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48c7a2509f
linux/arch/x86/include/asm
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Borislav Petkov 48c7a2509f x86/alternatives: Make JMPs more robust 
Up until now we had to pay attention to relative JMPs in alternatives
about how their relative offset gets computed so that the jump target
is still correct. Or, as it is the case for near CALLs (opcode e8), we
still have to go and readjust the offset at patching time.

What is more, the static_cpu_has_safe() facility had to forcefully
generate 5-byte JMPs since we couldn't rely on the compiler to generate
properly sized ones so we had to force the longest ones. Worse than
that, sometimes it would generate a replacement JMP which is longer than
the original one, thus overwriting the beginning of the next instruction
at patching time.

So, in order to alleviate all that and make using JMPs more
straight-forward we go and pad the original instruction in an
alternative block with NOPs at build time, should the replacement(s) be
longer. This way, alternatives users shouldn't pay special attention
so that original and replacement instruction sizes are fine but the
assembler would simply add padding where needed and not do anything
otherwise.

As a second aspect, we go and recompute JMPs at patching time so that we
can try to make 5-byte JMPs into two-byte ones if possible. If not, we
still have to recompute the offsets as the replacement JMP gets put far
away in the .altinstr_replacement section leading to a wrong offset if
copied verbatim.

For example, on a locally generated kernel image

  old insn VA: 0xffffffff810014bd, CPU feat: X86_FEATURE_ALWAYS, size: 2
  __switch_to:
   ffffffff810014bd:      eb 21                   jmp ffffffff810014e0
  repl insn: size: 5
  ffffffff81d0b23c:       e9 b1 62 2f ff          jmpq ffffffff810014f2

gets corrected to a 2-byte JMP:

  apply_alternatives: feat: 3*32+21, old: (ffffffff810014bd, len: 2), repl: (ffffffff81d0b23c, len: 5)
  alt_insn: e9 b1 62 2f ff
  recompute_jumps: next_rip: ffffffff81d0b241, tgt_rip: ffffffff810014f2, new_displ: 0x00000033, ret len: 2
  converted to: eb 33 90 90 90

and a 5-byte JMP:

  old insn VA: 0xffffffff81001516, CPU feat: X86_FEATURE_ALWAYS, size: 2
  __switch_to:
   ffffffff81001516:      eb 30                   jmp ffffffff81001548
  repl insn: size: 5
   ffffffff81d0b241:      e9 10 63 2f ff          jmpq ffffffff81001556

gets shortened into a two-byte one:

  apply_alternatives: feat: 3*32+21, old: (ffffffff81001516, len: 2), repl: (ffffffff81d0b241, len: 5)
  alt_insn: e9 10 63 2f ff
  recompute_jumps: next_rip: ffffffff81d0b246, tgt_rip: ffffffff81001556, new_displ: 0x0000003e, ret len: 2
  converted to: eb 3e 90 90 90

... and so on.

This leads to a net win of around

40ish replacements * 3 bytes savings =~ 120 bytes of I$

on an AMD guest which means some savings of precious instruction cache
bandwidth. The padding to the shorter 2-byte JMPs are single-byte NOPs
which on smart microarchitectures means discarding NOPs at decode time
and thus freeing up execution bandwidth.

