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Dave Hansen 5a28fc94c9 x86/mpx, mm/core: Fix recursive munmap() corruption 
This is a bit of a mess, to put it mildly.  But, it's a bug
that only seems to have showed up in 4.20 but wasn't noticed
until now, because nobody uses MPX.

MPX has the arch_unmap() hook inside of munmap() because MPX
uses bounds tables that protect other areas of memory.  When
memory is unmapped, there is also a need to unmap the MPX
bounds tables.  Barring this, unused bounds tables can eat 80%
of the address space.

But, the recursive do_munmap() that gets called vi arch_unmap()
wreaks havoc with __do_munmap()'s state.  It can result in
freeing populated page tables, accessing bogus VMA state,
double-freed VMAs and more.

See the "long story" further below for the gory details.

To fix this, call arch_unmap() before __do_unmap() has a chance
to do anything meaningful.  Also, remove the 'vma' argument
and force the MPX code to do its own, independent VMA lookup.

== UML / unicore32 impact ==

Remove unused 'vma' argument to arch_unmap().  No functional
change.

I compile tested this on UML but not unicore32.

== powerpc impact ==

powerpc uses arch_unmap() well to watch for munmap() on the
VDSO and zeroes out 'current->mm->context.vdso_base'.  Moving
arch_unmap() makes this happen earlier in __do_munmap().  But,
'vdso_base' seems to only be used in perf and in the signal
delivery that happens near the return to userspace.  I can not
find any likely impact to powerpc, other than the zeroing
happening a little earlier.

powerpc does not use the 'vma' argument and is unaffected by
its removal.

I compile-tested a 64-bit powerpc defconfig.

== x86 impact ==

For the common success case this is functionally identical to
what was there before.  For the munmap() failure case, it's
possible that some MPX tables will be zapped for memory that
continues to be in use.  But, this is an extraordinarily
unlikely scenario and the harm would be that MPX provides no
protection since the bounds table got reset (zeroed).

I can't imagine anyone doing this:

	ptr = mmap();
	// use ptr
	ret = munmap(ptr);
	if (ret)
		// oh, there was an error, I'll
		// keep using ptr.

Because if you're doing munmap(), you are *done* with the
memory.  There's probably no good data in there _anyway_.

This passes the original reproducer from Richard Biener as
well as the existing mpx selftests/.

The long story:

munmap() has a couple of pieces:

 1. Find the affected VMA(s)
 2. Split the start/end one(s) if neceesary
 3. Pull the VMAs out of the rbtree
 4. Actually zap the memory via unmap_region(), including
    freeing page tables (or queueing them to be freed).
 5. Fix up some of the accounting (like fput()) and actually
    free the VMA itself.

This specific ordering was actually introduced by:

  dd2283f260 ("mm: mmap: zap pages with read mmap_sem in munmap")

during the 4.20 merge window.  The previous __do_munmap() code
was actually safe because the only thing after arch_unmap() was
remove_vma_list().  arch_unmap() could not see 'vma' in the
rbtree because it was detached, so it is not even capable of
doing operations unsafe for remove_vma_list()'s use of 'vma'.

Richard Biener reported a test that shows this in dmesg:

  [1216548.787498] BUG: Bad rss-counter state mm:0000000017ce560b idx:1 val:551
  [1216548.787500] BUG: non-zero pgtables_bytes on freeing mm: 24576

What triggered this was the recursive do_munmap() called via
arch_unmap().  It was freeing page tables that has not been
properly zapped.

But, the problem was bigger than this.  For one, arch_unmap()
can free VMAs.  But, the calling __do_munmap() has variables
that *point* to VMAs and obviously can't handle them just
getting freed while the pointer is still in use.

I tried a couple of things here.  First, I tried to fix the page
table freeing problem in isolation, but I then found the VMA
issue.  I also tried having the MPX code return a flag if it
modified the rbtree which would force __do_munmap() to re-walk
to restart.  That spiralled out of control in complexity pretty
fast.

Just moving arch_unmap() and accepting that the bonkers failure
case might eat some bounds tables seems like the simplest viable
fix.

