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arm/highmem: flush tlb on unmap 

The tlb should be flushed on unmap and thus make the mapping entry
invalid. This is only done in the non-debug case which does not look
right.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
This commit is contained in:
Sebastian Andrzej Siewior 2013-03-11 21:37:27 +01:00 committed by Alibek Omarov
parent ebc1791957
commit 6f156f654f
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mm/highmem.c
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@ -95,10 +95,10 @@ void __kunmap_atomic(void *kvaddr)
__cpuc_flush_dcache_area((void *)vaddr, PAGE_SIZE);
#ifdef CONFIG_DEBUG_HIGHMEM
BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN + idx));
set_top_pte(vaddr, __pte(0));
#else
(void) idx; /* to kill a warning */
#endif
set_top_pte(vaddr, __pte(0));
kmap_atomic_idx_pop();
} else if (vaddr >= PKMAP_ADDR(0) && vaddr < PKMAP_ADDR(LAST_PKMAP)) {
/* this address was obtained through kmap_high_get() */