Rik van Riel 0f9a921cf9 x86: mm: only do a local tlb flush in ptep_set_access_flags() ...

The function ptep_set_access_flags() is only ever invoked to set access
flags or add write permission on a PTE.  The write bit is only ever set
together with the dirty bit.

Because we only ever upgrade a PTE, it is safe to skip flushing entries on
remote TLBs. The worst that can happen is a spurious page fault on other
CPUs, which would flush that TLB entry.

Lazily letting another CPU incur a spurious page fault occasionally is
(much!) cheaper than aggressively flushing everybody else's TLB.

Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Michel Lespinasse <walken@google.com>
Cc: Ingo Molnar <mingo@kernel.org>

2012-12-11 14:28:33 +00:00

..

kmemcheck

bug.h: add include of it to various implicit C users

2012-02-29 17:15:08 -05:00

amdtopology.c

x86, NUMA: Enable CONFIG_AMD_NUMA on 32bit too

2011-05-02 17:24:48 +02:00

dump_pagetables.c

…

extable.c

x86, extable: Switch to relative exception table entries

2012-04-20 17:22:34 -07:00

fault.c

readahead: fault retry breaks mmap file read random detection

2012-10-09 16:22:47 +09:00

gup.c

thp: add compound tail page _mapcount when mapped

2011-12-09 07:50:28 -08:00

highmem_32.c

highmem: kill all __kmap_atomic()

2012-03-20 21:48:30 +08:00

hugetlbpage.c

mm: replace vma prio_tree with an interval tree

2012-10-09 16:22:39 +09:00

init_32.c

Merge branch 'x86-smap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-10-01 13:59:17 -07:00

init_64.c

x86-64: Fix page table accounting

2012-10-24 10:50:25 +02:00

init.c

x86, mm: Undo incorrect revert in arch/x86/mm/init.c

2012-10-25 15:45:45 -07:00

iomap_32.c

…

ioremap.c

x86/mm: Fix some kernel-doc warnings

2012-06-11 10:54:45 +02:00

kmmio.c

…

Makefile

memblock, x86: Replace memblock_x86_reserve/free_range() with generic ones

2011-07-14 11:47:53 -07:00

memtest.c

memblock, x86: Replace memblock_x86_reserve/free_range() with generic ones

2011-07-14 11:47:53 -07:00

mmap.c

x86: Fix mmap random address range

2011-12-05 17:07:23 +01:00

mmio-mod.c

module_param: make bool parameters really bool (arch)

2012-01-13 09:32:18 +10:30

numa_32.c

memblock, x86: Replace memblock_x86_reserve/free_range() with generic ones

2011-07-14 11:47:53 -07:00

numa_64.c

memblock, x86: Make free_all_memory_core_early() explicitly free lowmem only

2011-07-14 11:47:49 -07:00

numa_emulation.c

x86: print physical addresses consistently with other parts of kernel

2012-05-29 16:22:21 -07:00

numa_internal.h

x86, NUMA: Initialize and use remap allocator from setup_node_bootmem()

2011-05-02 14:18:54 +02:00

numa.c

x86: print physical addresses consistently with other parts of kernel

2012-05-29 16:22:21 -07:00

pageattr-test.c

x86: Convert vmalloc()+memset() to vzalloc()

2011-05-28 19:53:57 +02:00

pageattr.c

Revert "x86-64/efi: Use EFI to deal with platform wall clock"

2012-08-14 09:58:25 -07:00

pat_internal.h

…

pat_rbtree.c

rbtree: move augmented rbtree functionality to rbtree_augmented.h

2012-10-09 16:22:40 +09:00

pat.c

mm, x86, pat: rework linear pfn-mmap tracking

2012-10-09 16:22:16 +09:00

pf_in.c

x86: Eliminate various 'set but not used' warnings

2011-05-21 19:10:33 +02:00

pf_in.h

…

pgtable_32.c

Disintegrate asm/system.h for X86

2012-03-28 18:11:12 +01:00

pgtable.c

x86: mm: only do a local tlb flush in ptep_set_access_flags()

2012-12-11 14:28:33 +00:00

physaddr.c

…

physaddr.h

…

setup_nx.c

…

srat.c

ACPI: Only count valid srat memory structures

2012-08-03 00:15:53 -04:00

testmmiotrace.c

…

tlb.c

x86: Distinguish TLB shootdown interrupts from other functions call interrupts

2012-09-27 22:52:34 -07:00