| From 6cdafaae41d52e6ef9a5c5be23602ef083e4d0f9 Mon Sep 17 00:00:00 2001 |
| From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> |
| Date: Mon, 24 May 2010 14:32:58 -0700 |
| Subject: mn10300: set ARCH_KMALLOC_MINALIGN |
| |
| 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 |