Signed-off-by: Borislav Petkov <bp@suse.de>
2015-02-23 13:44:11 +01:00
..
crypto crypto: move x86 to the generic version of ablk_helper 2013-09-24 06:02:24 +10:00
numachip
trace ftrace, perf: Avoid infinite event generation loop 2013-11-19 16:57:40 +01:00
uv x86: UV BAU: Increase maximum CPUs per socket/hub 2014-11-03 13:49:24 +01:00
xen xen: remove scratch frames for ballooned pages and m2p override 2015-01-28 14:03:10 +00:00
a.out-core.h
acenv.h ACPICA: Linux: Add support to exclude <asm/acenv.h> inclusion. 2014-07-23 01:10:44 +02:00
acpi.h x86/xen: Override ACPI IRQ management callback __acpi_unregister_gsi 2015-01-20 11:44:41 +01:00
agp.h
alternative-asm.h x86/alternatives: Add instruction padding 2015-02-23 13:44:00 +01:00
alternative.h x86/alternatives: Add instruction padding 2015-02-23 13:44:00 +01:00
amd_nb.h x86/AMD/NB: Fix amd_set_subcaches() parameter type 2014-01-25 08:50:09 +01:00
apb_timer.h
apic_flat_64.h
apic.h x86/apic: Fix the devicetree build in certain configs 2015-02-18 22:30:19 +01:00
apicdef.h
apm.h
arch_hweight.h
archrandom.h random: Add arch_has_random[_seed]() 2014-03-19 22:24:08 -04:00
asm-offsets.h
asm.h kprobes: Introduce NOKPROBE_SYMBOL() macro to maintain kprobes blacklist 2014-04-24 10:02:56 +02:00
atomic64_32.h
atomic64_64.h locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read() 2014-10-03 06:06:23 +02:00
atomic.h locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read() 2014-10-03 06:06:23 +02:00
barrier.h arch: Add lightweight memory barriers dma_rmb() and dma_wmb() 2014-12-11 21:15:06 -05:00
bios_ebda.h
bitops.h Make ARCH_HAS_FAST_MULTIPLIER a real config variable 2014-09-13 11:14:53 -07:00
boot.h
bootparam_utils.h
bug.h x86: always define BUG() and HAVE_ARCH_BUG, even with !CONFIG_BUG 2014-04-07 16:36:10 -07:00
bugs.h
cache.h
cacheflush.h x86: mm: Move PAT only functions to mm/pat.c 2014-11-16 18:59:19 +01:00
calgary.h
calling.h x86: entry_64.S: delete unused code 2015-01-13 14:00:33 -08:00
ce4100.h
checksum_32.h x86, smap: Handle csum_partial_copy_*_user() 2013-09-01 14:09:48 -07:00
checksum_64.h net: Change x86_64 add32_with_carry to allow memory operand 2014-05-05 15:26:29 -04:00
checksum.h
clocksource.h x86, vdso: Make vsyscall_gtod_data handling x86 generic 2014-03-18 12:51:52 -07:00
cmdline.h x86, boot: Carve out early cmdline parsing function 2014-05-20 20:21:24 -07:00
cmpxchg_32.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
cmpxchg_64.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
cmpxchg.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
compat.h
context_tracking.h
cpu_device_id.h
cpu.h
cpufeature.h x86/alternatives: Make JMPs more robust 2015-02-23 13:44:11 +01:00
cpumask.h
crash.h kexec: support for kexec on panic using new system call 2014-08-08 15:57:33 -07:00
current.h
debugreg.h perf/x86/amd: AMD support for bp_len > HW_BREAKPOINT_LEN_8 2014-12-03 15:14:26 +01:00
delay.h
desc_defs.h
desc.h x86, tls: Interpret an all-zero struct user_desc as "no segment" 2015-01-22 21:45:07 +01:00
device.h
disabled-features.h x86, mpx: Add MPX to disabled features 2014-11-18 00:58:53 +01:00
div64.h
dma-mapping.h
dma.h x86/mm: Fix zone ranges boot printout 2014-12-11 11:35:02 +01:00
