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20b279ddb38ca42f8863cec07b4d45ec24589f13
linux/arch/x86/kernel
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Peter Zijlstra 20b279ddb3 perf: Require exclude_guest to use PEBS - kernel side enforcement 
Intel PEBS in VT-x context uses the DS address as a guest linear
address, even though its programmed by the host as a host linear
address. This either results in guest memory corruption and or the
hardware faulting and 'crashing' the virtual machine.  Therefore we have
to disable PEBS on VT-x enter and re-enable on VT-x exit, enforcing a
strict exclude_guest.

This patch enforces exclude_guest kernel side.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Avi Kivity <avi@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Robert Richter <robert.richter@amd.com>
Link: http://lkml.kernel.org/r/1347569955-54626-3-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-10-16 12:43:58 -03:00
..
acpi
x86/api: Rename mp_register_lapic in a comment
2012-09-26 13:29:36 +02:00
apic
arch/x86: Remove unecessary semicolons
2012-09-19 17:32:48 +02:00
cpu
perf: Require exclude_guest to use PEBS - kernel side enforcement
2012-10-16 12:43:58 -03:00
.gitignore
…
alternative.c
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-10-01 10:47:45 -07:00
amd_gart_64.c
X86 & IA64: adapt for dma_map_ops changes
2012-03-28 16:36:31 +02:00
amd_nb.c
Merge branch 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-07-22 16:07:45 -07:00
apb_timer.c
Merge branch 'timers-clocksource-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-07-23 10:34:47 -07:00
aperture_64.c
x86/gart: Fix kmemleak warning
2012-06-06 11:58:38 +02:00
apm_32.c
x86/debug: Add KERN_<LEVEL> to bare printks, convert printks to pr_<level>
2012-06-06 09:17:22 +02:00
asm-offsets_32.c
x86: Generate system call tables and unistd_*.h from tables
2011-11-17 13:35:37 -08:00
asm-offsets_64.c
x32: If configured, add x32 system calls to system call tables
2012-02-20 12:52:06 -08:00
asm-offsets.c
x86, efi: EFI boot stub support
2011-12-12 14:26:10 -08:00
audit_64.c
…
bootflag.c
…
check.c
x86: kernel/check.c simple_strtoul cleanup
2012-05-15 15:36:41 -07:00
cpuid.c
Use get_online_cpus to avoid races involving CPU hotplug
2012-09-23 07:43:56 -07:00
crash_dump_32.c
x86: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:15 +08:00
crash_dump_64.c
…
crash.c
x86, nmi: Wire up NMI handlers to new routines
2011-10-10 06:56:57 +02:00
devicetree.c
x86: dt: Use linear irq domain for ioapic(s)
2012-08-21 22:16:57 +02:00
doublefault_32.c
…
dumpstack_32.c
x86: Move call to print_modules() out of show_regs()
2012-06-20 14:33:48 +02:00
dumpstack_64.c
x86: Move call to print_modules() out of show_regs()
2012-06-20 14:33:48 +02:00
dumpstack.c
x86: Move call to print_modules() out of show_regs()
2012-06-20 14:33:48 +02:00
e820.c
firmware_map: make firmware_map_add_early() argument consistent with firmware_map_add_hotplug()
2012-07-30 17:25:17 -07:00
early_printk.c
Revert "x86/early_printk: Replace obsolete simple_strtoul() usage with kstrtoint()"
2012-07-22 15:47:52 +02:00
early-quirks.c
…
entry_32.S
ftrace/x86: Adjust x86 regs.ip as like as x86-64
2012-09-13 22:52:09 -04:00
entry_64.S
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-10-01 10:46:27 -07:00
ftrace.c
ftrace/x86: Add save_regs for i386 function calls
2012-07-19 13:20:37 -04:00
head32.c
x86, realmode: Move ACPI wakeup to unified realmode code
2012-05-08 11:46:05 -07:00
head64.c
x86, realmode: Move ACPI wakeup to unified realmode code
2012-05-08 11:46:05 -07:00
head_32.S
Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-29 20:14:53 -07:00
