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Andrea Arcangeli 26c191788f mm: pmd_read_atomic: fix 32bit PAE pmd walk vs pmd_populate SMP race condition 
When holding the mmap_sem for reading, pmd_offset_map_lock should only
run on a pmd_t that has been read atomically from the pmdp pointer,
otherwise we may read only half of it leading to this crash.

PID: 11679  TASK: f06e8000  CPU: 3   COMMAND: "do_race_2_panic"
 #0 [f06a9dd8] crash_kexec at c049b5ec
 #1 [f06a9e2c] oops_end at c083d1c2
 #2 [f06a9e40] no_context at c0433ded
 #3 [f06a9e64] bad_area_nosemaphore at c043401a
 #4 [f06a9e6c] __do_page_fault at c0434493
 #5 [f06a9eec] do_page_fault at c083eb45
 #6 [f06a9f04] error_code (via page_fault) at c083c5d5
    EAX: 01fb470c EBX: fff35000 ECX: 00000003 EDX: 00000100 EBP:
    00000000
    DS:  007b     ESI: 9e201000 ES:  007b     EDI: 01fb4700 GS:  00e0
    CS:  0060     EIP: c083bc14 ERR: ffffffff EFLAGS: 00010246
 #7 [f06a9f38] _spin_lock at c083bc14
 #8 [f06a9f44] sys_mincore at c0507b7d
 #9 [f06a9fb0] system_call at c083becd
                         start           len
    EAX: ffffffda  EBX: 9e200000  ECX: 00001000  EDX: 6228537f
    DS:  007b      ESI: 00000000  ES:  007b      EDI: 003d0f00
    SS:  007b      ESP: 62285354  EBP: 62285388  GS:  0033
    CS:  0073      EIP: 00291416  ERR: 000000da  EFLAGS: 00000286

This should be a longstanding bug affecting x86 32bit PAE without THP.
Only archs with 64bit large pmd_t and 32bit unsigned long should be
affected.

With THP enabled the barrier() in pmd_none_or_trans_huge_or_clear_bad()
would partly hide the bug when the pmd transition from none to stable,
by forcing a re-read of the *pmd in pmd_offset_map_lock, but when THP is
enabled a new set of problem arises by the fact could then transition
freely in any of the none, pmd_trans_huge or pmd_trans_stable states.
So making the barrier in pmd_none_or_trans_huge_or_clear_bad()
unconditional isn't good idea and it would be a flakey solution.

This should be fully fixed by introducing a pmd_read_atomic that reads
the pmd in order with THP disabled, or by reading the pmd atomically
with cmpxchg8b with THP enabled.

Luckily this new race condition only triggers in the places that must
already be covered by pmd_none_or_trans_huge_or_clear_bad() so the fix
is localized there but this bug is not related to THP.

NOTE: this can trigger on x86 32bit systems with PAE enabled with more
than 4G of ram, otherwise the high part of the pmd will never risk to be
truncated because it would be zero at all times, in turn so hiding the
SMP race.

This bug was discovered and fully debugged by Ulrich, quote:

----
[..]
pmd_none_or_trans_huge_or_clear_bad() loads the content of edx and
eax.

    496 static inline int pmd_none_or_trans_huge_or_clear_bad(pmd_t
    *pmd)
    497 {
    498         /* depend on compiler for an atomic pmd read */
    499         pmd_t pmdval = *pmd;

                                // edi = pmd pointer
0xc0507a74 <sys_mincore+548>:   mov    0x8(%esp),%edi
...
                                // edx = PTE page table high address
0xc0507a84 <sys_mincore+564>:   mov    0x4(%edi),%edx
...
                                // eax = PTE page table low address
0xc0507a8e <sys_mincore+574>:   mov    (%edi),%eax

[..]

Please note that the PMD is not read atomically. These are two "mov"
instructions where the high order bits of the PMD entry are fetched
first. Hence, the above machine code is prone to the following race.

-  The PMD entry {high|low} is 0x0000000000000000.
   The "mov" at 0xc0507a84 loads 0x00000000 into edx.

-  A page fault (on another CPU) sneaks in between the two "mov"
   instructions and instantiates the PMD.

