diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-05-23 19:38:14 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-07-05 11:10:48 -0700 |
| commit | 748ba59b943ea9f259866b3e703eec790cf48846 (patch) | |
| tree | 9a06243942972b0caaa3a946d7a061f6dd078cd0 /arch | |
| parent | ead5b24302a1f014de1206f6bc77f081d261803d (diff) | |
m68k: set ARCH_KMALLOC_MINALIGN
commit dd6c26a66bdc629a500174ffe73b010b070b9f1b 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>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/m68k/include/asm/cache.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h index fed3fd30de7..ecafbe1718c 100644 --- a/arch/m68k/include/asm/cache.h +++ b/arch/m68k/include/asm/cache.h @@ -8,4 +8,6 @@ #define L1_CACHE_SHIFT 4 #define L1_CACHE_BYTES (1<< L1_CACHE_SHIFT) +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES + #endif |