head_64.S
Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-29 20:14:53 -07:00
head.c
memblock, x86: Replace memblock_x86_reserve/free_range() with generic ones
2011-07-14 11:47:53 -07:00
hpet.c
x86: hpet: Fix copy-and-paste mistake in earlier change
2012-05-25 15:32:29 +02:00
hw_breakpoint.c
…
i386_ksyms_32.c
…
i387.c
x86, kvm: fix kvm's usage of kernel_fpu_begin/end()
2012-09-21 16:59:04 -07:00
i8237.c
…
i8253.c
x86: Use common i8253 clockevent
2011-07-01 10:37:14 +02:00
i8259.c
x86/irq/i8259: Fix incorrect comment
2012-08-22 09:34:24 +02:00
io_delay.c
…
ioport.c
…
irq_32.c
x86: Use common threadinfo allocator
2012-05-08 14:08:44 +02:00
irq_64.c
x86: Add stack top margin for stack overflow checking
2011-12-07 09:27:11 +01:00
irq_work.c
…
irq.c
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-10-01 11:13:33 -07:00
irqinit.c
x86/tlb: replace INVALIDATE_TLB_VECTOR by CALL_FUNCTION_VECTOR
2012-06-27 19:29:13 -07:00
jump_label.c
jump_label, x86: Fix section mismatch
2011-12-06 20:41:02 +01:00
kdebugfs.c
arch/x86/kernel/kdebugfs.c: Ensure a consistent return value in error case
2012-07-26 15:07:20 +02:00
kgdb.c
x86: Fix kernel-doc warnings
2012-06-18 10:53:18 +02:00
kprobes-common.h
x86/kprobes: Split out optprobe related code to kprobes-opt.c
2012-03-06 09:49:49 +01:00
kprobes-opt.c
x86/kprobes: Split out optprobe related code to kprobes-opt.c
2012-03-06 09:49:49 +01:00
kprobes.c
kprobes/x86: Move skip_singlestep up
2012-09-20 14:48:16 +02:00
kvm.c
KVM guest: switch to apic_set_eoi_write, apic_write
2012-07-16 12:51:44 +03:00
kvmclock.c
x86: kvmclock: remove check_and_clear_guest_paused warning
2012-06-11 23:18:33 -03:00
ldt.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
machine_kexec_32.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
machine_kexec_64.c
…
Makefile
perf: Unified API to record selective sets of arch registers
2012-08-10 11:21:37 -03:00
microcode_amd.c
x86, microcode, AMD: Fix use after free in free_cache()
2012-09-19 18:06:25 +02:00
microcode_core.c
Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-10-01 11:15:17 -07:00
microcode_intel.c
x86, microcode: Add a refresh firmware flag to ->request_microcode_fw
2012-08-22 16:15:58 -07:00
mmconf-fam10h_64.c
…
module.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-07-24 13:34:56 -07:00
mpparse.c
Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-29 20:14:53 -07:00
msr.c
Use get_online_cpus to avoid races involving CPU hotplug
2012-09-23 07:43:56 -07:00
nmi_selftest.c
x86/nmi: Clean up register_nmi_handler() usage
2012-06-20 14:23:17 +02:00
nmi.c
x86: Save cr2 in NMI in case NMIs take a page fault (for i386)
2012-06-08 18:51:12 -04:00
paravirt_patch_32.c
…
paravirt_patch_64.c
…
paravirt-spinlocks.c
…
paravirt.c
x86, pvops: Remove hooks for {rd,wr}msr_safe_regs
2012-06-07 11:41:08 -07:00
pci-calgary_64.c
x86/debug: Add KERN_<LEVEL> to bare printks, convert printks to pr_<level>
2012-06-06 09:17:22 +02:00
pci-dma.c
iommu: Remove group_mf
2012-06-25 13:48:30 +02:00
pci-iommu_table.c
…
pci-nommu.c
X86: integrate CMA with DMA-mapping subsystem
2012-05-21 15:09:38 +02:00
pci-swiotlb.c
X86 & IA64: adapt for dma_map_ops changes
2012-03-28 16:36:31 +02:00
pcspeaker.c
…
perf_regs.c
perf: Fix off by one test in perf_reg_value()
2012-09-19 17:08:40 +02:00
probe_roms.c
x86/pci/probe_roms: Add missing __iomem annotation to pci_map_biosrom()
2012-09-05 10:52:25 +02:00
process_32.c
x86, fpu: use non-lazy fpu restore for processors supporting xsave
2012-09-18 15:52:11 -07:00
process_64.c
x86, fpu: use non-lazy fpu restore for processors supporting xsave
