diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-05-24 17:32:58 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 11:07:02 -0400 |
| commit | 6cdafaae41d52e6ef9a5c5be23602ef083e4d0f9 (patch) | |
| tree | 49091924b0f72f2c91d31eed62b3344ad6bbeecb /arch/mn10300 | |
| parent | 366831615911c51596b2a9e1024a110a1d0939a1 (diff) | |
mn10300: 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>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
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>
Diffstat (limited to 'arch/mn10300')
| -rw-r--r-- | arch/mn10300/include/asm/cache.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mn10300/include/asm/cache.h b/arch/mn10300/include/asm/cache.h index e03cfa2e997e..6e2fe28dde4e 100644 --- a/arch/mn10300/include/asm/cache.h +++ b/arch/mn10300/include/asm/cache.h | |||
| @@ -21,6 +21,8 @@ | |||
| 21 | #define L1_CACHE_DISPARITY L1_CACHE_NENTRIES * L1_CACHE_BYTES | 21 | #define L1_CACHE_DISPARITY L1_CACHE_NENTRIES * L1_CACHE_BYTES |
| 22 | #endif | 22 | #endif |
| 23 | 23 | ||
| 24 | #define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES | ||
| 25 | |||
| 24 | /* data cache purge registers | 26 | /* data cache purge registers |
| 25 | * - read from the register to unconditionally purge that cache line | 27 | * - read from the register to unconditionally purge that cache line |
| 26 | * - write address & 0xffffff00 to conditionally purge that cache line | 28 | * - write address & 0xffffff00 to conditionally purge that cache line |