This was also reported in the following kernel bugzilla entry:

  https://bugzilla.kernel.org/show_bug.cgi?id=203123

There are some reports that this commit triggered this bug:

  dd2283f260 ("mm: mmap: zap pages with read mmap_sem in munmap")

While that commit certainly made the issues easier to hit, I believe
the fundamental issue has been with us as long as MPX itself, thus
the Fixes: tag below is for one of the original MPX commits.

[ mingo: Minor edits to the changelog and the patch. ]

Reported-by: Richard Biener <rguenther@suse.de>
Reported-by: H.J. Lu <hjl.tools@gmail.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Yang Shi <yang.shi@linux.alibaba.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: linux-arch@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: linux-um@lists.infradead.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: stable@vger.kernel.org
Fixes: dd2283f260 ("mm: mmap: zap pages with read mmap_sem in munmap")
Link: http://lkml.kernel.org/r/20190419194747.5E1AD6DC@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-05-09 10:37:17 +02:00
..
crypto crypto: x86/glue_helper - rename glue_skwalk_fpu_begin() 2018-03-03 00:03:35 +08:00
e820 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fpu x86: Convert some slow-path static_cpu_has() callers to boot_cpu_has() 2019-04-08 12:13:34 +02:00
numachip
trace Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-12-26 17:03:51 -08:00
uv Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-03-07 18:26:39 -08:00
xen Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 11:39:17 -07:00
acenv.h
acpi.h x86/acpi, x86/boot: Take RSDP address for boot params if available 2018-10-10 10:44:22 +02:00
agp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
alternative-asm.h x86/nospec, objtool: Introduce ANNOTATE_IGNORE_ALTERNATIVE 2019-04-03 09:39:46 +02:00
alternative.h x86/nospec, objtool: Introduce ANNOTATE_IGNORE_ALTERNATIVE 2019-04-03 09:39:46 +02:00
amd_nb.h x86/amd_nb: Check vendor in AMD-only functions 2018-09-27 18:28:58 +02:00
apb_timer.h
apic_flat_64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
apic.h x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d 2018-08-05 09:53:13 +02:00
apicdef.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
apm.h x86/apm: Don't access __preempt_count with zeroed fs 2018-07-16 17:59:57 +02:00
arch_hweight.h x86: Use POPCNT mnemonics in arch_hweight.h 2018-11-05 10:42:32 +01:00
archrandom.h x86/asm: Remove unnecessary \n\t in front of CC_SET() from asm templates 2017-09-24 11:19:01 +02:00
asm-offsets.h
asm-prototypes.h x86/asm-prototypes: Remove duplicate include <asm/page.h> 2019-01-28 18:32:34 +01:00
asm.h x86/uaccess: Move copy_user_handle_tail() into asm 2019-04-03 09:36:29 +02:00
atomic64_32.h x86: Fix kernel-doc atomic.h warnings 2018-09-03 12:41:41 +02:00
atomic64_64.h x86/asm: 'Simplify' GEN_*_RMWcc() macros 2018-10-16 17:33:54 +02:00
atomic.h x86/asm: 'Simplify' GEN_*_RMWcc() macros 2018-10-16 17:33:54 +02:00
barrier.h x86/spectre_v1: Disable compiler optimizations over array_index_mask_nospec() 2018-06-21 16:00:21 +02:00
bios_ebda.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bitops.h x86/asm: Use stricter assembly constraints in bitops 2019-04-06 09:52:02 +02:00
boot.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bootparam_utils.h x86/boot: Clear RSDP address in boot_params for broken loaders 2018-12-03 11:56:37 +01:00
bug.h Revert "x86/bug: Macrofy the BUG table section handling, to work around GCC inlining bugs" 2018-12-19 12:00:00 +01:00
bugs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cache.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cacheflush.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cacheinfo.h x86/cpu: Get cache info and setup cache cpumap for Hygon Dhyana 2018-09-27 18:28:57 +02:00
calgary.h
ce4100.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checksum_32.h Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
checksum_64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checksum.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
clocksource.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmdline.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmpxchg_32.h locking/atomic/x86: Switch atomic.h to use atomic-instrumented.h 2018-03-12 12:15:35 +01:00
