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authorPaul Mundt <lethal@linux-sh.org>2009-09-08 16:21:00 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-09-08 16:21:00 +0900
commit6e4154d4c2dd3d7e61d19ddd2527322ce34c2f5a (patch)
tree5c5eab6df31e0dedefc57eae22251267f234b08c /arch/sh/mm/kmap.c
parent0906a3ad33a254094fb74828e3ddb9af8771a6da (diff)
sh: Use more aggressive dcache purging in kmap teardown.
This fixes up a number of outstanding issues observed with old mappings on the same colour hanging around. This requires some more optimal handling, but is a safe fallback until all of the corner cases have been handled. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm/kmap.c')
-rw-r--r--arch/sh/mm/kmap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/sh/mm/kmap.c b/arch/sh/mm/kmap.c
index c52cd8c40a6..16e01b5fed0 100644
--- a/arch/sh/mm/kmap.c
+++ b/arch/sh/mm/kmap.c
@@ -54,6 +54,9 @@ void kunmap_coherent(void *kvaddr)
unsigned long vaddr = (unsigned long)kvaddr & PAGE_MASK;
enum fixed_addresses idx = __virt_to_fix(vaddr);
+ /* XXX.. Kill this later, here for sanity at the moment.. */
+ __flush_purge_region((void *)vaddr, PAGE_SIZE);
+
pte_clear(&init_mm, vaddr, kmap_coherent_pte - idx);
local_flush_tlb_one(get_asid(), vaddr);
}