dmi.h firmware/dmi_scan: generalize for use by other archs 2014-01-23 16:36:57 -08:00
dwarf2.h
e820.h x86: avoid remapping data in parse_setup_data() 2013-08-13 23:29:19 -07:00
edac.h
efi.h efi/x86: Move x86 back to libstub 2014-11-11 22:23:11 +00:00
elf.h x86: Reject x32 executables if x32 ABI not supported 2014-10-08 11:17:42 +02:00
emergency-restart.h
entry_arch.h
espfix.h x86, espfix: Fix broken header guard 2014-05-02 11:34:17 -07:00
exec.h
fb.h x86: Use new cache mode type in include/asm/fb.h 2014-11-16 11:04:24 +01:00
fixmap.h Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-10 14:24:20 -08:00
floppy.h x86: Remove deprecated IRQF_DISABLED 2014-03-04 21:47:51 +01:00
fpu-internal.h x86/fpu: Use a symbolic name for asm operand 2014-12-23 10:41:12 +01:00
frame.h
ftrace.h ftrace/x86: Move MCOUNT_SAVE_FRAME out of header file 2014-12-01 14:07:16 -05:00
futex.h x86: replace futex_atomic_cmpxchg_inatomic() with user_atomic_cmpxchg_inatomic 2013-12-16 09:08:13 -08:00
gart.h
genapic.h
geode.h
gpio.h
hardirq.h x86, irq, trivial: Minor improvements of IRQ related code 2014-06-21 23:05:41 +02:00
highmem.h x86: mm: Re-use the early_ioremap fixed area 2014-11-03 13:40:44 +01:00
hpet.h x86/hpet: Make boot_hpet_disable extern 2014-05-08 08:15:34 +02:00
hugetlb.h x86, mm, hugetlb: Add missing TLB page invalidation for hugetlb_cow() 2014-05-13 16:34:09 -07:00
hw_breakpoint.h perf/x86/amd: AMD support for bp_len > HW_BREAKPOINT_LEN_8 2014-12-03 15:14:26 +01:00
hw_irq.h x86, irq: Move IOAPIC related declarations from hw_irq.h into io_apic.h 2014-12-16 14:08:17 +01:00
hypertransport.h
hypervisor.h
i387.h x86, fpu: Fix math_state_restore() race with kernel_fpu_begin() 2015-01-20 13:53:07 +01:00
i8259.h x86, irq: Count legacy IRQs by legacy_pic->nr_legacy_irqs instead of NR_IRQS_LEGACY 2014-06-21 23:05:42 +02:00
ia32_unistd.h
ia32.h
idle.h
imr.h x86/intel/quark: Add Isolated Memory Regions for Quark X1000 2015-02-18 23:22:47 +01:00
inat_types.h
inat.h
init.h
insn.h x86: Remove arbitrary instruction size limit in instruction decoder 2014-11-18 00:58:52 +01:00
inst.h
intel_mid_vrtc.h intel_mid: Renamed *mrst* to *intel_mid* 2013-10-17 16:40:36 -07:00
intel_scu_ipc.h
intel-mid.h x86, mrst: remove Moorestown specific serial drivers 2015-02-02 10:11:24 -08:00
io_apic.h x86/ioapic: Provide stub functions for IOAPIC%3Dn 2015-01-22 15:10:55 +01:00
io.h Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-10 13:59:34 -08:00
iomap.h
iommu_table.h
iommu.h
iosf_mbi.h x86, iosf: Added Quark MBI identifiers 2014-05-09 14:57:08 -07:00
ipi.h
irq_regs.h
irq_remapping.h iommu/irq_remapping: Kill function irq_remapping_supported() and related code 2015-01-15 11:24:23 +01:00
irq_vectors.h x86: Avoid building unused IRQ entry stubs 2014-12-16 14:08:14 +01:00
irq_work.h x86: Tell irq work about self IPI support 2014-09-13 18:38:29 +02:00
irq.h nmi: provide the option to issue an NMI back trace to every cpu but current 2014-06-23 16:47:44 -07:00
irqflags.h x86_64/entry/xen: Do not invoke espfix64 on Xen 2014-07-28 15:25:40 -07:00
ist.h
jump_label.h compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
kasan.h x86_64: add KASan support 2015-02-13 21:21:41 -08:00
kbdleds.h
