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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-08-11 03:03:23 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 17:59:21 +0200 |
| commit | 7896bfa451b209f73bc8ec14721dcc2c5329a0a9 (patch) | |
| tree | c69a6b86bb74b697a9c8386d5f4d4091fc6242cf /arch/parisc | |
| parent | dma-mapping: unify dma_get_cache_alignment implementations (diff) | |
| download | linux-7896bfa451b209f73bc8ec14721dcc2c5329a0a9.tar.xz linux-7896bfa451b209f73bc8ec14721dcc2c5329a0a9.zip | |
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: FUJITA 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/include/asm/cache.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/cache.h b/arch/parisc/include/asm/cache.h index 45effe6978fa..039880e7d2c9 100644 --- a/arch/parisc/include/asm/cache.h +++ b/arch/parisc/include/asm/cache.h @@ -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 */ |