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f781951299
linux/arch/x86/include/asm
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Paolo Bonzini f781951299 kvm: add halt_poll_ns module parameter 
This patch introduces a new module parameter for the KVM module; when it
is present, KVM attempts a bit of polling on every HLT before scheduling
itself out via kvm_vcpu_block.

This parameter helps a lot for latency-bound workloads---in particular
I tested it with O_DSYNC writes with a battery-backed disk in the host.
In this case, writes are fast (because the data doesn't have to go all
the way to the platters) but they cannot be merged by either the host or
the guest.  KVM's performance here is usually around 30% of bare metal,
or 50% if you use cache=directsync or cache=writethrough (these
parameters avoid that the guest sends pointless flush requests, and
at the same time they are not slow because of the battery-backed cache).
The bad performance happens because on every halt the host CPU decides
to halt itself too.  When the interrupt comes, the vCPU thread is then
migrated to a new physical CPU, and in general the latency is horrible
because the vCPU thread has to be scheduled back in.

With this patch performance reaches 60-65% of bare metal and, more
important, 99% of what you get if you use idle=poll in the guest.  This
means that the tunable gets rid of this particular bottleneck, and more
work can be done to improve performance in the kernel or QEMU.

Of course there is some price to pay; every time an otherwise idle vCPUs
is interrupted by an interrupt, it will poll unnecessarily and thus
impose a little load on the host.  The above results were obtained with
a mostly random value of the parameter (500000), and the load was around
1.5-2.5% CPU usage on one of the host's core for each idle guest vCPU.

The patch also adds a new stat, /sys/kernel/debug/kvm/halt_successful_poll,
that can be used to tune the parameter.  It counts how many HLT
instructions received an interrupt during the polling period; each
successful poll avoids that Linux schedules the VCPU thread out and back
in, and may also avoid a likely trip to C1 and back for the physical CPU.

While the VM is idle, a Linux 4 VCPU VM halts around 10 times per second.
Of these halts, almost all are failed polls.  During the benchmark,
instead, basically all halts end within the polling period, except a more
or less constant stream of 50 per second coming from vCPUs that are not
running the benchmark.  The wasted time is thus very low.  Things may
be slightly different for Windows VMs, which have a ~10 ms timer tick.

The effect is also visible on Marcelo's recently-introduced latency
test for the TSC deadline timer.  Though of course a non-RT kernel has
awful latency bounds, the latency of the timer is around 8000-10000 clock
cycles compared to 20000-120000 without setting halt_poll_ns.  For the TSC
deadline timer, thus, the effect is both a smaller average latency and
a smaller variance.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-02-06 13:08:37 +01:00
..
crypto crypto: move x86 to the generic version of ablk_helper 2013-09-24 06:02:24 +10:00
numachip x86/PCI: Add NumaChip remote PCI support 2012-12-07 14:24:32 -07:00
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: introduce helper functions to do safe read and write accesses 2014-12-08 10:53:59 +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 ACPI: Don't use acpi_lapic in ACPI core code 2014-07-21 13:50:58 +02:00
agp.h
alternative-asm.h x86, alternative: Add header guards to <asm/alternative-asm.h> 2012-09-21 12:45:26 -07:00
alternative.h x86/alternative: Add alternative_input_2 to support alternative with two features and input 2014-05-29 14:24:53 -07:00
amd_nb.h x86/AMD/NB: Fix amd_set_subcaches() parameter type 2014-01-25 08:50:09 +01:00
apb_timer.h 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
apic_flat_64.h x86: Make flat_init_apic_ldr() available 2011-12-05 17:17:07 +01:00
apic.h Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-08-13 18:23:32 -06:00
apicdef.h x86/apic: Fix typo EIO_ACK -> EOI_ACK and document it 2012-05-18 09:46:07 +02:00
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_32.h: fix parameter naming mismatch 2012-05-09 11:38:20 +02:00
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 x86: Better comments for get_bios_ebda() 2011-04-29 14:13:15 -07:00
bitops.h Make ARCH_HAS_FAST_MULTIPLIER a real config variable 2014-09-13 11:14:53 -07:00