-  The PMD entry {high|low} is now 0x00000003fda38067.
   The "mov" at 0xc0507a8e loads 0xfda38067 into eax.
----

Reported-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Petr Matousek <pmatouse@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2012-05-29 16:22:24 -07:00
..
numachip x86: Add NumaChip support 2011-12-05 17:17:24 +01:00
uv x86/uv: Fix uv_gpa_to_soc_phys_ram() shift 2012-01-26 10:58:27 +01:00
visws x86: Move pci init function to x86_init 2010-02-19 16:12:29 -08:00
xen Merge branch 'stable/autoballoon.v5.2' into stable/for-linus-3.5 2012-05-07 15:33:27 -04:00
Kbuild x32: Generate <asm/unistd_x32.h> 2012-02-20 12:51:00 -08:00
a.out-core.h
…
a.out.h
…
acpi.h Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 2011-05-29 11:18:09 -07:00
aes.h
…
agp.h
…
alternative-asm.h x86: Fix atomic64_xxx_cx8() functions 2012-01-04 15:01:56 +01:00
alternative.h x86: Adjust asm constraints in atomic64 wrappers 2012-01-20 17:29:31 -08:00
amd_nb.h x86/PCI: amd: factor out MMCONFIG discovery 2012-01-06 12:11:19 -08:00
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.h x86/apic: Implement EIO micro-optimization 2012-05-18 09:46:09 +02:00
apic_flat_64.h x86: Make flat_init_apic_ldr() available 2011-12-05 17:17:07 +01:00
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 x86, hweight: Use a 32-bit popcnt for __arch_hweight32() 2010-05-17 15:17:16 -07:00
archrandom.h x86, random: Verify RDRAND functionality and allow it to be disabled 2011-07-31 14:02:19 -07:00
asm-offsets.h
…
asm.h x86, extable: Switch to relative exception table entries 2012-04-20 17:22:34 -07:00
atomic.h x86: Use xadd helper more widely 2011-08-29 13:44:12 -07:00
atomic64_32.h atomic64_32.h: fix parameter naming mismatch 2012-05-09 11:38:20 +02:00
atomic64_64.h x86: Use xadd helper more widely 2011-08-29 13:44:12 -07:00
auxvec.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
barrier.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
bios_ebda.h x86: Better comments for get_bios_ebda() 2011-04-29 14:13:15 -07:00
bitops.h x86_64, asm: Optimise fls(), ffs() and fls64() 2011-12-15 15:16:49 -08:00
bitsperlong.h
…
boot.h x86: Use common threadinfo allocator 2012-05-08 14:08:44 +02:00
bootparam.h keyboard: Use BIOS Keyboard variable to set Numlock 2012-05-08 14:19:41 -07:00
bug.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
bugs.h
…
byteorder.h
…
cache.h Rename .data.read_mostly to .data..read_mostly. 2010-03-03 11:26:00 +01:00
cacheflush.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
calgary.h x86, iommu: Make all IOMMU's detection routines return a value. 2010-08-26 15:13:13 -07:00
calling.h x86, asm: Flip RESTORE_ARGS arguments logic 2011-06-03 14:38:53 -07:00
ce4100.h x86: ce4100: Set pci ops via callback instead of module init 2011-03-14 15:13:23 +01:00
checksum.h
…
checksum_32.h
…
checksum_64.h
…
clocksource.h clocksource: Change __ARCH_HAS_CLOCKSOURCE_DATA to a CONFIG option 2011-07-21 13:34:05 -07:00
cmpxchg.h x86: Use correct byte-sized register constraint in __add() 2012-04-06 09:40:07 -07:00
cmpxchg_32.h x86: Fix and improve cmpxchg_double{,_local}() 2012-01-04 15:01:54 +01:00
cmpxchg_64.h x86: Fix and improve cmpxchg_double{,_local}() 2012-01-04 15:01:54 +01:00
compat.h x86: replace percpu_xxx funcs with this_cpu_xxx 2012-05-14 14:15:31 -07:00
cpu.h x86: Fix mwait_usable section mismatch 2011-02-14 12:08:28 +01:00
cpu_device_id.h Add driver auto probing for x86 features v4 2012-01-26 16:44:41 -08:00
cpufeature.h Merge branches 'x86-cpu-for-linus', 'x86-boot-for-linus', 'x86-cpufeature-for-linus', 'x86-process-for-linus' and 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-22 09:28:15 -07:00
cpumask.h
…
cputime.h
…
current.h x86: replace percpu_xxx funcs with this_cpu_xxx 2012-05-14 14:15:31 -07:00
debugreg.h x86: relocate get/set debugreg fcns to include/asm/debugreg. 2012-02-28 17:48:04 -05:00
delay.h asm-generic: move archictures to common delay.h 2011-07-22 18:46:24 +02:00
desc.h x86: replace percpu_xxx funcs with this_cpu_xxx 2012-05-14 14:15:31 -07:00
desc_defs.h
…
device.h x86-32: Introduce CONFIG_X86_DEV_DMA_OPS 2012-04-12 11:09:56 -07:00
div64.h x86/div64: Add a micro-optimization shortcut if base is power of two 2011-12-05 18:16:11 +01:00
dma-contiguous.h X86: integrate CMA with DMA-mapping subsystem 2012-05-21 15:09:38 +02:00
dma-mapping.h Merge branch 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping 2012-05-25 09:18:59 -07:00
dma.h x86, NUMA: Enable emulation on 32bit too 2011-05-02 17:24:48 +02:00
dmi.h
…
dwarf2.h x86-64: Fix CFI data for interrupt frames 2011-09-28 19:04:52 +02:00
e820.h Revert "x86, efi: Calling __pa() with an ioremap()ed address is invalid" 2011-12-12 18:25:56 +01:00
edac.h
…
efi.h x86, efi: Allow basic init with mixed 32/64-bit efi/kernel 2012-02-23 18:54:51 -08:00
elf.h 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
emergency-restart.h
…
entry_arch.h x86, mce: Replace MCE_SELF_VECTOR by irq_work 2011-06-16 12:10:08 +02:00
errno.h
…
exec.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
fb.h x86-64: Allow fbdev primary video code 2010-02-16 21:22:26 -08:00
fcntl.h
…
fixmap.h x86/intel config: Revamp configuration to allow for Moorestown and Medfield 2011-12-18 09:17:02 +01:00
floppy.h
…
fpu-internal.h x86: replace percpu_xxx funcs with this_cpu_xxx 2012-05-14 14:15:31 -07:00
frame.h x86: Unify rwlock assembly implementation 2011-07-21 09:03:31 +02:00
ftrace.h ftrace/x86: Have arch x86_64 use breakpoints instead of stop machine 2012-04-27 21:10:44 -04:00
futex.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
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: replace percpu_xxx funcs with this_cpu_xxx 2012-05-14 14:15:31 -07:00
highmem.h highmem: kill all __kmap_atomic() 2012-03-20 21:48:30 +08:00
hpet.h x86: ioapic/hpet: Convert to new chip functions 2010-10-12 16:53:37 +02:00
hugetlb.h
…
hw_breakpoint.h x86: Fix instruction breakpoint encoding 2010-09-17 03:24:13 +02:00
hw_irq.h iommu: Rename the DMAR and INTR_REMAP config options 2011-09-21 10:22:03 +02:00
hypertransport.h
…
hyperv.h Staging: hv: vmbus: Retry vmbus_post_msg() before giving up 2011-08-25 15:23:19 -07:00
hypervisor.h xen: HVM X2APIC support 2011-01-07 10:03:50 -05:00
i387.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
i8259.h x86: i8259: Convert to new irq_chip functions 2010-10-12 16:53:36 +02:00
ia32.h signal, x86: add SIGSYS info and make it synchronous. 2012-04-14 11:13:21 +10:00
ia32_unistd.h x86: Generate system call tables and unistd_*.h from tables 2011-11-17 13:35:37 -08:00
idle.h x86: Merge the x86_32 and x86_64 cpu_idle() functions 2012-03-26 03:16:07 +02:00
inat.h x86: Fix to decode grouped AVX with VEX pp bits 2012-02-11 15:11:35 +01:00
inat_types.h
…
init.h x86, mm: Unify zone_sizes_init() 2011-11-11 10:22:55 +01:00
insn.h x86: Fix to decode grouped AVX with VEX pp bits 2012-02-11 15:11:35 +01:00
inst.h crypto: aesni-intel - Fix another CTR build failure with gas 2.16.1 2010-03-24 21:37:57 +08:00
intel_scu_ipc.h x86,mrst: Power control commands update 2011-12-05 12:42:11 +01:00
io.h x86: don't include xen/xen.h in <asm/io.h> unless XEN is enabled 2011-08-03 22:00:38 -10:00
io_apic.h x86/apic: Replace io_apic_ops with x86_io_apic_ops. 2012-05-01 14:50:09 -04:00
