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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 11:13:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 11:13:33 -0700
commit229993001282e128a49a59ec43d255614775703a (patch)
tree0d8b3ab03d5dd8d34cae9bffaedcf835a6055473 /arch/x86/mm
parent7687b80a4f5a178fe292d071c91ebf273ebe12db (diff)
parentfd0f5869724ff6195c6e7f12f8287c66a132e0ba (diff)
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/mm changes from Ingo Molnar: "The biggest change is new TLB partial flushing code for AMD CPUs. (The v3.6 kernel had the Intel CPU side code, see commits e0ba94f14f74..effee4b9b3b.) There's also various other refinements around the TLB flush code" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Distinguish TLB shootdown interrupts from other functions call interrupts x86/mm: Fix range check in tlbflush debugfs interface x86, cpu: Preset default tlb_flushall_shift on AMD x86, cpu: Add AMD TLB size detection x86, cpu: Push TLB detection CPUID check down x86, cpu: Fixup tlb_flushall_shift formatting
Diffstat (limited to 'arch/x86/mm')
-rw-r--r--arch/x86/mm/tlb.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 613cd83e8c0c..0777f042e400 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -98,6 +98,8 @@ static void flush_tlb_func(void *info)
{
struct flush_tlb_info *f = info;
+ inc_irq_stat(irq_tlb_count);
+
if (f->flush_mm != this_cpu_read(cpu_tlbstate.active_mm))
return;
@@ -320,7 +322,7 @@ static ssize_t tlbflush_write_file(struct file *file,
if (kstrtos8(buf, 0, &shift))
return -EINVAL;
- if (shift > 64)
+ if (shift < -1 || shift >= BITS_PER_LONG)
return -EINVAL;
tlb_flushall_shift = shift;