not migrated to a
destination server even if the migration of the managed domain
succeeds. The config.sxp file is kept in a source server.
By the patch, the config.sxp file is migrated with the managed domain.
The config.sxp file is unregistered from the source server, then the
config.sxp file is registered to the destination server.
BTW, should the config.sxp file be always migrated without the option?
If the managed domain is migrated without the option, the managed
domains exist on both the source server and the destination server.
(Of course, the managed domain on the source server is "halted" state,
and the managed domain on the destination server is "running" state.)
Is it good that the managed domains with a same UUID exist on both
servers? (In the patch, I added the option for compatible.)
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
Keir Fraser [Wed, 14 Oct 2009 08:08:16 +0000 (09:08 +0100)]
Keir Fraser [Wed, 14 Oct 2009 08:07:51 +0000 (09:07 +0100)]
Spinlock profiling (enable in build with lock_profile=y)
Adds new tool xenlockprof to run from dom0.
From: Juergen Gross <juergen.gross@ts.fujitsu.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Wed, 14 Oct 2009 07:58:47 +0000 (08:58 +0100)]
minios: fix console end of line: \n\r -> \r\n
Change the end of line produced by minios' console from \n\r to \r\n.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Keir Fraser [Wed, 14 Oct 2009 07:56:55 +0000 (08:56 +0100)]
xend: call pci_device_configure on the stubdom
Whenever pci_device_configure is called on a guest that has a stubdom,
call pci_device_configure on the stubdom as well.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Keir Fraser [Wed, 14 Oct 2009 07:56:25 +0000 (08:56 +0100)]
xend: allow a device to be assigned to a guest and its stubdom
This patch allows a pci device to be passed through an HVM guest and
its own stubdom at the same time.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Keir Fraser [Wed, 14 Oct 2009 07:55:43 +0000 (08:55 +0100)]
minios: fix minios console
MiniOS' console_print tries to expand '\n' into "\n\r" in place,
causing page faults if the string resides in text.
Use a duplicate of the string instead.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Keir Fraser [Wed, 14 Oct 2009 07:54:58 +0000 (08:54 +0100)]
Add build option to allow more hypercalls from stubdoms
Stubdoms need to be able to make all the passthrough related
hypercalls on behalf of the guest (for now).
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Wed, 14 Oct 2009 07:33:11 +0000 (08:33 +0100)]
stubdom pcilib: define endianness for minios
Include endian.h for MiniOS.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Keir Fraser [Wed, 14 Oct 2009 07:31:07 +0000 (08:31 +0100)]
minios pcifront: translate physical into virtual addresses
Qemu understands physical pci addresses while pciback expects virtual
pci addresses: this patch adds a translation function in pcifront to
make the conversion.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Keir Fraser [Wed, 14 Oct 2009 07:29:56 +0000 (08:29 +0100)]
pv-on-hvm: Adjust mkbuildtree to handle pv_ops header placement
Due to the movement of the arch include directories, we need to adjust
where mkbuildtree looks for headers when building the pv drivers.
Also add a check for the location of features.c
Signed-off-by: Charles Arnold <carnold@novell.com>
Keir Fraser [Mon, 12 Oct 2009 11:56:00 +0000 (12:56 +0100)]
x86: reduce the uses of CONFIG_COMPAT
... to where it really is needed and meaningful (i.e. in some places
it seems to make more sense to use __x86_64__ instead).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Fri, 9 Oct 2009 08:34:03 +0000 (09:34 +0100)]
x86: trust new architecturally-defined TSC Invariant bit on Intel systems
Trust new architecturally-defined TSC Invariant bit (on
Intel systems only for now, AMD TBD).
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Fri, 9 Oct 2009 08:33:29 +0000 (09:33 +0100)]
x86: Fix build after ia64 grant-table build fix.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Fri, 9 Oct 2009 07:56:43 +0000 (08:56 +0100)]
xend: Fix VDI-VBD link for XenAPI
I detected problems of VDI-VBD link again.
- In the case of inactive managed domains, VDI->VBD link was lost
by xend restarting (or host OS rebooting).
- In the case of active domains, both VDI->VBD link and VBD->VDI
link were lost by xend restarting.
When xend is restarted, information of VDI instances is restored from
a vdi.xml file. But the vdi.xml file does not have UUID of VBD
because xend does not write the UUID to the vdi.xml file. Therefore,
VDI->VBD link is lost. When xend is restarted, information of VBD
instances is restored from xenstore. But xenstore does not have UUID
of VDI. Therefore, VBD->VDI link is lost.