ioctl.h
…
ioctls.h
…
iomap.h mm: stack based kmap_atomic() 2010-10-26 16:52:08 -07:00
iommu.h iommu: Add option to group multi-function devices 2011-11-15 12:22:31 +01:00
iommu_table.h x86, iommu: Update header comments with appropriate naming 2010-10-08 13:11:21 -07:00
ipcbuf.h
…
ipi.h x86: Make default_send_IPI_mask_sequence/allbutself_logical() 32bit only 2011-01-28 14:54:05 +01:00
irq.h x86: Add device tree support 2011-02-23 22:27:52 +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 irq_remap: Fix compiler warning with CONFIG_IRQ_REMAP=y 2012-05-08 11:17:29 +02:00
irq_vectors.h x86/irq: Standardize on CONFIG_SPARSE_IRQ=y 2011-10-13 12:12:12 +02:00
irqflags.h tracing, x86/irq: Do not trace arch_local_{*,irq_*}() functions 2011-07-07 19:22:32 +02:00
ist.h
…
jump_label.h static keys: Introduce 'struct static_key', static_key_true()/false() and static_key_slow_[inc|dec]() 2012-02-24 10:05:59 +01:00
kbdleds.h keyboard: Use BIOS Keyboard variable to set Numlock 2012-05-08 14:19:41 -07:00
kdebug.h x86: Avoid double stack traces with show_regs() 2012-05-09 11:44:42 +02:00
kexec.h
…
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 x86: Move MAX_INSN_SIZE into asm/insn.h 2010-03-10 13:23:34 +01:00
kvm.h KVM: provide synchronous registers in kvm_run 2012-03-05 14:52:22 +02:00
kvm_emulate.h KVM: x86 emulator: MMX support 2012-04-16 20:36:16 -03:00
kvm_host.h Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2012-05-24 16:17:30 -07:00
kvm_para.h Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2012-05-24 16:17:30 -07:00
ldt.h
…
lguest.h
…
lguest_hcall.h lguest: update comments 2011-07-22 14:39:50 +09:30
linkage.h x86: Get rid of asmregparm 2011-05-24 14:33:35 +02:00
local.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
local64.h arch: Implement local64_t 2010-06-09 11:12:36 +02:00
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 Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
mce.h x86/mce: Convert static array of pointers to per-cpu variables 2012-02-22 12:58:06 -08:00
microcode.h x86, microcode, AMD: Add a vendor-specific exit function 2011-12-14 12:46:47 +01:00
mman.h
…
mmconfig.h
…
mmu.h x86: Reorder mm_context_t to remove x86_64 alignment padding and thus shrink mm_struct 2011-05-25 16:16:41 +02:00
mmu_context.h x86: replace percpu_xxx funcs with this_cpu_xxx 2012-05-14 14:15:31 -07:00
mmx.h
…
mmzone.h
…
mmzone_32.h x86: Drop obsolete ARCH_BOOTMEM support 2012-04-14 14:28:58 +02:00
mmzone_64.h Fix node_start/end_pfn() definition for mm/page_cgroup.c 2011-06-27 14:13:09 -07:00
module.h x86, cpu: Move AMD Elan Kconfig under "Processor family" 2011-04-08 13:01:25 -07:00
mpspec.h MCA: delete all remaining traces of microchannel bus support. 2012-05-17 19:06:13 -04:00
mpspec_def.h MCA: delete all remaining traces of microchannel bus support. 2012-05-17 19:06:13 -04:00
mrst-vrtc.h x86: mrst: Add vrtc driver which serves as a wall clock device 2010-11-11 11:34:27 +01:00
mrst.h x86/mid: Remove Intel Moorestown 2012-01-26 21:23:53 +01:00
msgbuf.h
…
mshyperv.h x86: Clean up the hypervisor layer 2010-05-07 17:13:04 -07:00
msidef.h
…
msr-index.h Merge branch 'perf/x86-ibs' into perf/core 2012-05-09 15:22:23 +02:00
msr.h x86, doc: Revert "x86: Document rdmsr_safe restrictions" 2012-04-19 17:07:34 -07:00
mtrr.h x86, mtrr: Use explicit sizing and padding for the 64-bit ioctls 2012-03-01 12:48:52 -08:00
mutex.h
…
mutex_32.h
…
mutex_64.h
…
mwait.h x86, mwait: Move mwait constants to a common header file 2010-09-17 15:36:40 -07:00
nmi.h x86/nmi: Fix the type of the nmiaction.flags field 2012-05-07 12:32:11 +02:00
