Messages in this thread Patch in this message | | | From | FUJITA Tomonori <> | Subject | [PATCH -mm 3/6] m68k: set ARCH_KMALLOC_MINALIGN | Date | Thu, 20 May 2010 12:21:40 +0900 |
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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> Cc: stable@kernel.org --- 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 fed3fd3..ecafbe1 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 -- 1.6.5
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