This patch solves the problems. VDI instances stop having UUID of
VBD. Instead, xend gathers UUID of VBD each time it's required. The
method is the same as Network->VIF link. Information of VBD instances
is restored not only from xenstore but from a config.sxp file. UUID
of VDI is restored from the config.sxp file.
FYI, VBD->VDI link of inactive managed domains is not lost because
information of VBD instances is restored from the config.sxp file.
UUID of VDI is written by xend to the config.sxp file.
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
Keir Fraser [Fri, 9 Oct 2009 07:55:43 +0000 (08:55 +0100)]
blktap2: Check gcrypt library has MD5() function.
From: Dulloor <dulloor@gmail.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Fri, 9 Oct 2009 07:54:25 +0000 (08:54 +0100)]
Fix the IA64 build of the hypervisor.
This is completely untested, beyond confirming that it compiles.
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Keir Fraser [Fri, 9 Oct 2009 07:53:42 +0000 (08:53 +0100)]
xend: Fix bug in superpage flag handling
During testing I discovered that using a bootloader magically clears
the superpage flag out of the config. This small patch fixes that
behavior.
From: Dave McCracken <dcm@mccr.org>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Thu, 8 Oct 2009 08:24:32 +0000 (09:24 +0100)]
Obtain Linux kernels via git-over-http
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Thu, 8 Oct 2009 07:51:51 +0000 (08:51 +0100)]
x86 tsc: Fix check_tsc_warp() bug and add copyright notice
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Thu, 8 Oct 2009 07:48:52 +0000 (08:48 +0100)]
xsm: Correct the usage of XSM_ENABLE after c/s 20285.
Signed-off-by : Machon Gregory <mbgrego@tycho.ncsc.mil>
Keir Fraser [Thu, 8 Oct 2009 07:47:11 +0000 (08:47 +0100)]
Keir Fraser [Wed, 7 Oct 2009 15:29:03 +0000 (16:29 +0100)]
x86 shadow: Fix the build.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 15:10:19 +0000 (16:10 +0100)]
libxenctrl: Fix non-Linux definitions of xc_gnttab_map_table*().
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 14:58:26 +0000 (15:58 +0100)]
Fix hypervisor crash with unpopulated NUMA nodes
On NUMA systems with memory-less nodes Xen crashes quite early in the
hypervisor (while initializing the heaps). This is not an issue if
this happens to be the last node, but "inner" nodes trigger this
reliably. On multi-node processors it is much more likely to leave a
node unequipped. The attached patch fixes this by enumerating the
node via the node_online_map instead of counting from 0 to num_nodes.
The resulting NUMA setup is still somewhat strange, but at least it
does not crash. In lowlevel/xc/xc.c there is again this enumeration
bug, but I suppose we cannot access the HV's node_online_map from this
context, so the xm info output is not correct (but xm debug-keys H
is). I plan to rework the handling of memory-less nodes later.
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Keir Fraser [Wed, 7 Oct 2009 14:56:05 +0000 (15:56 +0100)]
x86 shadow: fix the check for having killed the guest in the fault handler.
We care only about when we have called domain_crash() (and therefore
shadow invariants may not hold) and shouldn't spuriously inject
pagefaults into guests that are shutting down for other reasons.
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 09:26:39 +0000 (10:26 +0100)]
libxenctrl: Build fix after gnttab_v2 changes.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 07:42:50 +0000 (08:42 +0100)]
PVUSB: Update public header.
Signed-off-by: Noboru Iwamatsu <n_iwamatsu@jp.fujitsu.com>
Keir Fraser [Wed, 7 Oct 2009 07:07:06 +0000 (08:07 +0100)]
x86 hvm: On failed hvm_send_assist_req(), io emulation state should be
reset to HVMIO_none, as no IO is in flight.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 06:50:20 +0000 (07:50 +0100)]
Scattered code arrangement cleanups.
- remove redundant declarations
- add/move prototypes to headers
- move things where they belong to
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Keir Fraser [Wed, 7 Oct 2009 06:47:50 +0000 (07:47 +0100)]
Tools-side support for creating and destroying netchannel2 interfaces.
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 06:47:21 +0000 (07:47 +0100)]
Transitive grant support.
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 06:46:59 +0000 (07:46 +0100)]
Implement sub-page grant support.
