提交 7896bfa4 编写于 作者: F FUJITA Tomonori 提交者: Linus Torvalds

dma-mapping: parisc: set ARCH_DMA_MINALIGN

Architectures that handle DMA-non-coherent memory need to set
ARCH_DMA_MINALIGN to make sure that kmalloc'ed buffer is DMA-safe: the
buffer doesn't share a cache with the others.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Helge Deller <deller@gmx.de>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 4565f017
......@@ -28,6 +28,8 @@
#define SMP_CACHE_BYTES L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
#define __read_mostly __attribute__((__section__(".data..read_mostly")))
void parisc_cache_init(void); /* initializes cache-flushing */
......
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