| From dd6c26a66bdc629a500174ffe73b010b070b9f1b Mon Sep 17 00:00:00 2001 |
| From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> |
| Date: Sun, 23 May 2010 19:38:14 +0200 |
| Subject: m68k: set ARCH_KMALLOC_MINALIGN |
| |
| From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> |
| |
| commit dd6c26a66bdc629a500174ffe73b010b070b9f1b 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> |
| Cc: Geert Uytterhoeven <geert@linux-m68k.org> |
| Cc: Roman Zippel <zippel@linux-m68k.org> |
| Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| |
| --- |
| arch/m68k/include/asm/cache.h | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| --- a/arch/m68k/include/asm/cache.h |
| +++ b/arch/m68k/include/asm/cache.h |
| @@ -8,4 +8,6 @@ |
| #define L1_CACHE_SHIFT 4 |
| #define L1_CACHE_BYTES (1<< L1_CACHE_SHIFT) |
| |
| +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES |
| + |
| #endif |
