| Date | Thu, 01 Jul 2010 10:31:29 -0700 | From | Greg KH <> | Subject | [patch 063/149] m68k: set ARCH_KMALLOC_MINALIGN |
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2.6.32-stable review patch. If anyone has any objections, please let us know.
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From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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>
--- arch/m68k/include/asm/cache.h | 2 ++ 1 file changed, 2 insertions(+)
--- 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
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