[PATCH -mm 3/6] m68k: set ARCH_KMALLOC_MINALIGN

From: FUJITA Tomonori
Date: Wed May 19 2010 - 23:21:20 EST


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@xxxxxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxx
---
arch/m68k/include/asm/cache.h | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h
index fed3fd3..ecafbe1 100644
--- 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
--
1.6.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/