mtr_aps_delayed_init was declared u32 and made global, but it only
ever takes boolean values and is only ever used in
arch/x86/kernel/cpu/mtrr/main.c. Declare it "static bool" and remove
external references.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
SDM Vol 3a section titled "MTRR considerations in MP systems" specifies
the need for synchronizing the logical cpu's while initializing/updating
MTRR.
Currently Linux kernel does the synchronization of all cpu's only when
a single MTRR register is programmed/updated. During an AP online
(during boot/cpu-online/resume) where we initialize all the MTRR/PAT registers,
we don't follow this synchronization algorithm.
This can lead to scenarios where during a dynamic cpu online, that logical cpu
is initializing MTRR/PAT with cache disabled (cr0.cd=1) etc while other logical
HT sibling continue to run (also with cache disabled because of cr0.cd=1
on its sibling).
Starting from Westmere, VMX transitions with cr0.cd=1 don't work properly
(because of some VMX performance optimizations) and the above scenario
(with one logical cpu doing VMX activity and another logical cpu coming online)
can result in system crash.
Fix the MTRR initialization by doing rendezvous of all the cpus. During
boot and resume, we delay the MTRR/PAT init for APs till all the
logical cpu's come online and the rendezvous process at the end of AP's bringup,
will initialize the MTRR/PAT for all AP's.
For dynamic single cpu online, we synchronize all the logical cpus and
do the MTRR/PAT init on the AP that is coming online.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
No code changes except printk levels (although some of the K6
mtrr code might be clearer if there were a few as would
splitting out some of the intel cache code).
Signed-off-by: Alan Cox <alan@linux.intel.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
We already use a lot of cpu_has_ helpers.
Lets do here the same for consistency.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090705160154.GB4791@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai noticed that i defined BIOS_BUG_MSG but added no
usage for it. The usage is to clean up this turd in generic.c:
printk(KERN_WARNING "WARNING: BIOS bug: VAR MTRR %d "
"contains strange UC entry under 1M, check "
"with your system vendor!\n", i);
Breaking printk lines in the middle looks ugly, is hard to read
and breaks 'git grep'. Use the BIOS_BUG_MSG instead.
Also complete the moving of structure definitions and variables
to the top of the file.
Reported-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090703164225.GA21447@elte.hu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Fix following trivial style problems:
ERROR: trailing whitespace X 25
WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
WARNING: Use #include <linux/kvm_para.h> instead of <asm/kvm_para.h>
ERROR: do not initialise externals to 0 or NULL X 2
ERROR: "foo * bar" should be "foo *bar" X 5
ERROR: do not use assignment in if condition X 2
WARNING: line over 80 characters X 8
ERROR: return is not a function, parentheses are not required
WARNING: braces {} are not necessary for any arm of this statement
ERROR: space required before the open parenthesis '(' X 2
ERROR: open brace '{' following function declarations go on the next line
ERROR: space required after that ',' (ctx:VxV) X 8
ERROR: space required before the open parenthesis '(' X 3
ERROR: else should follow close brace '}'
WARNING: space prohibited between function name and open parenthesis '('
WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable X 2
Also use pr_debug and pr_warning where possible.