nops.h x86, nop: Make the ASM_NOP* macros work from assembly 2012-04-19 15:07:42 -07:00
numa.h x86, NUMA: Make numa_init_array() static 2011-05-02 17:24:48 +02:00
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_64.h x86, NUMA: Move NUMA init logic from numa_64.c to numa.c 2011-05-02 14:18:53 +02:00
numaq.h x86-32, NUMA: Update numaq to use new NUMA init protocol 2011-05-02 14:18:53 +02:00
olpc.h x86, olpc-xo1-sci: Add GPE handler and ebook switch functionality 2011-07-06 14:44:38 -07:00
olpc_ofw.h x86, olpc: Use device tree for platform identification 2011-03-15 14:17:23 -07:00
page.h x86: Document __phys_reloc_hide() usage in __pa_symbol() 2010-08-11 08:43:49 +02:00
page_32.h
…
page_32_types.h x86: Use common threadinfo allocator 2012-05-08 14:08:44 +02:00
page_64.h
…
page_64_types.h x86: Use common threadinfo allocator 2012-05-08 14:08:44 +02:00
page_types.h Move all declarations of free_initmem() to linux/mm.h 2012-03-28 18:30:03 +01:00
param.h
…
paravirt.h x86, paravirt: Replace GET_CR2_INTO_RCX with GET_CR2_INTO_RAX 2012-04-19 15:07:56 -07:00
paravirt_types.h Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-tip 2011-08-12 20:46:24 -07:00
parport.h
…
pat.h
…
pci-direct.h
…
pci-functions.h
…
pci.h x86/PCI: Expand the x86_msi_ops to have a restore MSIs. 2012-01-06 14:02:26 -08:00
pci_64.h x86: Only call dma32_reserve_bootmem 64bit !CONFIG_NUMA 2010-02-10 17:47:18 -08:00
pci_x86.h PCI: Pull PCI 'latency timer' setup up into the core 2012-01-06 12:10:42 -08:00
percpu.h percpu: remove percpu_xxx() functions 2012-05-14 14:15:32 -07:00
perf_event.h perf/x86/ibs: Fix undefined reference to `get_ibs_caps' 2012-05-14 14:31:35 +02:00
perf_event_p4.h x86, perf: P4 PMU - Fix typos in comments and style cleanup 2011-07-21 20:41:54 +02:00
pgalloc.h tree-wide: fix comment/printk typos 2010-11-01 15:38:34 -04:00
pgtable-2level.h thp: add x86 32bit support 2011-01-13 17:32:44 -08:00
pgtable-2level_types.h
…
pgtable-3level.h mm: pmd_read_atomic: fix 32bit PAE pmd walk vs pmd_populate SMP race condition 2012-05-29 16:22:24 -07:00
pgtable-3level_types.h
…
pgtable.h x86: Use "do { } while(0)" for empty flush_tlb_fix_spurious_fault() macro 2011-12-18 09:14:18 +01:00
pgtable_32.h mm: remove pte_*map_nested() 2010-10-26 16:52:08 -07:00
pgtable_32_types.h x86: use __ASSEMBLY__ rather than __ASSEMBLER__ 2010-06-07 17:27:11 -07:00
pgtable_64.h thp: add x86 32bit support 2011-01-13 17:32:44 -08:00
pgtable_64_types.h
…
pgtable_types.h x86-64: Map the HPET NX 2011-06-05 21:30:33 +02:00
poll.h
…
posix_types.h x32: Check __ILP32__ instead of __LP64__ for x32 2012-04-23 14:51:14 -07:00
posix_types_32.h x86: Use generic posix_types.h 2012-02-14 12:01:30 -08:00
posix_types_64.h x86: Use generic posix_types.h 2012-02-14 12:01:30 -08:00
posix_types_x32.h x32: Create posix_types_x32.h 2012-02-20 12:48:47 -08:00
prctl.h
…
probe_roms.h x86: Introduce pci_map_biosrom() 2011-03-15 15:34:15 -07:00
processor-cyrix.h
…
processor-flags.h x86: Fix rflags in FAKE_STACK_FRAME 2011-12-06 10:02:38 +01:00
processor.h Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-05-23 10:59:07 -07:00
prom.h irq_domain/x86: Convert x86 (embedded) to use common irq_domain 2012-02-23 14:37:47 -07:00
proto.h Move round_up/down to kernel.h 2010-02-12 09:42:39 -08:00
ptrace-abi.h x86: Fix common misspellings 2011-03-18 10:39:30 +01:00
ptrace.h x86: Move some signal-handling definitions to a common header 2012-02-20 12:52:04 -08:00
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 KVM: Fix instruction size issue in pvclock scaling 2011-08-30 14:42:30 +03:00
