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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-05-24 14:32:58 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-07-05 11:10:47 -0700 |
| commit | ead5b24302a1f014de1206f6bc77f081d261803d (patch) | |
| tree | 592bed1a452449d8173549a90bcf158660a1188f /arch/mn10300 | |
| parent | 423ad7df30f57b0cb4bdad5d1504e2cdc1c4d8a3 (diff) | |
| download | lwn-ead5b24302a1f014de1206f6bc77f081d261803d.tar.gz lwn-ead5b24302a1f014de1206f6bc77f081d261803d.zip | |
mn10300: set ARCH_KMALLOC_MINALIGN
commit 6cdafaae41d52e6ef9a5c5be23602ef083e4d0f9 upstream.
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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 @@ #define L1_CACHE_DISPARITY L1_CACHE_NENTRIES * L1_CACHE_BYTES #endif +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES + /* data cache purge registers * - read from the register to unconditionally purge that cache line * - write address & 0xffffff00 to conditionally purge that cache line |