cmpxchg_64.h locking/atomics/x86: Reduce arch_cmpxchg64*() instrumentation 2018-07-25 11:53:58 +02:00
cmpxchg.h x86: Fix various typos in comments 2018-12-03 10:49:13 +01:00
compat.h x86/compat: Adjust in_compat_syscall() to generic code under !COMPAT 2018-11-01 12:59:25 +01:00
cpu_device_id.h x86/cpufeature: Fix various quality problems in the <asm/cpu_device_hd.h> header 2019-02-11 12:36:24 +01:00
cpu_entry_area.h x86/exceptions: Split debug IST stack 2019-04-17 15:14:28 +02:00
cpu.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cpufeature.h Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 15:32:35 -07:00
cpufeatures.h x86: Add TSX Force Abort CPUID/MSR 2019-03-06 09:25:41 +01:00
cpumask.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crash.h x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
current.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debugreg.h x86/exceptions: Split debug IST stack 2019-04-17 15:14:28 +02:00
delay.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
desc_defs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
desc.h x86/paravirt: Move the Xen-only pv_cpu_ops under the PARAVIRT_XXL umbrella 2018-09-03 16:50:36 +02:00
device.h x86/dma: Use generic swiotlb_ops 2018-03-20 10:01:57 +01:00
disabled-features.h x86/cpufeatures, x86/fault: Mark SMAP as disabled when configured out 2018-11-20 08:44:28 +01:00
div64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dma-direct.h dma/direct: Handle the memory encryption bit in common code 2018-03-20 10:01:59 +01:00
dma-mapping.h x86/pci-dma: switch the VIA 32-bit DMA quirk to use the struct device flag 2018-05-28 12:48:25 +02:00
dma.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dmi.h x86: Don't include linux/irq.h from asm/hardirq.h 2018-08-05 09:53:13 +02:00
dwarf2.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
edac.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
efi.h efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation 2019-02-04 08:27:30 +01:00
elf.h Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 15:24:22 +01:00
emergency-restart.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
entry_arch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
error-injection.h error-injection: Separate error-injection from kprobe 2018-01-12 17:33:38 -08:00
espfix.h init: Invoke init_espfix_bsp() from mm_init() 2017-12-22 20:13:05 +01:00
exec.h
extable.h x86/fault: Plumb error code and fault address through to fault handlers 2018-09-03 15:12:09 +02:00
fb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fixmap.h x86/alternatives: Use temporary mm for text poking 2019-04-30 12:37:52 +02:00
floppy.h
frame.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fsgsbase.h x86/fsgsbase/64: Fix the base write helper functions 2018-12-18 14:26:09 +01:00
ftrace.h x86/compat: Adjust in_compat_syscall() to generic code under !COMPAT 2018-11-01 12:59:25 +01:00
futex.h x86/extable: Introduce _ASM_EXTABLE_UA for uaccess fixups 2018-09-03 15:12:09 +02:00
gart.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
genapic.h
geode.h
hardirq.h x86: Don't include linux/irq.h from asm/hardirq.h 2018-08-05 09:53:13 +02:00
highmem.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hpet.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugetlb.h hugetlb: introduce generic version of huge_ptep_get 2018-10-26 16:26:34 -07:00
hw_breakpoint.h perf/hw_breakpoint: Remove default hw_breakpoint_arch_parse() 2018-06-26 09:07:58 +02:00
hw_irq.h x86/platform/uv/BAU: Add APIC idt entry 2018-03-28 10:40:55 +02:00
hyperv-tlfs.h x86/hyper-v: Fix definition of HV_MAX_FLUSH_REP_COUNT 2019-02-28 11:58:29 +01:00
hypervisor.h x86/jailhouse: Add infrastructure for running in non-root cell 2018-01-14 21:11:54 +01:00
i8259.h x86: i8259: Add missing include file 2018-08-15 13:44:10 -07:00
ia32_unistd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ia32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
imr.h
inat_types.h
inat.h x86/insn-eval: Add utility functions to get segment selector 2017-11-01 21:50:11 +01:00
init.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