total: 50 errors, 14 warnings
arch/x86/kernel/cpu/mtrr/main.o:
text data bss dec hex filename
3668 116 4156 7940 1f04 main.o.before
3668 116 4156 7940 1f04 main.o.after
md5:
e01af2fd28deef77c8d01e71acfbd365 main.o.before.asm
e01af2fd28deef77c8d01e71acfbd365 main.o.after.asm
Suggested-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090703164225.GA21447@elte.hu>
Cc: Avi Kivity <avi@redhat.com> # Avi, please have a look at the kvm_para.h bit
[ More cleanups ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Fix:
ERROR: do not use C99 // comments
ERROR: "foo * bar" should be "foo *bar" X 2
Suggested-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090703164225.GA21447@elte.hu>
[ More tidyups ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Fix:
WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
ERROR: trailing whitespace X 7
ERROR: trailing statements should be on next line X 3
WARNING: line over 80 characters X 5
ERROR: space required before the open parenthesis '('
arch/x86/kernel/cpu/mtrr/if.o:
text data bss dec hex filename
2239 4 0 2243 8c3 if.o.before
2239 4 0 2243 8c3 if.o.after
md5:
78d1f2aa4843ec6509c18e2dee54bc7f if.o.before.asm
78d1f2aa4843ec6509c18e2dee54bc7f if.o.after.asm
Suggested-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090703164225.GA21447@elte.hu>
[ More cleanups to make the code more consistent. ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Fix following trivial style problems:
ERROR: trailing whitespace X 4
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
WARNING: braces {} are not necessary for single statement blocks X 3
ERROR: "foo * bar" should be "foo *bar"
WARNING: line over 80 characters X 6
ERROR: "foo * bar" should be "foo *bar"
ERROR: spaces required around that '=' (ctx:VxO)
ERROR: space required before that '-' (ctx:OxV)
WARNING: suspect code indent for conditional statements (8, 12)
ERROR: spaces required around that '=' (ctx:VxV)
ERROR: do not initialise statics to 0 or NULL
ERROR: space prohibited after that open parenthesis '(' X 2
ERROR: space prohibited before that close parenthesis ')' X 2
ERROR: trailing statements should be on next line
ERROR: return is not a function, parentheses are not required
Also use pr_debug and pr_warning where possible.
arch/x86/kernel/cpu/mtrr/generic.o:
text data bss dec hex filename
5652 77 4224 9953 26e1 generic.o.before
5652 77 4220 9949 26dd generic.o.after
The md5 changed:
b34d6c045f06daa4ed092b90cc760e8f generic.o.before.asm
a490c6251cfd8442fbffecc0e09a573d generic.o.after.asm
Because mtrr_state moved from data to bss, changing its
offsets - and also because __LINE__ numbers changed.
Suggested-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090703164225.GA21447@elte.hu>
[ Further cleanups to make the code more consistent ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Fix trivial style problems:
WARNING: Use #include <linux/io.h> instead of <asm/io.h>
WARNING: line over 80 characters
ERROR: do not initialise statics to 0 or NULL
ERROR: space prohibited after that open parenthesis '(' X 2
ERROR: space prohibited before that close parenthesis ')' X 2
ERROR: trailing whitespace X 2
ERROR: trailing statements should be on next line
ERROR: do not use C99 // comments X 2
arch/x86/kernel/cpu/mtrr/cyrix.o:
text data bss dec hex filename
1637 32 8 1677 68d cyrix.o.before
1637 32 8 1677 68d cyrix.o.after
md5:
6f52abd06905be3f4cabb5239f9b0ff0 cyrix.o.before.asm
6f52abd06905be3f4cabb5239f9b0ff0 cyrix.o.after.asm
Suggested-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090703164225.GA21447@elte.hu>
[ Made the code more consistent ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Fix trivial style problems:
WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
WARNING: Use #include <linux/kvm_para.h> instead of <asm/kvm_para.h>
Also, nr_mtrr_spare_reg should be unsigned long.
arch/x86/kernel/cpu/mtrr/cleanup.o:
text data bss dec hex filename
6241 8992 2056 17289 4389 cleanup.o.before
6241 8992 2056 17289 4389 cleanup.o.after
The md5 has changed:
1a7a27513aef1825236daf29110fe657 cleanup.o.before.asm
bcea358efa2532b6020e338e158447af cleanup.o.after.asm
Because a WARN_ON()'s __LINE__ value changed by 3 lines.
