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| author | Paul Mundt <lethal@linux-sh.org> | 2009-09-08 09:21:00 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-09-08 09:21:00 +0200 |
| commit | 6e4154d4c2dd3d7e61d19ddd2527322ce34c2f5a (patch) | |
| tree | 5c5eab6df31e0dedefc57eae22251267f234b08c /arch/sh/mm/kmap.c | |
| parent | sh: Fix up and optimize the kmap_coherent() interface. (diff) | |
| download | linux-6e4154d4c2dd3d7e61d19ddd2527322ce34c2f5a.tar.xz linux-6e4154d4c2dd3d7e61d19ddd2527322ce34c2f5a.zip | |
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.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/sh/mm/kmap.c b/arch/sh/mm/kmap.c index c52cd8c40a64..16e01b5fed04 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); } |