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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-05-25 01:31:45 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 19:06:56 +0400 |
| commit | 498900fc9cd1adbad1ba6b55ed9d8f2f5d655ca3 (patch) | |
| tree | f99c1a1917f7d5f51977af9459bcc63d637ee209 | |
| parent | 7e125f7b9cbfce4101191b8076d606c517a73066 (diff) | |
| download | linux-498900fc9cd1adbad1ba6b55ed9d8f2f5d655ca3.tar.xz | |
xtensa: set ARCH_KMALLOC_MINALIGN
Architectures that handle DMA-non-coherent memory need to set
ARCH_KMALLOC_MINALIGN to make sure that kmalloc'ed buffer is DMA-safe: the
buffer doesn't share a cache with the others.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Chris Zankel <chris@zankel.net>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/xtensa/include/asm/cache.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/cache.h b/arch/xtensa/include/asm/cache.h index f04c9891142f..ed8cd3cbd499 100644 --- a/arch/xtensa/include/asm/cache.h +++ b/arch/xtensa/include/asm/cache.h @@ -29,5 +29,6 @@ # define CACHE_WAY_SIZE ICACHE_WAY_SIZE #endif +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES #endif /* _XTENSA_CACHE_H */ |