Suggested-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090703164225.GA21447@elte.hu>
[ Did lots of other cleanups to make the code look more consistent. ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Fix trivial style problems :
ERROR: trailing whitespace
WARNING: line over 80 characters
ERROR: do not use C99 // comments
arch/x86/kernel/cpu/mtrr/amd.o:
text data bss dec hex filename
501 32 0 533 215 amd.o.before
501 32 0 533 215 amd.o.after
md5:
62f795eb840ee2d17b03df89e789e76c amd.o.before.asm
62f795eb840ee2d17b03df89e789e76c amd.o.after.asm
Suggested-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090703164225.GA21447@elte.hu>
[ Also restructured comments to be standard, removed stray return,
converted function description to DocBook style, etc. ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
* git://git.infradead.org/iommu-2.6: (38 commits)
intel-iommu: Don't keep freeing page zero in dma_pte_free_pagetable()
intel-iommu: Introduce first_pte_in_page() to simplify PTE-setting loops
intel-iommu: Use cmpxchg64_local() for setting PTEs
intel-iommu: Warn about unmatched unmap requests
intel-iommu: Kill superfluous mapping_lock
intel-iommu: Ensure that PTE writes are 64-bit atomic, even on i386
intel-iommu: Make iommu=pt work on i386 too
intel-iommu: Performance improvement for dma_pte_free_pagetable()
intel-iommu: Don't free too much in dma_pte_free_pagetable()
intel-iommu: dump mappings but don't die on pte already set
intel-iommu: Combine domain_pfn_mapping() and domain_sg_mapping()
intel-iommu: Introduce domain_sg_mapping() to speed up intel_map_sg()
intel-iommu: Simplify __intel_alloc_iova()
intel-iommu: Performance improvement for domain_pfn_mapping()
intel-iommu: Performance improvement for dma_pte_clear_range()
intel-iommu: Clean up iommu_domain_identity_map()
intel-iommu: Remove last use of PHYSICAL_PAGE_MASK, for reserving PCI BARs
intel-iommu: Make iommu_flush_iotlb_psi() take pfn as argument
intel-iommu: Change aligned_size() to aligned_nrpages()
intel-iommu: Clean up intel_map_sg(), remove domain_page_mapping()
...
fix hang with HIGHMEM_64G and 32bit resource. According to hpa and
Linus, use (resource_size_t)-1 to fend off big ranges.
Analyzed by hpa
Reported-and-tested-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
These macros had two bugs:
- the type of the mask was not correctly expanded to the full size of
the argument being expanded, resulting in possible loss of high bits
when mixing types.
- the alignment argument was evaluated twice, despite the macro looking
like a fancy function (but it really does need to be a macro, since
it works on arbitrary integer types)
Noticed by Peter Anvin, and with a fix that is a modification of his
suggestion (bug noticed by Yinghai Lu).
Cc: Peter Anvin <hpa@zytor.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add basic performance counter support to the FRV arch.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
sh: LCDC dcache flush for deferred io
sh: Fix compiler error and include the definition of IS_ERR_VALUE
sh: re-add LCDC fbdev support to the Migo-R defconfig
sh: fix se7724 ceu names
sh: ms7724se: Enable sh_eth in defconfig.
arch/sh/boards/mach-se/7206/io.c: Remove unnecessary semicolons
sh: ms7724se: Add sh_eth support
nommu: provide follow_pfn().
sh: Kill off unused DEBUG_BOOTMEM symbol.
perf_counter tools: add cpu_relax()/rmb() definitions for sh.
sh64: Hook up page fault events for software perf counters.
sh: Hook up page fault events for software perf counters.
sh: make set_perf_counter_pending() static inline.
clocksource: sh_tmu: Make undefined TCOR behaviour less undefined.
When arch/sh/include/asm/syscall_32.h is included from a file that
doesn't also include linux/err.h the following error is produced,
In file included from /home/matt/src/kernels/sh-2.6/arch/sh/include/asm/syscall.h:5,
from kernel/trace/trace_syscalls.c:3:
/home/matt/src/kernels/sh-2.6/arch/sh/include/asm/syscall_32.h: In function 'syscall_get_error':
/home/matt/src/kernels/sh-2.6/arch/sh/include/asm/syscall_32.h:28: error: implicit declaration of function 'IS_ERR_VALUE'
make[2]: *** [kernel/trace/trace_syscalls.o] Error 1
make[1]: *** [kernel/trace] Error 2
make: *** [kernel] Error 2
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
We can run a 32-bit kernel on boxes with an IOMMU, so we need
pci_unmap_addr() etc. to work -- without it, drivers will leak mappings.