boot.h UAPI: (Scripted) Disintegrate arch/x86/include/asm 2012-12-14 22:37:13 +00:00
bootparam_utils.h x86: Don't clear olpc_ofw_header when sentinel is detected 2013-08-09 15:29:48 -07:00
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_64, entry: Treat regs->ax the same in fastpath and slowpath syscalls 2014-09-08 14:14:08 -07:00
ce4100.h x86: ce4100: Set pci ops via callback instead of module init 2011-03-14 15:13:23 +01:00
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 UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
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 compat: move compat_siginfo_t definition to asm/compat.h 2012-10-06 03:05:16 +09:00
context_tracking.h context_tracking: Move exception handling to generic code 2013-03-07 17:09:25 +01:00
cpu_device_id.h Add driver auto probing for x86 features v4 2012-01-26 16:44:41 -08:00
cpu.h x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
cpufeature.h x86: Add support for Intel HWP feature detection. 2014-11-12 00:04:37 +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 x86: replace percpu_xxx funcs with this_cpu_xxx 2012-05-14 14:15:31 -07:00
debugreg.h x86: Replace __get_cpu_var uses 2014-08-26 13:45:49 -04:00
delay.h asm-generic: move archictures to common delay.h 2011-07-22 18:46:24 +02:00
desc_defs.h
desc.h x86, trace: Delete __trace_alloc_intr_gate() 2013-11-08 14:15:47 -08:00
device.h driver core / ACPI: Move ACPI support to core device and driver types 2012-11-15 00:28:00 +01:00
disabled-features.h x86, mpx: Add MPX to disabled features 2014-11-18 00:58:53 +01:00
div64.h x86/div64: Add a micro-optimization shortcut if base is power of two 2011-12-05 18:16:11 +01:00
dma-mapping.h dma-debug: New interfaces to debug dma mapping errors 2012-10-24 17:06:43 +02:00
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 x86-64: Fix CFI data for interrupt frames 2011-09-28 19:04:52 +02:00
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 reboot: move arch/x86 reboot= handling to generic kernel 2013-07-09 10:33:29 -07:00
entry_arch.h x86, trace: Add irq vector tracepoints 2013-06-20 22:25:34 -07:00
espfix.h x86, espfix: Fix broken header guard 2014-05-02 11:34:17 -07:00
exec.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
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: Change __thread_fpu_begin() to use use_eager_fpu() 2014-09-02 14:51:15 -07:00
frame.h x86: Unify rwlock assembly implementation 2011-07-21 09:03:31 +02:00
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 x86, gart: Set DISTLBWALKPRB bit always 2011-04-18 09:26:48 -07:00
genapic.h
geode.h
gpio.h gpiolib/arches: Centralise bolierplate asm/gpio.h 2012-05-11 18:00:14 -06:00
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 UAPI: (Scripted) Disintegrate arch/x86/include/asm 2012-12-14 22:37:13 +00:00
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 x86: Correctly detect hypervisor 2013-08-05 06:35:33 -07:00
i387.h x86, kvm: fix kvm's usage of kernel_fpu_begin/end() 2012-09-21 16:59:04 -07:00
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 x86: Generate system call tables and unistd_*.h from tables 2011-11-17 13:35:37 -08:00
ia32.h x86: switch to generic old sigaction 2013-02-03 18:16:27 -05:00
idle.h x86: Merge the x86_32 and x86_64 cpu_idle() functions 2012-03-26 03:16:07 +02:00
inat_types.h
inat.h x86: Fix to decode grouped AVX with VEX pp bits 2012-02-11 15:11:35 +01:00
init.h x86, 64bit, mm: Add generic kernel/ident mapping helper 2013-01-29 15:12:25 -08:00
insn.h x86: Remove arbitrary instruction size limit in instruction decoder 2014-11-18 00:58:52 +01:00
inst.h x86, crc32-pclmul: Fix build with older binutils 2013-05-30 16:36:23 -07:00
intel_mid_vrtc.h intel_mid: Renamed *mrst* to *intel_mid* 2013-10-17 16:40:36 -07:00
intel_scu_ipc.h x86,mrst: Power control commands update 2011-12-05 12:42:11 +01:00
intel-mid.h x86, intel-mid: Add Merrifield platform support 2014-01-15 14:38:58 -08:00
io_apic.h x86, irq: Move IRQ initialization routines from io_apic.c into vector.c 2014-12-16 14:08:17 +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 x86/iommu: Use NULL instead of plain 0 for __IOMMU_INIT 2012-09-05 10:52:26 +02:00
iommu.h iommu: Remove group_mf 2012-06-25 13:48:30 +02:00
iosf_mbi.h x86, iosf: Added Quark MBI identifiers 2014-05-09 14:57:08 -07:00
ipi.h x86: Make default_send_IPI_mask_sequence/allbutself_logical() 32bit only 2011-01-28 14:54:05 +01:00
irq_regs.h x86: replace percpu_xxx funcs with this_cpu_xxx 2012-05-14 14:15:31 -07:00