Kbuild x86: use generic dma-contiguous.h 2014-09-22 13:35:52 +02:00
kdebug.h x86/dumpstack: Fix printk_address for direct addresses 2013-11-12 21:06:06 +01:00
kexec-bzimage64.h kexec-bzImage64: support for loading bzImage using 64bit entry 2014-08-08 15:57:33 -07:00
kexec.h kexec: support for kexec on panic using new system call 2014-08-08 15:57:33 -07:00
kgdb.h
kmap_types.h
kmemcheck.h
kprobes.h kprobes/x86: Remove stale ARCH_SUPPORTS_KPROBES_ON_FTRACE define 2014-10-17 07:18:34 +02:00
kvm_emulate.h KVM: x86: IRET emulation does not clear NMI masking 2015-01-26 12:14:42 +01:00
kvm_guest.h
kvm_host.h kvm: add halt_poll_ns module parameter 2015-02-06 13:08:37 +01:00
kvm_para.h x86: kvm: use alternatives for VMCALL vs. VMMCALL if kernel text is read-only 2014-09-24 14:07:57 +02:00
lguest_hcall.h lguest: remove NOTIFY call and eventfd facility. 2015-02-11 16:47:46 +10:30
lguest.h
linkage.h
livepatch.h livepatch: rename config to CONFIG_LIVEPATCH 2015-02-04 11:25:51 +01:00
local64.h
local.h x86, bitops: Correct the assembly constraints to testing bitops 2013-12-04 14:31:28 -08:00
mach_timer.h
mach_traps.h
math_emu.h
mc146818rtc.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
mce.h x86, mce: Get rid of TIF_MCE_NOTIFY and associated mce tricks 2015-01-07 07:47:42 -08:00
microcode_amd.h x86, microcode: Reload microcode on resume 2014-12-06 13:03:03 +01:00
microcode_intel.h x86, microcode: Reload microcode on resume 2014-12-06 13:03:03 +01:00
microcode.h x86, microcode: Reload microcode on resume 2014-12-06 13:03:03 +01:00
misc.h x86: Improve the printout of the SMP bootup CPU table 2013-09-28 10:10:26 +02:00
mmconfig.h
mmu_context.h perf/x86: Add /sys/devices/cpu/rdpmc=2 to allow rdpmc for all tasks 2015-02-04 12:10:49 +01:00
mmu.h perf/x86: Only allow rdpmc if a perf_event is mapped 2015-02-04 12:10:47 +01:00
mmx.h
mmzone_32.h x86, platforms: Remove NUMAQ 2014-02-27 08:07:39 -08:00
mmzone_64.h
mmzone.h
module.h
mpspec_def.h
mpspec.h x86, apic: Remove mps_oem_check callback 2014-07-31 08:05:42 -07:00
mpx.h x86, mpx: Cleanup unused bound tables 2014-11-18 00:58:54 +01:00
mshyperv.h x86: hyperv: Fixup the (brain) damage caused by the irq cleanup 2014-03-05 13:42:14 +01:00
msidef.h
msr.h x86: Add another set of MSR accessor functions 2014-03-13 15:34:45 -07:00
mtrr.h
mutex_32.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
mutex_64.h compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
mutex.h
mwait.h x86, cpufeature: Convert more "features" to bugs 2014-06-18 15:27:04 -07:00
nmi.h x86/nmi: Push duration printk() to irq context 2014-02-09 13:17:22 +01:00
nops.h
numa_32.h
numa.h x86/mm/numa: Drop dead code and rename setup_node_data() to setup_alloc_data() 2014-09-16 08:55:10 +02:00
olpc_ofw.h
olpc.h
page_32_types.h x86_64, traps: Stop using IST for #SS 2014-11-23 13:56:19 -08:00
page_32.h x86/mm: Implement ASLR for hugetlb mappings 2013-11-19 14:24:50 +01:00
page_64_types.h kasan: enable stack instrumentation 2015-02-13 21:21:41 -08:00
page_64.h x86_64,vsyscall: Make vsyscall emulation configurable 2014-11-03 21:44:57 +01:00
page_types.h x86/mm/ASLR: Avoid PAGE_SIZE redefinition for UML subarch 2015-02-20 10:55:32 +01:00