To be honest, this whole thing looks like it's more pain than it's
worth; I'm half inclined to remove the no-op #else case altogether.
But this is the minimal fix, which just does the right thing if
CONFIG_DMAR is set.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org [ for 2.6.30 ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Use "ceu0" and "ceu1" as CEU names instead of "ceu".
This fixes "memchunk" kernel command line selection
on the solution engine 7724 board.
With this patch applied use "memchunk.ceu0=1m" or
"memchunk.ceu1=1m" on kernel command line to override
physically memory size to one meg for CEU0 or CEU1.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (47 commits)
perf report: Add --symbols parameter
perf report: Add --comms parameter
perf report: Add --dsos parameter
perf_counter tools: Adjust only prelinked symbol's addresses
perf_counter: Provide a way to enable counters on exec
perf_counter tools: Reduce perf stat measurement overhead/skew
perf stat: Use percentages for scaling output
perf_counter, x86: Update x86_pmu after WARN()
perf stat: Micro-optimize the code: memcpy is only required if no event is selected and !null_run
perf stat: Improve output
perf stat: Fix multi-run stats
perf stat: Add -n/--null option to run without counters
perf_counter tools: Remove dead code
perf_counter: Complete counter swap
perf report: Print sorted callchains per histogram entries
perf_counter tools: Prepare a small callchain framework
perf record: Fix unhandled io return value
perf_counter tools: Add alias for 'l1d' and 'l1i'
perf-report: Add bare minimum PERF_EVENT_READ parsing
perf-report: Add modes for inherited stats and no-samples
...
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
Add Fenghua Yu as temporary co-maintainer for ia64
[IA64] address compiler warnings perfmon.c/salinfo.c
[IA64] Remove unnecessary semicolons
[IA64] sprintf should not be used with same source & destination address
Wire up new syscalls rt_tgsigqueueinfo and perf_counter_open.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wire up new syscalls rt_tgsigqueueinfo and perf_counter_open.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nathan reported that
| commit 73d60b7f74
| Author: Yinghai Lu <yinghai@kernel.org>
| Date: Tue Jun 16 15:33:00 2009 -0700
|
| page-allocator: clear N_HIGH_MEMORY map before we set it again
|
| SRAT tables may contains nodes of very small size. The arch code may
| decide to not activate such a node. However, currently the early boot
| code sets N_HIGH_MEMORY for such nodes. These nodes therefore seem to be
| active although these nodes have no present pages.
|
| For 64bit N_HIGH_MEMORY == N_NORMAL_MEMORY, so that works for 64 bit too
unintentionally and incorrectly clears the cpuset.mems cgroup attribute on
an i386 kvm guest, meaning that cpuset.mems can not be used.
Fix this by only clearing node_states[N_NORMAL_MEMORY] for 64bit only.
and need to do save/restore for that in find_zone_movable_pfn
Reported-by: Nathan Lynch <ntl@pobox.com>
Tested-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>,
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
alpha percpu access requires custom SHIFT_PERCPU_PTR() definition for
modules to work around addressing range limitation. This is done via
generating inline assembly using C preprocessing which forces the
assembler to generate external reference. This happens behind the
compiler's back and makes the compiler think that static percpu variables
in modules are unused.
This used to be worked around by using __unused attribute for percpu
variables which prevent the compiler from omitting the variable; however,
recent declare/definition attribute unification change broke this as
__used can't be used for declaration. Also, in the process,
PER_CPU_ATTRIBUTES definition in alpha percpu.h got broken.
This patch adds PER_CPU_DEF_ATTRIBUTES which is only used for definitions
and make alpha use it to add __used for percpu variables in modules. This
also fixes the PER_CPU_ATTRIBUTES double definition bug.
