frv: 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>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/frv/include/asm/cache.h b/arch/frv/include/asm/cache.h
index 2797163..7dc0f0f 100644
--- a/arch/frv/include/asm/cache.h
+++ b/arch/frv/include/asm/cache.h
@@ -17,6 +17,8 @@
#define L1_CACHE_SHIFT (CONFIG_FRV_L1_CACHE_SHIFT)
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
+
#define __cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))
#define ____cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))