irq_remapping.h iommu: dmar: Provide arch specific irq allocation 2014-05-16 14:05:19 +02:00
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 UAPI: (Scripted) Disintegrate arch/x86/include/asm 2012-12-14 22:37:13 +00:00
jump_label.h compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
kbdleds.h keyboard: Use BIOS Keyboard variable to set Numlock 2012-05-08 14:19:41 -07:00
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 kgdb: x86: Return all segment registers also in 64-bit mode 2012-03-22 15:07:15 -05:00
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 x86: kvm guest: pvclock vsyscall support 2012-11-27 23:29:10 -02:00
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: update comments 2011-07-22 14:39:50 +09:30
lguest.h lguest: map Switcher below fixmap. 2013-04-22 15:45:03 +09:30
linkage.h ix86: Tighten asmlinkage_protect() constraints 2013-01-24 11:25:59 +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 time: x86: Remove CLOCK_TICK_RATE from mach_timer.h 2011-11-21 19:00:57 -08:00
mach_traps.h x86/mrst: Avoid reporting wrong nmi status 2011-11-10 16:21:01 +01:00
math_emu.h
mc146818rtc.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
mce.h x86, mce, severity: Extend the the mce_severity mechanism to handle UCNA/DEFERRED error 2014-11-19 10:55:43 -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 x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
mmu_context.h Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-10 12:09:26 -08:00
mmu.h x86, vdso: Reimplement vdso.so preparation in build-time C 2014-05-05 13:18:51 -07:00
mmx.h
mmzone_32.h x86, platforms: Remove NUMAQ 2014-02-27 08:07:39 -08:00
mmzone_64.h Fix node_start/end_pfn() definition for mm/page_cgroup.c 2011-06-27 14:13:09 -07:00
mmzone.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
module.h x86, 386 removal: Remove CONFIG_M386 from Kconfig 2012-11-29 13:23:01 -08:00
mpspec_def.h MCA: delete all remaining traces of microchannel bus support. 2012-05-17 19:06:13 -04:00
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 Add arch_phys_wc_{add, del} to manipulate WC MTRRs if needed 2013-05-31 13:02:52 +10:00
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 UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
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 x86, nop: Make the ASM_NOP* macros work from assembly 2012-04-19 15:07:42 -07:00
numa_32.h x86, NUMA: Move NUMA init logic from numa_64.c to numa.c 2011-05-02 14:18:53 +02:00
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 x86, olpc: Use device tree for platform identification 2011-03-15 14:17:23 -07:00
olpc.h x86: OLPC: switch over to using new EC driver on x86 2012-07-31 23:27:30 -04:00
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 x86_64, traps: Stop using IST for #SS 2014-11-23 13:56:19 -08:00
page_64.h x86_64,vsyscall: Make vsyscall emulation configurable 2014-11-03 21:44:57 +01:00
page_types.h x86: revert wrong memblock current limit setting 2014-01-27 21:02:38 -08:00
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: Cleanly separate use of asm-generic/mm_hooks.h 2014-11-19 11:54:13 +01:00
parport.h X86: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
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: irq: Fix placement of mp_should_keep_irq() 2014-12-16 14:08:14 +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 Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-14 02:22:41 +02:00
pgtable_types.h xen: additional features for 3.19-rc0 2014-12-16 13:23:03 -08:00
pgtable-2level_types.h
pgtable-2level.h mm: x86 pgtable: require X86_64 for soft-dirty tracker 2014-06-04 16:54:05 -07:00
pgtable-3level_types.h
pgtable-3level.h mm: save soft-dirty bits on file pages 2013-08-13 17:57:48 -07:00
pgtable.h Merge branch 'akpm' (patchbomb from Andrew) 2014-12-10 18:34:42 -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 PMC device state and platform sleep state 2014-07-25 14:12:14 -07:00
posix_types.h UAPI: (Scripted) Disintegrate arch/x86/include/asm 2012-12-14 22:37:13 +00:00
preempt.h sched: Kill task_preempt_count() 2014-10-28 10:47:56 +01:00
probe_roms.h x86: Introduce pci_map_biosrom() 2011-03-15 15:34:15 -07:00
processor-cyrix.h
processor-flags.h UAPI: (Scripted) Disintegrate arch/x86/include/asm 2012-12-14 22:37:13 +00:00
processor.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
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 x86: pvclock: Add flag to indicate that a vm was stopped by the host 2012-04-08 12:48:57 +03:00