Signed-off-by: Tejun Heo <tj@kernel.org>
Tested-by: maximilian attems <max@stro.at>
Acked-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
perfmon.c has a dubious cast directly from "int" to "void *". Add
an intermediate cast to "long" to keep gcc happy.
salinfo.c uses "down_trylock()" in a highly creative way (explained
in the comments in the file) ... but it does kick out this warning:
arch/ia64/kernel/salinfo.c:195: warning: ignoring return value of 'down_trylock'
which people occasionally try to "fix" in ways that do not work. Use some
casts to keep gcc quiet.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This happens to work at the moment but isn't a good idea so fix it the
simple way.
Resolves-bug: http://bugzilla.kernel.org/show_bug.cgi?id=13576
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
Revert "x86: cap iomem_resource to addressable physical memory"
There's no need for the GFX workaround now we have 'iommu=pt' for the
cases where people really care about performance. There's no need to
have a special case for just one type of device.
This also speeds up the iommu=pt path and reduces memory usage by
setting up the si_domain _once_ and then using it for all devices,
rather than giving each device its own private page tables.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This adds input keyboard gpio support on at91sam9g20ek board.
It adds button 3 and 4.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The print out should read the value before changing the value.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4A487017.4090007@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
* 'kvm-updates/2.6.31' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: shut up uninit compiler warning in paging_tmpl.h
KVM: Ignore reads to K7 EVNTSEL MSRs
KVM: VMX: Handle vmx instruction vmexits
KVM: s390: Allow stfle instruction in the guest
KVM: kvm/x86_emulate.c toggle_interruptibility() should be static
KVM: ia64: fix ia64 build due to missing kallsyms_lookup() and double export
KVM: protect concurrent make_all_cpus_request
KVM: MMU: Allow 4K ptes with bit 7 (PAT) set
KVM: Fix dirty bit tracking for slots with large pages
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, delay: tsc based udelay should have rdtsc_barrier
x86, setup: correct include file in <asm/boot.h>
x86, setup: Fix typo "CONFIG_x86_64" in <asm/boot.h>
x86, mce: percpu mcheck_timer should be pinned
x86: Add sysctl to allow panic on IOCK NMI error
x86: Fix uv bau sending buffer initialization
x86, mce: Fix mce resume on 32bit
x86: Move init_gbpages() to setup_arch()
x86: ensure percpu lpage doesn't consume too much vmalloc space
x86: implement percpu_alloc kernel parameter
x86: fix pageattr handling for lpage percpu allocator and re-enable it
x86: reorganize cpa_process_alias()
x86: prepare setup_pcpu_lpage() for pageattr fix
x86: rename remap percpu first chunk allocator to lpage
x86: fix duplicate free in setup_pcpu_remap() failure path
percpu: fix too lazy vunmap cache flushing
x86: Set cpu_llc_id on AMD CPUs
Dixes compilation warning:
CC arch/x86/kernel/io_delay.o
arch/x86/kvm/paging_tmpl.h: In function ‘paging64_fetch’:
arch/x86/kvm/paging_tmpl.h:279: warning: ‘sptep’ may be used uninitialized in this function
arch/x86/kvm/paging_tmpl.h: In function ‘paging32_fetch’:
arch/x86/kvm/paging_tmpl.h:279: warning: ‘sptep’ may be used uninitialized in this function
warning is bogus (always have a least one level), but need to shut the compiler
up.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
In commit 7fe29e0faa we ignored the
reads to the P6 EVNTSEL MSRs. That fixed crashes on Intel machines.
Ignore the reads to K7 EVNTSEL MSRs as well to fix this on AMD
hosts.
This fixes Kaspersky antivirus crashing Windows guests on AMD hosts.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
IF a guest tries to use vmx instructions, inject a #UD to let it know the
instruction is not implemented, rather than crashing.
This prevents guest userspace from crashing the guest kernel.
Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>
H. Peter Anvin