insn-eval.h x86/umip: Fix insn_get_code_seg_params()'s return value 2017-11-23 20:17:59 +01:00
insn.h kprobes/x86: Prohibit probing on exception masking instructions 2018-05-13 19:52:55 +02:00
inst.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
intel_ds.h perf/x86/intel: Add Icelake support 2019-04-16 12:26:18 +02:00
intel_mid_vrtc.h x86: Convert x86_platform_ops to timespec64 2018-05-19 14:03:14 +02:00
intel_pconfig.h x86/pconfig: Provide defines and helper to run MKTME_KEY_PROG leaf 2018-03-12 12:10:54 +01:00
intel_pmc_ipc.h platform/x86: intel_pmc_ipc: Add read64 API 2017-11-27 13:39:11 +02:00
intel_pt.h perf/x86/intel/pt: add new capability for Intel PT 2018-12-21 11:28:33 +01:00
intel_punit_ipc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
intel_scu_ipc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
intel_telemetry.h
intel-family.h x86/CPU: Add Icelake model number 2019-02-14 13:18:30 +01:00
intel-mid.h x86/platform/intel-mid: Remove per platform code 2018-07-03 13:08:21 +02:00
invpcid.h x86/mm: Create asm/invpcid.h 2017-12-22 20:13:04 +01:00
io_apic.h x86/apic: Rename variables and functions related to x86_io_apic_ops 2018-02-17 11:47:45 +01:00
io.h x86/io: Remove useless definition of mmiowb() 2019-04-08 12:00:01 +01:00
iomap.h
iommu_table.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iommu.h x86/dma: Use DMA-direct (CONFIG_DMA_DIRECT_OPS=y) 2018-03-20 10:01:56 +01:00
iosf_mbi.h x86: baytrail/cherrytrail: Rework and move P-Unit PMIC bus semaphore code 2018-10-25 16:59:08 +02:00
ipi.h
irq_regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq_remapping.h iommu/vt-d: Relocate struct/function declarations to its header files 2018-09-25 14:33:43 +02:00
irq_vectors.h x86/irq: Fix outdated comments 2019-04-22 11:42:59 +02:00
irq_work.h x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
irq.h x86/irq/64: Init hardirq_stack_ptr during CPU hotplug 2019-04-17 15:34:21 +02:00
irqdomain.h genirq/irqdomain: Rename early argument of irq_domain_activate_irq() 2017-12-29 21:13:04 +01:00
irqflags.h x86/paravirt: Move the pv_irq_ops under the PARAVIRT_XXL umbrella 2018-09-03 16:50:36 +02:00
ist.h
jailhouse_para.h x86/jailhouse: Fix incorrect SPDX identifier 2018-04-23 10:17:28 +02:00
jump_label.h jump_label: move 'asm goto' support test to Kconfig 2019-01-06 09:46:51 +09:00
kasan.h kasan: clean up KASAN_SHADOW_SCALE_SHIFT usage 2018-02-06 18:32:43 -08:00
kaslr.h x86/mm: Make virtual memory layout dynamic for CONFIG_X86_5LEVEL=y 2018-02-14 13:11:13 +01:00
kbdleds.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kbuild arch: Use asm-generic header for asm/mmiowb.h 2019-04-08 11:59:43 +01:00
kdebug.h x86/process: Don't mix user/kernel regs in 64bit __show_regs() 2018-09-06 14:33:12 +02:00
kexec-bzimage64.h kexec_file,x86,powerpc: factor out kexec_file_ops functions 2018-04-13 17:10:27 -07:00
kexec.h treewide: remove current_text_addr 2018-10-31 08:54:12 -07:00
kgdb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kmap_types.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kprobes.h kprobes/x86: Don't call the ->break_handler() in x86 kprobes 2018-06-21 12:33:13 +02:00
kvm_emulate.h KVM: x86: Open code kvm_set_hflags 2019-04-16 15:37:36 +02:00
kvm_host.h x86/kvm/mmu: reset MMU context when 32-bit guest switches PAE 2019-04-30 21:03:58 +02:00
kvm_page_track.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kvm_para.h x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
kvm_vcpu_regs.h KVM: x86: Explicitly #define the VCPU_REGS_* indices 2019-02-20 22:47:38 +01:00
kvmclock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
linkage.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
livepatch.h
local64.h
local.h x86/asm: 'Simplify' GEN_*_RMWcc() macros 2018-10-16 17:33:54 +02:00
mach_timer.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach_traps.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
math_emu.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mc146818rtc.h x86: Convert x86_platform_ops to timespec64 2018-05-19 14:03:14 +02:00
mce.h x86/MCE: Group AMD function prototypes in <asm/mce.h> 2019-03-24 10:54:13 +01:00
mcsafe_test.h x86, nfit_test: Add unit test for memcpy_mcsafe() 2018-05-22 23:18:31 -07:00
