diff options
author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-05-23 19:38:14 +0200 |
---|---|---|
committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2010-05-24 23:07:59 +0200 |
commit | 8878a03909dc2f5837c874f7ebee5dfd6decbbcb (patch) | |
tree | adfb699bfb5074d46f3f6d5f5a241a4f7d542eb0 /arch | |
parent | e4ecc06d63564bd37dc37fab482d03646656b186 (diff) |
m68k: 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: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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 fed3fd30de7e..ecafbe1718c3 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 |