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x86/tlb: Fix build warning and crash when building for !SMP 

The incompatible parameter of flush_tlb_mm_range cause build warning.
Fix it by correct parameter.

Ingo Molnar found that this could also cause a user space crash.

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Alex Shi <alex.shi@intel.com>
Link: http://lkml.kernel.org/r/1342747103-19765-1-git-send-email-alex.shi@intel.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Alex Shi 2012-07-20 09:18:23 +08:00 committed by H. Peter Anvin
parent effee4b9b3
commit 7efa1c8796
1 changed files with 2 additions and 2 deletions
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4
arch/x86/include/asm/tlbflush.h
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@ -105,10 +105,10 @@ static inline void flush_tlb_range(struct vm_area_struct *vma,
__flush_tlb();
}
static inline void flush_tlb_mm_range(struct vm_area_struct *vma,
static inline void flush_tlb_mm_range(struct mm_struct *mm,
unsigned long start, unsigned long end, unsigned long vmflag)
{
if (vma->vm_mm == current->active_mm)
if (mm == current->active_mm)
__flush_tlb();
}