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 06:46:36 +0000 (07:46 +0100)]
Introduce a grant_entry_v2 structure.
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 06:46:14 +0000 (07:46 +0100)]
Rename the struct grant_entry to struct grant_entry_v1, so that it
isn't in the way when we introduce struct grant_entry_v2.
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 06:45:39 +0000 (07:45 +0100)]
Optimize memcpy for x86 arch. If source buffers does not start at a 64
bit boundary, copy a few bytes at the beginnig up to next 64-bit
boundary and then does an aligned copy for the remaining data. This
can reduce the copy cost by up to 50%.
Signed-off-by: Jose Renato Santos <jsantos@hpl.hp.com>
Keir Fraser [Wed, 7 Oct 2009 06:45:14 +0000 (07:45 +0100)]
Slightly more accurate dependency tracking for the .c and .h files in
include/compat. They should depend on the scripts which generate
them, as well as the inputs to those scripts.
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 06:44:50 +0000 (07:44 +0100)]
Simplify include/xen/grant_table.h a bit:
-- INITIAL_GRANT_ENTRIES is never used, so can be removed.
-- Simplify num_act_frames_from_sha_frames a little.
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Keir Fraser [Wed, 7 Oct 2009 06:43:50 +0000 (07:43 +0100)]
x86 vtsc: use debug-key to check/test reliable tsc
Previous attempt was rejected as too intrusive, but
further app rdtsc optimization work is very dependent
on Xen being able to determine if TSC is reliable
or not.
This patch starts to introduce the concept of
X86_FEATURE_TSC_RELIABLE as it is defined and
used by Linux, but uses it and tests it only in
a debug-key for now, so that a wide variety of
hardware can be measured by the broader Xen
community to confirm/deny TSC assumptions.
The eventual goal is for the evaluation of
TSC reliability to be exported to userland
so that apps can use rdtsc natively if and when
it is safe to do so.
(See http://lists.xensource.com/archives/html/xen-devel/2009-10/msg00056.html)
Note that the original Linux code for tsc_sync.c
uses a raw spinlock to ensure the "fastest, inlined,
non-debug version of a critical section". Xen
doesn't provide a _raw_spin_lock() so I used
regular spinlocks, but I would prefer the code
to use something more strict as Linux does.
(Also includes a minor nit: "NOSTOP" was used in
an early version of a Linux patch, but mainline
now uses "NONSTOP"... correct this for consistency.)
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Keir Fraser [Wed, 7 Oct 2009 06:35:06 +0000 (07:35 +0100)]
hvm, vtsc: missing vtsc counter for hvm guests
This counter line got dropped somewhere along the way.
Confused me a bit because the count was always being
reported as 0.
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Keir Fraser [Wed, 7 Oct 2009 06:21:31 +0000 (07:21 +0100)]
x86 hvm: Do not incorrectly retire an instruction emulation when a
read/write cycle to qemu is dropped due to guest suspend.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Tue, 6 Oct 2009 09:11:53 +0000 (10:11 +0100)]
xend: Updated setpolicy to support loading of flask policy
Updated xm setpolicy command to support the loading of flask security
policies.
Signed-off-by : Machon Gregory <mbgrego@tycho.ncsc.mil>
Signed-off-by : George S. Coker, II <gscoker@alpha.ncsc.mil>
Keir Fraser [Tue, 6 Oct 2009 09:11:14 +0000 (10:11 +0100)]
[VTD] don't enable device ATS if root port does not support it
Fixed a bug in the code that enables ATS capability on the device even
when root port does not support it.
Signed-off-by: Allen Kay <allen.m.kay@intel.com>
Keir Fraser [Tue, 6 Oct 2009 09:09:21 +0000 (10:09 +0100)]
x86: Emulated TSC should run at same (1GHz) rate in guest kernel and apps.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Fri, 2 Oct 2009 08:10:27 +0000 (09:10 +0100)]
credit scheduler: fix credits overflow
In changing credits-per-tick from 100 to
1000000, a possible overflow
was introduced in the accounting algorithm, when credit totals (which
can be in the millions) gets multiplied by a weight (typically 256):
th eresult can easily overflow a signed 32-bit variable.