mem_encrypt.h x86/mm: Add .bss..decrypted section to hold shared variables 2018-09-15 20:48:45 +02:00
microcode_amd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
microcode_intel.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
microcode.h Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-04-02 15:16:43 -07:00
misc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmconfig.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmu_context.h x86/mpx, mm/core: Fix recursive munmap() corruption 2019-05-09 10:37:17 +02:00
mmu.h x86/ldt: Rework locking 2017-12-22 20:13:01 +01:00
mmx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmzone_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmzone_64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmzone.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
module.h Merge commit 'upstream-x86-entry' into WIP.x86/mm 2017-12-17 12:58:53 +01:00
mpspec_def.h x86: Introduce and use MP IRQ trigger and polarity defines 2018-01-14 21:11:54 +01:00
mpspec.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mpx.h x86/mpx, mm/core: Fix recursive munmap() corruption 2019-05-09 10:37:17 +02:00
mshyperv.h x86/hyper-v: Add HvFlushGuestAddressList hypercall support 2018-12-21 11:28:39 +01:00
msi.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
msidef.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
msr-index.h perf/x86/intel: Support adaptive PEBS v4 2019-04-16 12:25:47 +02:00
msr-trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
msr.h x86/TSC: Use RDTSCP 2019-01-16 12:43:08 +01:00
mtrr.h
mwait.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nmi.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nops.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nospec-branch.h x86/nospec, objtool: Introduce ANNOTATE_IGNORE_ALTERNATIVE 2019-04-03 09:39:46 +02:00
numa_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
numa.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
olpc_ofw.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
olpc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
orc_lookup.h
orc_types.h x86/unwind/orc: Detect the end of the stack 2018-06-21 16:34:56 +02:00
page_32_types.h x86/irq/32: Define IRQ_STACK_SIZE 2019-04-17 15:18:36 +02:00
page_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
page_64_types.h x86/exceptions: Split debug IST stack 2019-04-17 15:14:28 +02:00
page_64.h Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-04-02 15:45:30 -07:00
page_types.h x86/mm: Decouple dynamic __PHYSICAL_MASK from AMD SME 2018-06-06 13:38:01 +02:00
page.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
paravirt_types.h mm: update ptep_modify_prot_start/commit to take vm_area_struct as arg 2019-03-05 21:07:18 -08:00
paravirt.h mm: update ptep_modify_prot_commit to take old pte value as arg 2019-03-05 21:07:18 -08:00
parport.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pat.h x86/mm: add a function to check if a pfn is UC/UC-/WC 2018-01-16 16:40:09 +01:00
pci_64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci_x86.h PCI/ACPI: Allow ACPI to be built without CONFIG_PCI set 2018-12-20 10:19:49 +01:00
pci-direct.h PCI: Make early dump functionality generic 2018-06-29 20:06:07 -05:00
pci-functions.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci.h mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
percpu.h x86/percpu: Fix this_cpu_read() 2018-10-14 11:11:22 +02:00
perf_event_p4.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf_event.h perf/x86: Make perf callchains work without CONFIG_FRAME_POINTER 2019-04-29 08:25:05 +02:00
pgalloc.h mm: treewide: remove unused address argument from pte_alloc functions 2019-01-04 13:13:47 -08:00
pgtable_32_types.h x86/ldt: Define LDT_END_ADDR 2018-07-20 01:11:47 +02:00
pgtable_32.h Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
pgtable_64_types.h x86/mm: Fix guard hole handling 2018-12-11 11:19:24 +01:00
pgtable_64.h mm/gup: Remove the 'write' parameter from gup_fast_permitted() 2019-02-11 08:20:40 +01:00
pgtable_types.h x86/mm/pageattr: Introduce helper function to unmap EFI boot services 2018-11-30 09:10:30 +01:00
pgtable-2level_types.h x86/pgtable: Move two more functions from pgtable_64.h to pgtable.h 2018-07-20 01:11:42 +02:00
