From 7efa1c87963d23cc57ba40c07316d3e28cc75a3a Mon Sep 17 00:00:00 2001
From: Alex Shi <alex.shi@intel.com>
Date: Fri, 20 Jul 2012 09:18:23 +0800
Subject: [PATCH] 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>
---
arch/x86/include/asm/tlbflush.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index b5a27bd77669a..74a44333545ab 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -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();
}
--
2.39.5