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m68k: set ARCH_KMALLOC_MINALIGN

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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 <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Roman Zippel <[email protected]>
Acked-by: Pekka Enberg <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Geert Uytterhoeven <[email protected]>
This commit is contained in:
FUJITA Tomonori 2010-05-23 19:38:14 +02:00 • committed by Geert Uytterhoeven
commit dd6c26a66b
1 changed files with 2 additions and 0 deletions
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2
arch/m68k/include/asm/cache.h
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@ -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