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Date: Thu, 20 May 2010 12:21:41 +0900 From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> To: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org Cc: davem@...emloft.net, dwmw2@...radead.org, FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>, David Howells <dhowells@...hat.com>, Koichi Yasutake <yasutake.koichi@...panasonic.com>, stable@...nel.org Subject: [PATCH -mm 4/6] mn10300: 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@....ntt.co.jp> Cc: David Howells <dhowells@...hat.com> Cc: Koichi Yasutake <yasutake.koichi@...panasonic.com> Cc: stable@...nel.org --- arch/mn10300/include/asm/cache.h | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/mn10300/include/asm/cache.h b/arch/mn10300/include/asm/cache.h index e03cfa2..6e2fe28 100644 --- a/arch/mn10300/include/asm/cache.h +++ b/arch/mn10300/include/asm/cache.h @@ -21,6 +21,8 @@ #define L1_CACHE_DISPARITY L1_CACHE_NENTRIES * L1_CACHE_BYTES #endif +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES + /* data cache purge registers * - read from the register to unconditionally purge that cache line * - write address & 0xffffff00 to conditionally purge that cache line -- 1.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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