Fix this by reverting to 100 credits per tick, and maintain long-term
fairness/correctness by tracking at the nanosecond level exactly how
much execution time has been accounted to each VCPU. We do this by
rounding execution time so far to nearest number of credits, but then
remember the VCPU's 'partial credit balance'.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Thu, 1 Oct 2009 11:29:33 +0000 (12:29 +0100)]
Fix recursive lock p2m lock acquisition in POD code
The POD code can take the p2m lock from inside a lookup. This causes
a crash if anyone calls gfn_to_mfn* with the p2m lock held, which is
quite a few places. Make the POD code understand that it may be
called with the lock held, and DTRT about talking or releasing it.
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Keir Fraser [Thu, 1 Oct 2009 11:28:54 +0000 (12:28 +0100)]
stubdom/minios: re-structure headers
As part of making stubdom usable on NetBSD, it is necessary to
restructure the minios headers to avoid conflicts with NetBSD's
crossbuild toolchain.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Keir Fraser [Thu, 1 Oct 2009 11:27:01 +0000 (12:27 +0100)]
VNIF: Using smart polling instead of event notification.
Patch the Xen version of ring.h
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Keir Fraser [Thu, 1 Oct 2009 11:26:15 +0000 (12:26 +0100)]
Fix memory leak in libxenstore python bindings
Temporary tuple0 python object was not freed at the end of
xspy_set_permissions() in case no error occurred. To reduce code
duplication, this path reuses the cleanup code.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Keir Fraser [Thu, 1 Oct 2009 11:25:36 +0000 (12:25 +0100)]
Disable HPET broadcast mode on kexec.
Without this the new kernel cannot receive timer interrupts from the
legacy sources. Hangs are observed in the second kernel's
"check_timer()" routing or at "Checking 'hlt' instruction."
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Keir Fraser [Wed, 30 Sep 2009 07:51:21 +0000 (08:51 +0100)]
xend: allow domain creation with multiple empty CD-ROM devices
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Wed, 30 Sep 2009 07:44:57 +0000 (08:44 +0100)]
xend: Fix memory leaks in libxc python bindings
Reference counters are not correctly decreased for python object in
several places in python bindings for libxc. Most of them are around
PyList_Append(), which unlike PyList_SetItem() does increment
reference counter of the object being added to a list.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Keir Fraser [Wed, 30 Sep 2009 07:43:34 +0000 (08:43 +0100)]
Cleanup: Make local functions static and remove unused functions.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Keir Fraser [Tue, 29 Sep 2009 10:28:33 +0000 (11:28 +0100)]
svm: a few cleanups
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Keir Fraser [Tue, 29 Sep 2009 10:27:53 +0000 (11:27 +0100)]
vmx: add the support of XSAVE/XRSTOR to VMX guest
XSAVE/XRSTOR manages the existing and future processor extended states
on x86 architecture.
The XSAVE/XRSTOR infrastructure is defined in Intel SDMs:
http://www.intel.com/products/processor/manuals/
The patch uses the classical CR0.TS based algorithm to manage the
states on context switch. At present, we know 3 bits in the
XFEATURE_ENABLED_MASK: FPU, SSE and YMM. YMM is defined in Intel AVX
Programming Reference: http://software.intel.com/sites/avx/
Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>
Keir Fraser [Tue, 29 Sep 2009 10:22:17 +0000 (11:22 +0100)]
mce: Support machine check logging left over from previous reset.
Signed-off-by: Kazuhiro Suzuki <kaz@jp.fujitsu.com>
Keir Fraser [Mon, 28 Sep 2009 12:59:35 +0000 (13:59 +0100)]
xend: Fix save/restore after previous changeset.
Platform variable 'tsc_native' is saved/restored as a string, so must
be converted to an integer before passing to domain_set_tsc_native().
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Mon, 28 Sep 2009 09:01:10 +0000 (10:01 +0100)]
x86: Allow TSC mode (emulate vs native) to be configured per domain.
The default is to emulate. Old saved images will be restored with
legacy behaviour however (native TSC, no emulation).
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Mon, 28 Sep 2009 07:28:26 +0000 (08:28 +0100)]
AMD IOMMU: Fix boot output on non-iommu system
Signed-off-by: Wei Wang <wei.wang2@amd.com>
Keir Fraser [Fri, 25 Sep 2009 14:20:58 +0000 (15:20 +0100)]
x86 hvm: *really* fix missing ticks bug of c/s 20218
With c/s 20218, timer ticks might be missed when IRQs of a timer are
queued. "Next scheduled time" is accumulated wrongly.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Fri, 25 Sep 2009 14:12:45 +0000 (15:12 +0100)]
ia64: Fix build for xen/ia64
Define the related dummy functions and move the macros
as public to fix the build issue.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Keir Fraser [Fri, 25 Sep 2009 09:50:18 +0000 (10:50 +0100)]
x86: Make assigned devices' interrupts delivery to right vcpu.
This patch targets for reducing IPIs when delivery VT-d's devices'
intrs to target vcpus. According to the experiments leveraging 10G
Oplin NIC card, CPU utilization can reduce 5%-6% and NIC's bandwidth
keeps unchanged through testings. And this patch can always benefit
UP guests with MSI-capable devices assigned and SMP guests whose
lapic's destination mode is physical mode. And also it can benefit
SMP guests whose lapic's dest_mode is logical mode but only one
destination is specified. So it should cover major cases in real
environment. Currenlty, this patch intercepts the programming for MSI
intr status, and caculate the destination id for the pirq when do the
programming in advance. When vcpu migratio n occurs or guest
re-programe MSI status, it checks that whether needs to set the
corresponding pirq's affinity of assigned devices and make vcpu's
affinity and pirq's consistent to reduce the IPIs eventually.
Signed-off-by : Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Xiaohui Xin <xiaohui.xin@intel.com>
Keir Fraser [Fri, 25 Sep 2009 09:47:36 +0000 (10:47 +0100)]
PoD: Allocate 4k pages if 2 meg allocation fails
In p2m_pod_set_cache_target:
* If a 2-meg allocation fails, try a 4k allocation
* If both allocations fail, return -ENOMEM so that the domain build
will fail.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Keir Fraser [Fri, 25 Sep 2009 09:46:13 +0000 (10:46 +0100)]
xend: Unlink VDI instances and VBD instances
VBD information in xend does not have a VDI value if XenAPI mode
is invalid. A new patch confirms the VDI value is valid. So, the new
patch cuts off VDI->VBD links if the VDI value is valid.
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
Keir Fraser [Fri, 25 Sep 2009 09:45:02 +0000 (10:45 +0100)]
x86, mce: Control Machine Check Log output verbosity
This small patch is for controlling machine check related Xen log
output. When set mce_verbosity=verbose in command line, all mce
related logs will be printed. Otherwise, those logs will be
eliminated.
Signed-off-by: Liping Ke <liping.ke@intel.com>
Keir Fraser [Wed, 23 Sep 2009 17:19:30 +0000 (18:19 +0100)]
x86: minor cleanup of code that writes to TSC
While working on TSC-handling code, I missed an important
piece of code that writes to TSC because it does it
differently than other pieces of code. Fix that,
and also cleanup a bit to avoid hardcoded constants
and use wrmsrl instead of wrmsr plus handwritten 64-bit
dismembering code.
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Keir Fraser [Wed, 23 Sep 2009 17:18:29 +0000 (18:18 +0100)]
Keir Fraser [Tue, 22 Sep 2009 13:19:38 +0000 (14:19 +0100)]
EPT: Assert p2m is locked in ept_sync_domain().
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Keir Fraser [Tue, 22 Sep 2009 13:18:51 +0000 (14:18 +0100)]
x86: Support more than 256 pins of ioapic.
Some large system may have many ioapics which
have more than 256 pins totally. To support this
case, just let pirq == irq and build 1:1 mapping
between them, and this is based on the assumpation
that pirq == GSI number in dom0 for iopaic IRQs.
Thank Jan Beulich from Novell for reporting the issue
in pv_ops dom0.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Keir Fraser [Tue, 22 Sep 2009 13:11:09 +0000 (14:11 +0100)]
x86: Fix the build.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Tue, 22 Sep 2009 08:18:25 +0000 (09:18 +0100)]
EPT: More efficient ept_sync_domain().
Rather than always flushing all CPUs, only flush CPUs this domain is
currently active on, and defer flushing other CPUs until this domain
is scheduled onto them (or the domain is destroyed).
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Tue, 22 Sep 2009 07:37:32 +0000 (08:37 +0100)]
mca: Fix several issues for MCA UCR error handling
This patch is for fixing several issues for MCA UCR error handling on
latest Intel platforms, including:
1) For UCR error, the is 0xC0 ~ 0xCF instead of just C0
2) Synchronization issues for clearing error finding flag and clearing
global MCIP flag. Otherwise, in some cases, MCIP flag can't be cleared.
