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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2010-05-23 19:38:14 +0200
committerGeert Uytterhoeven <geert@linux-m68k.org>2010-05-26 19:51:06 +0200
commitdd6c26a66bdc629a500174ffe73b010b070b9f1b (patch)
tree0168e8a4a2916eebb1d15e32bc09626d37fedb4f /arch/m68k
parentb417b717093085e45867770b29b9a97692cf132a (diff)
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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>
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/include/asm/cache.h2
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