pgtable-2level.h Revert "x86/mm/legacy: Populate the user page-table with user pgd's" 2018-09-14 17:08:45 +02:00
pgtable-3level_types.h x86/paravirt: Move items in pv_info under PARAVIRT_XXL umbrella 2018-09-03 16:50:36 +02:00
pgtable-3level.h x86/pae: use 64 bit atomic xchg function in native_ptep_get_and_clear 2018-08-27 14:20:49 -04:00
pgtable-invert.h x86/speculation/l1tf: Exempt zeroed PTEs from inversion 2018-08-17 10:27:36 -07:00
pgtable.h Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 16:13:31 -07:00
pkeys.h powerpc updates for 4.18 2018-06-07 10:23:33 -07:00
platform_sst_audio.h ASoC: Intel: sst: Free streams on suspend, re-alloc on resume 2018-03-01 16:22:48 +00:00
pm-trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
posix_types.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
preempt.h preempt: Move PREEMPT_NEED_RESCHED definition into arch code 2018-12-07 12:35:46 +00:00
probe_roms.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
processor-cyrix.h x86/cpu/cyrix: Remove {get,set}Cx86_old macros used for Cyrix processors 2019-03-21 12:28:50 +01:00
processor-flags.h x86/mm/pti: Define X86_CR3_PTI_PCID_USER_BIT on x86_32 2018-07-20 01:11:44 +02:00
processor.h x86/irq/64: Split the IRQ stack into its own pages 2019-04-17 15:37:02 +02:00
prom.h
proto.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pti.h x86/mm/pti: Introduce pti_finalize() 2018-07-20 01:11:45 +02:00
ptrace.h The biggest change here is the updates to kprobes 2018-10-30 09:49:56 -07:00
purgatory.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pvclock-abi.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pvclock.h x86: Convert x86_platform_ops to timespec64 2018-05-19 14:03:14 +02:00
qrwlock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qspinlock_paravirt.h locking/pvqspinlock/x86: Use LOCK_PREFIX in __pv_queued_spin_unlock() assembly code 2018-07-25 11:22:20 +02:00
qspinlock.h x86/qspinlock: Fix compile error 2018-11-04 00:54:34 +01:00
realmode.h x86/realmode: Make set_real_mode_mem() static inline 2019-03-29 10:16:27 +01:00
reboot_fixups.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
reboot.h x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
refcount.h refcount_t: Add ACQUIRE ordering on success for dec(sub)_and_test() variants 2019-02-04 09:03:31 +01:00
required-features.h x86/mm: Allow to boot without LA57 if CONFIG_X86_5LEVEL=y 2018-02-16 10:48:49 +01:00
resctrl_sched.h x86/resctrl: Avoid confusion over the new X86_RESCTRL config 2019-02-02 10:34:52 +01:00
rio.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rmwcc.h jump_label: move 'asm goto' support test to Kconfig 2019-01-06 09:46:51 +09:00
seccomp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sections.h x86/pti/64: Remove the SYSCALL64 entry trampoline 2018-09-12 21:33:53 +02:00
segment.h Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 17:54:58 +01:00
serial.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
set_memory.h x86/mm/cpa: Add set_direct_map_*() functions 2019-04-30 12:37:56 +02:00
setup_arch.h
setup.h x86/kernel: Fix more -Wmissing-prototypes warnings 2018-12-08 12:24:35 +01:00
shmparam.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sigcontext.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sigframe.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sighandling.h x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
signal.h x86/asm: Use CC_SET()/CC_OUT() in __gen_sigismember() 2018-08-30 13:02:31 +02:00
simd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
smap.h x86/smap: Ditch __stringify() 2019-04-03 11:02:24 +02:00
smp.h x86/irq/32: Handle irq stack allocation failure proper 2019-04-17 15:31:42 +02:00
sparsemem.h x86/mm: Stop pretending pgtable_l5_enabled is a variable 2018-05-19 11:56:57 +02:00
spec-ctrl.h x86/speculation: Prevent stale SPEC_CTRL msr content 2018-11-28 11:57:12 +01:00
special_insns.h x86/paravirt: Move the Xen-only pv_mmu_ops under the PARAVIRT_XXL umbrella 2018-09-03 16:50:37 +02:00
spinlock_types.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spinlock.h Merge branch 'linus' into locking/core, to resolve conflicts 2017-11-07 10:32:44 +01:00