Signed-off-by: Liping Ke <liping.ke@intel.com>
Keir Fraser [Tue, 22 Sep 2009 07:36:40 +0000 (08:36 +0100)]
tboot: fix tboot memory mapping for 32b
This patch used fixmap to get TXT heap base/size and SINIT base/size
from TXT pub config registers (whose address starts from 0xfed20000),
and get DMAR table copy from TXT heap (whose address may start from
0x7d520000) for tboot, instead of using map_pages_to_xen(), which will
cause panic on x86_32.
Signed-off-by: Shane Wang <shane.wang@intel.com>
Keir Fraser [Tue, 22 Sep 2009 07:28:26 +0000 (08:28 +0100)]
x86: allow IRQs to work without APIC again
Non-IO-APIC IRQs must get 1:1 mapped between domain PIRQ and Xen IRQ.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Tue, 22 Sep 2009 07:27:10 +0000 (08:27 +0100)]
Improve CSE in grant table code
The grant table code had some particularly frequent repetitions of
mfn_to_page() on each time the same input arguments. To help the
compiler (which can do only a limited job on CSE), this adds explicit
caching of the transformation result in a few places.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Tue, 22 Sep 2009 07:26:16 +0000 (08:26 +0100)]
Introduce new flavour of map_domain_page()
Introduce a variant of map_domain_page() directly getting passed a
struct page_info * argument, based on the observation that in many
places the argument to this function so far simply was the result of
page_to_mfn(). This is meaningful for the x86-64 case where
map_domain_page() really just is an invocation of mfn_to_virt(), and
hence the combined mfn_to_virt(page_to_mfn()) now represents a
needless round trip conversion compressed -> uncompressed ->
compressed of the MFN representation.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Tue, 22 Sep 2009 07:19:16 +0000 (08:19 +0100)]
x86: map M2P table sparsely
Avoid backing M2P table holes with memory, when those holes are large
enough to cover an exact multiple of large pages.
For the sake of saving and migrating guests, XENMEM_machphys_mfn_list
fills the holes in the array it returns with the MFN for the previous
range returned (thanks to Keir pointing out that it really doesn't
matter *what* MFN gets returned for invalid ranges). Using the most
recently encountered MFN (rather than e.g. always the first one)
represents an attempt to cut down on the number of references these
pages will get when they get mapped into a privileged domain's address
space.
This also allows for saving a couple of 2M pages even on certain
"normal" systems.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Tue, 22 Sep 2009 07:18:19 +0000 (08:18 +0100)]
x86: map frame table sparsely
Avoid backing frame table holes with memory, when those holes are
large enough to cover an exact multiple of large pages. This is based
on the introduction of a bit map, where each bit represents one such
range, thus allowing mfn_valid() checks to easily filter out those
MFNs that now shouldn't be used to index the frame table.
This allows for saving a couple of 2M pages even on "normal" systems.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Tue, 22 Sep 2009 07:16:49 +0000 (08:16 +0100)]
x86-64: reduce range spanned by 1:1 mapping and frame table indexes
Introduces a virtual space conserving transformation on the MFN thus
far used to index 1:1 mapping and frame table, removing the largest
range of contiguous bits (below the most significant one) which are
zero for all valid MFNs from the MFN representation, to be used to
index into those arrays, thereby cutting the virtual range these
tables must cover approximately by half with each bit removed.
Since this should account for hotpluggable memory (in order to not
requiring a re-write when that gets supported), the determination of
which bits are candidates for removal must not be based on the E820
information, but instead has to use the SRAT. That in turn requires a
change to the ordering of steps done during early boot.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Tue, 22 Sep 2009 07:14:48 +0000 (08:14 +0100)]
x86-64: extend manageable memory range to 5Tb
Extend the virtual range reserved for the 1:1 mapping to cover 5Tb,
and make the virtual size of the frame table gets match whatever the
1:1 table can cover.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Keir Fraser [Tue, 22 Sep 2009 07:06:14 +0000 (08:06 +0100)]
vpmu_core2: support newer processors
Add code to get fully virtualized performance counters with newer
processors (which I'am able to test!) The most stuff is to check for
reserved bits in the control and counter register.
Signed-off-by: Dietmar Hahn <dietmar.hahn@ts.fujitsu.com>
Keir Fraser [Tue, 22 Sep 2009 07:04:58 +0000 (08:04 +0100)]
x86 hvm: small cleanup in vpmu
Replace the special vpmu define LVTPC_HVM_PMU with the global
used define PMU_APIC_VECTOR to avoid different names for the
same thing.