reboot.h x86, nmi: Wire up NMI handlers to new routines 2011-10-10 06:56:57 +02:00
reboot_fixups.h
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required-features.h x86, cpu: Support the features flags in new CPUID leaf 7 2010-07-07 17:29:18 -07:00
resource.h
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resume-trace.h
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rio.h
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rtc.h
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rwlock.h x86: Fix write lock scalability 64-bit issue 2011-07-21 09:03:36 +02:00
rwsem.h x86: Use xadd helper more widely 2011-08-29 13:44:12 -07:00
scatterlist.h remove needless ISA_DMA_THRESHOLD 2010-08-07 18:15:50 +02:00
seccomp.h
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seccomp_32.h
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seccomp_64.h
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sections.h
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segment.h x86-64: Handle exception table entries during early boot 2012-04-19 15:42:45 -07:00
sembuf.h
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serial.h
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serpent.h crypto: serpent - add 4-way parallel i586/SSE2 assembler implementation 2011-11-21 16:13:23 +08:00
setup.h x86/intel config: Revamp configuration to allow for Moorestown and Medfield 2011-12-18 09:17:02 +01:00
setup_arch.h
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shmbuf.h
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shmparam.h
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sigcontext.h x32: Check __ILP32__ instead of __LP64__ for x32 2012-04-23 14:51:14 -07:00
sigcontext32.h
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sigframe.h x32: Add rt_sigframe_x32 2012-02-20 12:52:05 -08:00
sighandling.h x32: Export setup/restore_sigcontext from signal.c 2012-02-20 12:52:04 -08:00
siginfo.h x32, siginfo: Provide proper overrides for x32 siginfo_t 2012-04-23 18:11:40 -07:00
signal.h
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smp.h Merge branch 'for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2012-05-22 17:37:47 -07:00
smpboot_hooks.h x86: Serialize SMP bootup CMOS accesses on rtc_lock 2011-07-21 09:20:59 +02:00
socket.h
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sockios.h
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sparsemem.h
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special_insns.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
spinlock.h x86: spinlock.h: Remove REG_PTR_MODE 2012-03-30 10:01:59 -07:00
spinlock_types.h x86/spinlocks: Eliminate TICKET_MASK 2012-02-07 10:09:54 +01:00
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
stat.h vfs: don't force a big memset of stat data just to clear padding fields 2012-05-06 18:02:40 -07:00
statfs.h
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string.h
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string_32.h
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string_64.h
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suspend.h
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suspend_32.h PM / Hibernate: Remove arch_prepare_suspend() 2011-05-24 23:35:55 +02:00
suspend_64.h PM / Hibernate: Remove arch_prepare_suspend() 2011-05-24 23:35:55 +02:00
svm.h KVM: SVM: copy instruction bytes from VMCB 2011-01-12 11:31:07 +02:00
swab.h
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swiotlb.h x86, swiotlb: Simplify SWIOTLB pci_swiotlb_detect routine. 2010-08-26 15:13:29 -07:00
switch_to.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