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 x86, realmode: Separate real_mode reserve and setup 2013-01-29 15:13:24 -08:00
reboot_fixups.h
reboot.h x86-64, reboot: Allow reboot=bios and reboot-cpu override on x86-64 2012-06-17 10:51:01 -07:00
required-features.h x86: Require MOVBE feature in cpuid when we use it 2013-01-28 16:59:55 -08:00
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 x86 rwsem: avoid taking slow path when stealing write lock 2013-05-07 07:20:17 -07:00
seccomp_32.h
seccomp_64.h
seccomp.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
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 UAPI: (Scripted) Disintegrate arch/x86/include/asm 2012-12-14 22:37:13 +00:00
sigframe.h x32: Add rt_sigframe_x32 2012-02-20 12:52:05 -08:00
sighandling.h x86/signals: Propagate RF EFLAGS bit through the signal restore call 2013-05-28 08:46:50 +02:00
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, smap: Add STAC and CLAC instructions to control user space access 2012-09-21 12:45:27 -07:00
smp.h x86/core, x86/xen/smp: Use 'die_complete' completion when taking CPU down 2014-11-10 11:16:40 +01:00
smpboot_hooks.h x86, apic: Replace trampoline physical addresses with defaults 2014-07-31 08:05:41 -07:00
sparsemem.h
special_insns.h x86: Add support for the clflushopt instruction 2014-02-27 08:23:28 -08:00
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 kernel: Provide READ_ONCE and ASSIGN_ONCE 2014-12-20 16:48:59 -08:00
sta2x11.h mfd: Add driver for STA2X11 MFD block 2012-05-09 15:34:28 +02:00
stackprotector.h x86: replace percpu_xxx funcs with this_cpu_xxx 2012-05-14 14:15:31 -07:00
stacktrace.h x86: Remove warning and warning_symbol from struct stacktrace_ops 2011-05-12 15:31:28 +02:00
string_32.h
string_64.h
string.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
suspend_32.h x86, gdt, hibernate: Store/load GDT for hibernate path. 2013-05-02 11:27:35 -07:00
suspend_64.h x86, gdt, hibernate: Store/load GDT for hibernate path. 2013-05-02 11:27:35 -07:00
suspend.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
svm.h UAPI: (Scripted) Disintegrate arch/x86/include/asm 2012-12-14 22:37:13 +00:00
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 unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
syscall.h audit: use uapi/linux/audit.h for AUDIT_ARCH declarations 2014-03-20 10:11:59 -04:00
syscalls.h x86, asmlinkage: Make various syscalls asmlinkage 2013-08-06 14:18:33 -07:00
sysfb.h x86: sysfb: move EFI quirks from efifb to sysfb 2013-08-02 16:17:47 -07:00
tce.h
thread_info.h uprobes, x86: Fix _TIF_UPROBE vs _TIF_NOTIFY_RESUME 2014-11-23 14:25:28 -08:00
time.h x86: i8253: Consolidate definitions of global_clock_event 2011-06-09 15:01:40 +02:00
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 x86-32: Fix possible incomplete TLB invalidate with PAE pagetables 2013-04-12 16:56:47 -07:00
tlbflush.h mm, x86: Account for TLB flushes only when debugging 2014-01-25 09:10:41 +01:00
topology.h PCI changes for the v3.15 merge window: 2014-04-01 15:14:04 -07:00
trace_clock.h tracing: Format non-nanosec times from tsc clock without a decimal point. 2012-11-13 15:48:40 -05:00
traps.h x86_64, traps: Stop using IST for #SS 2014-11-23 13:56:19 -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 Merge branch 'x86/mpx' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-01-20 14:46:32 -08:00
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 UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers 2012-10-02 18:01:25 +01:00
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 LSL unconditionally for vgetcpu 2014-11-03 13:41:53 +01:00
virtext.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
vm86.h UAPI: (Scripted) Disintegrate arch/x86/include/asm 2012-12-14 22:37:13 +00:00
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 word-at-a-time: make the interfaces truly generic 2012-05-26 11:33:40 -07:00
x2apic.h x86/apic: Factor out default target_cpus() operation 2012-06-06 10:22:17 +02:00
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 x86/xor: Add alternative SSE implementation only prefetching once per 64-byte line 2013-01-25 09:23:50 +01:00
xor_64.h x86/xor: Add alternative SSE implementation only prefetching once per 64-byte line 2013-01-25 09:23:50 +01:00
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 x86/xor: Add alternative SSE implementation only prefetching once per 64-byte line 2013-01-25 09:23:50 +01:00
xsave.h KVM: x86: Enable Intel AVX-512 for guest 2014-11-03 12:07:30 +01:00