2012-09-18 15:52:11 -07:00
process.c
x86, fpu: decouple non-lazy/eager fpu restore from xsave
2012-09-18 15:52:22 -07:00
ptrace.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-10-01 11:10:52 -07:00
pvclock.c
…
quirks.c
x86/PCI: move fixup hooks from __init to __devinit
2012-06-12 09:10:54 -06:00
reboot_fixups_32.c
…
reboot.c
Merge branch 'x86-reboot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-07-22 12:25:47 -07:00
relocate_kernel_32.S
kexec, x86: Fix incorrect jump back address if not preserving context
2011-07-21 11:19:28 +02:00
relocate_kernel_64.S
kexec, x86: Fix incorrect jump back address if not preserving context
2011-07-21 11:19:28 +02:00
resource.c
…
rtc.c
x86/rtc, mrst: Don't register a platform RTC device for for Intel MID platforms
2011-12-05 17:09:21 +01:00
setup_percpu.c
x86: Add read_mostly declaration/definition to variables from smp.h
2012-06-14 12:42:11 +02:00
setup.c
x86: xen: Cleanup and remove x86_init.paging.pagetable_setup_done()
2012-09-12 15:33:06 +02:00
signal.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-10-01 11:10:52 -07:00
smp.c
x86/reboot: Update nonmi_ipi parameter
2012-05-14 11:49:38 +02:00
smpboot.c
x86/smp: Don't ever patch back to UP if we unplug cpus
2012-08-23 10:45:13 +02:00
stacktrace.c
x86: Swap save_stack_trace_regs parameters
2011-06-14 22:48:51 -04:00
step.c
uprobes/x86: Do not (ab)use TIF_SINGLESTEP/user_*_single_step() for single-stepping
2012-09-15 17:37:30 +02:00
sys_i386_32.c
…
sys_x86_64.c
Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-03-29 18:12:23 -07:00
syscall_32.c
x86, syscall: Re-fix typo in comment
2011-11-18 16:25:07 -08:00
syscall_64.c
x32: If configured, add x32 system calls to system call tables
2012-02-20 12:52:06 -08:00
tboot.c
x86, realmode: fixes compilation issue in tboot.c
2012-05-08 15:04:27 -07:00
tce_64.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
test_nx.c
…
test_rodata.c
x86, extable: Remove open-coded exception table entries in arch/x86/kernel/test_rodata.c
2012-04-20 13:51:38 -07:00
time.c
MCA: delete all remaining traces of microchannel bus support.
2012-05-17 19:06:13 -04:00
tls.c
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-03-29 14:28:26 -07:00
tls.h
…
topology.c
x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE
2011-10-31 19:30:35 -04:00
traps.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-10-01 11:10:52 -07:00
tsc_sync.c
x86/tsc: Reduce the TSC sync check time for core-siblings
2012-02-22 11:49:40 +01:00
tsc.c
x86/debug: Add KERN_<LEVEL> to bare printks, convert printks to pr_<level>
2012-06-06 09:17:22 +02:00
uprobes.c
uprobes/x86: Fix arch_uprobe_disable_step() && UTASK_SSTEP_TRAPPED interaction
2012-09-15 17:37:32 +02:00
verify_cpu.S
…
vm86_32.c
x86/debug: Add KERN_<LEVEL> to bare printks, convert printks to pr_<level>
2012-06-06 09:17:22 +02:00
vmlinux.lds.S
x86, realmode: Move ACPI wakeup to unified realmode code
2012-05-08 11:46:05 -07:00
vsmp_64.c
x86/apic/x2apic: Limit the vector reservation to the user specified mask
2012-07-06 11:00:22 +02:00
vsyscall_64.c
Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-07-22 12:04:44 -07:00
vsyscall_emu_64.S
x86-64: Rework vsyscall emulation and add vsyscall= parameter
2011-08-10 19:26:46 -05:00
vsyscall_trace.h
x86-64: Add vsyscall:emulate_vsyscall trace event
2011-08-04 16:13:53 -07:00
x86_init.c
x86: xen: Cleanup and remove x86_init.paging.pagetable_setup_done()
2012-09-12 15:33:06 +02:00
x8664_ksyms_64.c
ftrace/x86: Add support for -mfentry to x86_64
2012-08-23 11:26:36 -04:00
xsave.c
x86, fpu: make eagerfpu= boot param tri-state
2012-09-18 15:52:24 -07:00