[PATCH -mm 6/6] xtensa: set ARCH_KMALLOC_MINALIGN
in [Kernel]
|
Prev: [PATCH -mm 4/6] mn10300: set ARCH_KMALLOC_MINALIGN
Next: [PATCH -mm 3/6] m68k: set ARCH_KMALLOC_MINALIGN
From: FUJITA Tomonori on 19 May 2010 23:30 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(a)lab.ntt.co.jp> Cc: Chris Zankel <chris(a)zankel.net> Cc: stable(a)kernel.org --- arch/xtensa/include/asm/cache.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/xtensa/include/asm/cache.h b/arch/xtensa/include/asm/cache.h index f04c989..ed8cd3c 100644 --- a/arch/xtensa/include/asm/cache.h +++ b/arch/xtensa/include/asm/cache.h @@ -29,5 +29,6 @@ # define CACHE_WAY_SIZE ICACHE_WAY_SIZE #endif +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES #endif /* _XTENSA_CACHE_H */ -- 1.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |