| Date | Thu, 01 Jul 2010 10:34:17 -0700 | From | Greg KH <> | Subject | [patch 071/164] mn10300: set ARCH_KMALLOC_MINALIGN |
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2.6.33-stable review patch. If anyone has any objections, please let me know.
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From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
commit 6cdafaae41d52e6ef9a5c5be23602ef083e4d0f9 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> Acked-by: David Howells <dhowells@redhat.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- arch/mn10300/include/asm/cache.h | 2 ++ 1 file changed, 2 insertions(+)
--- 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
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