sync_bitops.h
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sys_ia32.h x86: Add #ifdef CONFIG_COMPAT to <asm/sys_ia32.h> 2012-02-20 12:52:05 -08:00
syscall.h arch/x86: add syscall_get_arch to syscall.h 2012-04-14 11:13:20 +10:00
syscalls.h Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
tce.h
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termbits.h
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termios.h
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thread_info.h Merge branch 'perf-uprobes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-05-24 11:39:34 -07:00
time.h x86: i8253: Consolidate definitions of global_clock_event 2011-06-09 15:01:40 +02:00
timer.h sched/x86: Fix overflow in cyc2ns_offset 2012-03-13 16:27:51 +01:00
timex.h
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tlb.h
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tlbflush.h Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-05-23 11:06:59 -07:00
topology.h sched/numa: Rewrite the CONFIG_NUMA sched domain support 2012-05-09 15:00:55 +02:00
trampoline.h x86, trampoline: Use the unified trampoline setup for ACPI wakeup 2011-02-17 21:05:06 -08:00
traps.h x86: Use enum instead of literals for trap values 2012-03-09 16:47:54 -08:00
tsc.h x86: kvmclock: abstract save/restore sched_clock_state 2012-03-20 12:37:45 +02:00
types.h remove dma64_addr_t 2011-03-23 19:47:18 -07:00
uaccess.h x86: use the new generic strnlen_user() function 2012-05-26 11:33:54 -07:00
uaccess_32.h x86: use the new generic strnlen_user() function 2012-05-26 11:33:54 -07:00
uaccess_64.h x86: use the new generic strnlen_user() function 2012-05-26 11:33:54 -07:00
ucontext.h
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unaligned.h
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unistd.h x32: Check __ILP32__ instead of __LP64__ for x32 2012-04-23 14:51:14 -07:00
uprobes.h uprobes/core: Handle breakpoint and singlestep exceptions 2012-03-14 07:41:36 +01:00
user.h x86, ptrace: regset extensions to support xstate 2010-02-11 15:08:17 -08:00
user32.h
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user_32.h
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user_64.h
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vdso.h x86-64: Clean up vdso/kernel shared variables 2011-05-24 14:51:28 +02:00
vga.h efifb: Implement vga_default_device() (v2) 2012-04-24 09:50:18 +01:00
vgtod.h x86-64: Simplify and optimize vdso clock_gettime monotonic variants 2012-03-23 16:49:33 -07:00
virtext.h Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
vm86.h
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vmx.h KVM: APIC: avoid instruction emulation for EOI writes 2011-09-25 19:52:17 +03:00
vsyscall.h x86-64: Rework vsyscall emulation and add vsyscall= parameter 2011-08-10 19:26:46 -05:00
vvar.h x86-64: Give vvars their own page 2011-06-05 21:30:32 +02:00
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: Add separate apic_id_valid() functions for selected apic drivers 2012-03-23 13:28:43 +01:00
x86_init.h x86/apic: Replace io_apic_ops with x86_io_apic_ops. 2012-05-01 14:50:09 -04:00
xcr.h
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xor.h
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xor_32.h raid5: add AVX optimized RAID5 checksumming 2012-05-22 13:54:04 +10:00
xor_64.h raid5: add AVX optimized RAID5 checksumming 2012-05-22 13:54:04 +10:00
xor_avx.h raid5: add AVX optimized RAID5 checksumming 2012-05-22 13:54:04 +10:00
xsave.h x86, extable: Remove open-coded exception table entries in arch/x86/include/asm/xsave.h 2012-04-20 13:51:40 -07:00