Signed-off-by: Dietmar Hahn <dietmar.hahn@ts.fujitsu.com>
Keir Fraser [Tue, 22 Sep 2009 07:02:50 +0000 (08:02 +0100)]
pv_ops: Build xen/master branch rather than xen-tip/master
Keir Fraser [Tue, 22 Sep 2009 07:02:01 +0000 (08:02 +0100)]
Keir Fraser [Tue, 22 Sep 2009 07:01:06 +0000 (08:01 +0100)]
x86: Fix memory leak in mce_wrmsr
Signed-off-by: Kazuhiro Suzuki <kaz@jp.fujitsu.com>
Keir Fraser [Tue, 22 Sep 2009 07:00:36 +0000 (08:00 +0100)]
x86 hvm: fix missing ticks bug of c/s 20218
With c/s 20218, timer ticks might be missed when IRQs of a timer are
queued. "Next scheduled time" is accumulated wrongly.
Thanks to Christoph for the report.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Reported-by: Christoph Egger <Christoph.Egger@amd.com>
Keir Fraser [Fri, 18 Sep 2009 13:45:40 +0000 (14:45 +0100)]
Revert 20221:
fc94d586d02f
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Fri, 18 Sep 2009 07:46:32 +0000 (08:46 +0100)]
iommu: Fix pirq conflict issue when guest adopts per-cpu vector.
Latest Linux and Windows may adopt per-cpu vector instead of global
vector, so same vector in different vcpu may correspond to different
interrupt sources. That is to say, vector and pirq should be 1:n
mapping, and the array msi_gvec_pirq can't meet the mapping
requirement, so need to improve the related logic, otherwise it may
introduce strange issues.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Keir Fraser [Fri, 18 Sep 2009 07:44:38 +0000 (08:44 +0100)]
xend: Implement VIF.get_network
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
Keir Fraser [Fri, 18 Sep 2009 07:29:46 +0000 (08:29 +0100)]
AMD IOMMU: Extend the loop counter for polling completion wait bit.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
Keir Fraser [Fri, 18 Sep 2009 07:29:19 +0000 (08:29 +0100)]
AMD IOMMU: Remove unused definitions.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
Keir Fraser [Fri, 18 Sep 2009 07:28:52 +0000 (08:28 +0100)]
AMD IOMMU: If interrupt remapping is disabled, then do not update
interrupt remapping table with IOAPIC write.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
Keir Fraser [Fri, 18 Sep 2009 07:28:20 +0000 (08:28 +0100)]
AMD IOMMU: Allow enabling iommu debug output at run time.
The old compile-time option is removed.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
Keir Fraser [Fri, 18 Sep 2009 07:27:38 +0000 (08:27 +0100)]
xend: Unlink VDI instances and VBD instances
When VBD instances are destroyed by xm delete command, VDI
instances keep linking to the VBD instances unilaterally.
Signed-off-by: Masaki Kanno <kanno.masaki@jp.fujitsu.com>
Keir Fraser [Fri, 18 Sep 2009 07:26:53 +0000 (08:26 +0100)]
Revert 20194:
582970a2d2dc
Excessively slows down domain creation in debug builds.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Wed, 16 Sep 2009 08:30:41 +0000 (09:30 +0100)]
x86 hvm: suspend platform timer emulation while its IRQ is masked
This patch gets rid of a timer which IRQ is masked from vcpu's timer
list. It reduces the overhead of VM EXIT and context switch of vm.
Also fixes a potential bug.
(1) VCPU#0: mask the IRQ of a timer. (ex. vioapic.redir[2].mask=1)
(2) VCPU#1: pt_timer_fn() is invoked by expiration of the timer.
(3) VCPU#1: pt_update_irq() is called but does nothing by
pt_irq_masked()==1.
(4) VCPU#1: sleep by halt.
(5) VCPU#0: unmask the IRQ of the timer.
After that, no one wakes up the VCPU#1.
IRQ of ISA is masked by:
- PIC's IMR
- IOAPIC's redir[0]
- IOAPIC's redir[N].mask
- LAPIC's LVT0
- LAPIC enabled/disabled
IRQ of LAPIC timer is masked by:
- LAPIC's LVTT
- LAPIC disabled
When above stuffs are changed, the corresponding vcpu is kicked and
suspended timer emulation is resumed.
In addition, a small bug fix in pt_adjust_global_vcpu_target().
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>