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Date: Thu, 01 Jul 2010 10:31:34 -0700 From: Greg KH <gregkh@...e.de> To: linux-kernel@...r.kernel.org, stable@...nel.org Cc: stable-review@...nel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>, Pekka Enberg <penberg@...helsinki.fi>, Mike Frysinger <vapier@...too.org> Subject: [patch 068/149] Blackfin: set ARCH_KMALLOC_MINALIGN 2.6.32-stable review patch. If anyone has any objections, please let us know. ------------------ From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> commit 76b99699a2bbf9efdb578f9a38a202af2ecb354b 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@....ntt.co.jp> Acked-by: Pekka Enberg <penberg@...helsinki.fi> Signed-off-by: Mike Frysinger <vapier@...too.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- arch/blackfin/include/asm/cache.h | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/blackfin/include/asm/cache.h +++ b/arch/blackfin/include/asm/cache.h @@ -15,6 +15,8 @@ #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) #define SMP_CACHE_BYTES L1_CACHE_BYTES +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES + #ifdef CONFIG_SMP #define __cacheline_aligned #else -- 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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