sta2x11.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stackprotector.h x86/irq/64: Split the IRQ stack into its own pages 2019-04-17 15:37:02 +02:00
stacktrace.h Merge branch 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 15:56:41 -07:00
string_32.h x86/asm: Remove unused __constant_c_x_memset() macro and inlines 2019-01-12 17:54:49 +01:00
string_64.h x86/asm: Remove dead __GNUC__ conditionals 2019-01-12 17:50:48 +01:00
string.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
suspend_32.h x86-32/asm/power: Create stack frames in hibernate_asm_32.S 2018-10-03 11:56:33 +02:00
suspend_64.h x86/power: Make restore_processor_context() sane 2017-12-15 12:21:38 +01:00
suspend.h x86, hibernate: Rename temp_level4_pgt to temp_pgt 2018-10-03 11:56:34 +02:00
svm.h KVM/x86: Use SVM assembly instruction mnemonics instead of .byte streams 2018-12-21 11:28:44 +01:00
swiotlb.h x86/dma: Use generic swiotlb_ops 2018-03-20 10:01:57 +01:00
switch_to.h sched/x86_64: Don't save flags on context switch 2019-04-03 11:02:24 +02:00
sync_bitops.h x86/asm: Modernize sync_bitops.h 2019-04-10 09:53:31 +02:00
sync_core.h lockin/x86: Implement sync_core_before_usermode() 2018-02-05 21:34:57 +01:00
syscall_wrapper.h syscalls/x86: Adapt syscall_wrapper.h to the new syscall stub naming convention 2018-04-09 16:47:28 +02:00
syscall.h syscalls: Remove start and number from syscall_set_arguments() args 2019-04-05 09:27:23 -04:00
syscalls.h syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention 2018-04-09 16:47:28 +02:00
sysfb.h
tce.h
text-patching.h x86/alternatives: Remove the return value of text_poke_*() 2019-04-30 12:37:56 +02:00
thread_info.h x86/thread_info: Remove _TIF_ALLWORK_MASK 2018-12-03 19:00:28 +01:00
time.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
timer.h Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 19:07:38 -08:00
timex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tlb.h asm-generic/tlb, arch: Provide generic tlb_flush() based on flush_tlb_range() 2019-04-03 10:32:42 +02:00
tlbbatch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tlbflush.h Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 16:13:31 -07:00
topology.h x86/topology: Provide topology_smt_supported() 2018-06-21 14:20:57 +02:00
trace_clock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
traps.h x86/kernel: Fix more -Wmissing-prototypes warnings 2018-12-08 12:24:35 +01:00
tsc.h x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
uaccess_32.h x86/uaccess: Use __uaccess_begin_nospec() and uaccess_try_nospec 2018-01-30 21:54:31 +01:00
uaccess_64.h x86/uaccess: Move copy_user_handle_tail() into asm 2019-04-03 09:36:29 +02:00
uaccess.h Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 15:32:35 -07:00
umip.h x86/umip: Add emulation code for UMIP instructions 2017-11-08 11:16:22 +01:00
unaligned.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
unistd.h y2038: rename old time and utime syscalls 2019-02-07 00:13:28 +01:00
unwind_hints.h x86/unwind/orc: Detect the end of the stack 2018-06-21 16:34:56 +02:00
unwind.h x86/unwind: Handle NULL pointer calls better in frame unwinder 2019-03-06 23:03:26 +01:00
uprobes.h uprobes/x86: Emulate push insns for uprobe on x86 2017-12-11 18:42:11 +01:00
user32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
user_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
user_64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
user.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vdso.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vga.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vgtod.h Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 19:07:25 +01:00
virtext.h KVM updates for v4.20 2018-10-25 17:57:35 -07:00
vm86.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vmx.h KVM: x86: Add Intel PT virtualization work mode 2018-12-21 11:28:34 +01:00
vsyscall.h x86/pti: Map the vsyscall page if needed 2017-12-23 21:13:00 +01:00
vvar.h
word-at-a-time.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
x86_init.h x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header") 2018-11-20 09:43:10 +01:00
xor_32.h
xor_64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xor_avx.h
xor.h kmemcheck: remove annotations 2017-11-15 18:21:04 -08:00