page.h arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area 2014-08-08 15:57:27 -07:00
paravirt_types.h x86, asmlinkage, paravirt: Don't rely on local assembler labels 2014-01-29 22:17:17 -08:00
paravirt.h x86: Store a per-cpu shadow copy of CR4 2015-02-04 12:10:42 +01:00
parport.h
pat.h x86: Enable PAT to use cache mode translation tables 2014-11-16 11:04:26 +01:00
pci_64.h
pci_x86.h x86/PCI: Refine the way to release PCI IRQ resources 2015-02-05 15:09:26 +01:00
pci-direct.h
pci-functions.h
pci.h x86, irq: Move PCI MSI related code from io_apic.c into msi.c 2014-12-16 14:08:17 +01:00
percpu.h x86-64: Use RIP-relative addressing for most per-CPU accesses 2014-11-04 20:43:14 +01:00
perf_event_p4.h percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t 2014-08-28 08:58:57 -04:00
perf_event.h perf/x86/amd/ibs: Update IBS MSRs and feature definitions 2014-11-12 15:12:32 +01:00
pgalloc.h x86, mm: enable split page table lock for PMD level 2013-11-15 09:32:15 +09:00
pgtable_32_types.h x86: mm: Re-use the early_ioremap fixed area 2014-11-03 13:40:44 +01:00
pgtable_32.h x86: Remove set_pmd_pfn 2014-09-01 10:15:31 +02:00
pgtable_64_types.h x86, ptdump: Add section for EFI runtime services 2014-11-11 22:28:57 +00:00
pgtable_64.h mm: remove remaining references to NUMA hinting bits and helpers 2015-02-12 18:54:08 -08:00
pgtable_types.h mm: remove remaining references to NUMA hinting bits and helpers 2015-02-12 18:54:08 -08:00
pgtable-2level_types.h
pgtable-2level.h x86: drop _PAGE_FILE and pte_file()-related helpers 2015-02-10 14:30:33 -08:00
pgtable-3level_types.h
pgtable-3level.h x86: drop _PAGE_FILE and pte_file()-related helpers 2015-02-10 14:30:33 -08:00
pgtable.h x86: pte_protnone() and pmd_protnone() must check entry is not present 2015-02-19 15:04:49 -08:00
platform_sst_audio.h ASoC: Intel: mrfld: Define sst_res_info for acpi 2014-10-27 18:02:38 +00:00
pmc_atom.h x86: pmc_atom: Expose contents of PSS 2015-01-20 12:50:14 +01:00
posix_types.h
preempt.h sched: Kill task_preempt_count() 2014-10-28 10:47:56 +01:00
probe_roms.h
processor-cyrix.h
processor-flags.h
processor.h x86: Clean up cr4 manipulation 2015-02-04 12:10:41 +01:00
prom.h x86, devicetree, irq: Use common mechanism to support irqdomain 2014-06-21 23:05:43 +02:00
proto.h x86, vdso: Move syscall and sysenter setup into kernel/cpu/common.c 2014-05-05 13:18:47 -07:00
ptrace.h x86: Split syscall_trace_enter into two phases 2014-09-08 14:14:03 -07:00
pvclock-abi.h
pvclock.h pvclock: detect watchdog reset at pvclock read 2013-11-06 09:48:43 +02:00
qrwlock.h x86, locking: Use no more OOSTORE nonsense 2014-06-18 18:41:22 +02:00
realmode.h
reboot_fixups.h
reboot.h
required-features.h
resume-trace.h
rio.h
rmwcc.h x86, bitops: Correct the assembly constraints to testing bitops 2013-12-04 14:31:28 -08:00
rtc.h
rwsem.h
seccomp_32.h
seccomp_64.h
seccomp.h
sections.h
segment.h x86/asm: Unify segment selector defines 2014-12-11 11:45:03 +01:00
serial.h x86/tty/serial/8250: Clean up the asm/serial.h include file a bit 2014-09-06 10:20:55 +02:00
setup_arch.h
setup.h x86, espfix: Move espfix definitions into a separate header file 2014-05-01 14:16:15 -07:00
shmparam.h
sigcontext.h
sigframe.h
sighandling.h
signal.h signals: kill sigfindinword() 2014-06-06 16:08:11 -07:00
