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[25/25] ARM: pm: ensure our temporary page table entry is removed from the TLB

Message ID E1QZpP6-0005o1-WB@rmk-PC.arm.linux.org.uk (mailing list archive)
State New, archived
Headers show

Commit Message

Russell King - ARM Linux June 23, 2011, 7:17 p.m. UTC
Ensure that our temporary page table entry is flushed from the TLB
before we resume normal operations.  This ensures that userspace
won't trip over the stale TLB entry.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/include/asm/suspend.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
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Patch

diff --git a/arch/arm/include/asm/suspend.h b/arch/arm/include/asm/suspend.h
index 8d5b446..f8db9d0 100644
--- a/arch/arm/include/asm/suspend.h
+++ b/arch/arm/include/asm/suspend.h
@@ -2,6 +2,7 @@ 
 #define __ASM_ARM_SUSPEND_H
 
 #include <asm/memory.h>
+#include <asm/tlbflush.h>
 
 extern void cpu_resume(void);
 
@@ -14,6 +15,7 @@  static inline void cpu_suspend(unsigned long arg, void (*fn)(unsigned long))
 	extern void __cpu_suspend(int, long, unsigned long,
 				  void (*)(unsigned long));
 	__cpu_suspend(0, PHYS_OFFSET - PAGE_OFFSET, arg, fn);
+	flush_tlb_all();
 }
 
 #endif