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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-05-23 19:38:14 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2010-05-26 19:51:06 +0200 |
| commit | dd6c26a66bdc629a500174ffe73b010b070b9f1b (patch) | |
| tree | 0168e8a4a2916eebb1d15e32bc09626d37fedb4f /arch/m68k/include | |
| parent | m68k: Enable atomic64_t (diff) | |
| download | linux-dd6c26a66bdc629a500174ffe73b010b070b9f1b.tar.xz linux-dd6c26a66bdc629a500174ffe73b010b070b9f1b.zip | |
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/m68k/include')
| -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 |