simd.h crypto: move x86 to the generic version of ablk_helper 2013-09-24 06:02:24 +10:00
smap.h x86/alternatives: Add instruction padding 2015-02-23 13:44:00 +01:00
smp.h x86/core, x86/xen/smp: Use 'die_complete' completion when taking CPU down 2014-11-10 11:16:40 +01:00
sparsemem.h
special_insns.h x86: Store a per-cpu shadow copy of CR4 2015-02-04 12:10:42 +01:00
spinlock_types.h locking/rwlock, x86: Clean up asm/spinlock*.h to remove old rwlock code 2014-09-10 11:46:38 +02:00
spinlock.h x86/spinlocks/paravirt: Fix memory corruption on unlock 2015-02-18 14:53:49 +01:00
sta2x11.h
stackprotector.h
stacktrace.h
string_32.h
string_64.h x86_64: kasan: add interceptors for memset/memmove/memcpy functions 2015-02-13 21:21:41 -08:00
string.h
suspend_32.h
suspend_64.h
suspend.h
svm.h
swiotlb.h x86: enable DMA CMA with swiotlb 2014-06-04 16:53:57 -07:00
switch_to.h sched/x86_64: Don't save flags on context switch 2014-10-28 11:11:30 +01:00
sync_bitops.h arch,x86: Convert smp_mb__*() 2014-04-18 14:20:46 +02:00
sys_ia32.h
syscall.h audit: use uapi/linux/audit.h for AUDIT_ARCH declarations 2014-03-20 10:11:59 -04:00
syscalls.h
sysfb.h
tce.h
thread_info.h all arches, signal: move restart_block to struct task_struct 2015-02-12 18:54:12 -08:00
time.h
timer.h Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-01-20 12:03:57 -08:00
timex.h
tlb.h
tlbflush.h x86: Store a per-cpu shadow copy of CR4 2015-02-04 12:10:42 +01:00
topology.h PCI changes for the v3.15 merge window: 2014-04-01 15:14:04 -07:00
trace_clock.h
traps.h x86, traps: Add ist_begin_non_atomic and ist_end_non_atomic 2015-01-02 10:22:46 -08:00
tsc.h x86, tsc: Fallback to normal calibration if fast MSR calibration fails 2014-02-19 17:12:24 +01:00
uaccess_32.h x86: Unify copy_to_user() and add size checking to it 2013-10-26 12:27:37 +02:00
uaccess_64.h x86, sparse: Do not force removal of __user when calling copy_to/from_user_nocheck() 2014-01-04 13:54:50 -08:00
uaccess.h x86/uaccess: fix sparse errors 2015-01-13 15:22:59 +02:00
unaligned.h
unistd.h sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL 2014-06-04 16:54:14 -07:00
uprobes.h uprobes/x86: Rename arch_uprobe->def to ->defparam, minor comment updates 2014-06-05 16:21:57 +02:00
user32.h
user_32.h
user_64.h
user.h
vdso.h x86, vdso: Move the vvar area before the vdso text 2014-07-11 16:57:51 -07:00
vga.h x86, ia64: Move EFI_FB vga_default_device() initialization to pci_vga_fixup() 2014-07-10 16:48:48 -06:00
vgtod.h x86, vdso: Use asm volatile in __getcpu 2014-12-23 13:05:30 -08:00
virtext.h x86: Store a per-cpu shadow copy of CR4 2015-02-04 12:10:42 +01:00
vm86.h
vmx.h KVM: VMX: Add PML support in VMX 2015-01-30 09:39:54 +01:00
vsyscall.h x86_64,vsyscall: Make vsyscall emulation configurable 2014-11-03 21:44:57 +01:00
vvar.h x86,vdso: Use LSL unconditionally for vgetcpu 2014-11-03 13:41:53 +01:00
word-at-a-time.h
x2apic.h
x86_init.h Revert "PCI: Add x86_msi.msi_mask_irq() and msix_mask_irq()" 2014-11-11 15:14:30 -07:00
xcr.h
xor_32.h
xor_64.h
xor_avx.h crypto: xor - Check for osxsave as well as avx in crypto/xor 2013-08-21 21:08:35 +10:00
xor.h
xsave.h KVM: x86: Enable Intel AVX-512 for guest 2014-11-03 12:07:30 +01:00