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ARM: pm: ensure our temporary page table entry is removed from the TLB

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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.

Tested-by: Kevin Hilman <khilman@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2011-06-23 14:24:09 +01:00
parent 2c74a0cefa
commit 0853f96f13
1 changed files with 2 additions and 0 deletions
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2
arch/arm/include/asm/suspend.h
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@ -2,6 +2,7 @@
#define __ASM_ARM_SUSPEND_H #define __ASM_ARM_SUSPEND_H
#include <asm/memory.h> #include <asm/memory.h>
#include <asm/tlbflush.h>
extern void cpu_resume(void); 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, extern void __cpu_suspend(int, long, unsigned long,
void (*)(unsigned long)); void (*)(unsigned long));
__cpu_suspend(0, PHYS_OFFSET - PAGE_OFFSET, arg, fn); __cpu_suspend(0, PHYS_OFFSET - PAGE_OFFSET, arg, fn);
flush_tlb_all();
} }
#endif #endif