Commit dd6c26a6 authored May 23, 2010 by FUJITA Tomonori Committed by Geert Uytterhoeven May 26, 2010

m68k: set ARCH_KMALLOC_MINALIGN

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>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

parent b417b717

arch/m68k/include/asm/cache.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -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