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    Subject[PATCH -mm 6/6] xtensa: set ARCH_KMALLOC_MINALIGN
    Date
    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: Chris Zankel <chris@zankel.net>
    Cc: stable@kernel.org
    ---
    arch/xtensa/include/asm/cache.h | 1 +
    1 files changed, 1 insertions(+), 0 deletions(-)

    diff --git a/arch/xtensa/include/asm/cache.h b/arch/xtensa/include/asm/cache.h
    index f04c989..ed8cd3c 100644
    --- a/arch/xtensa/include/asm/cache.h
    +++ b/arch/xtensa/include/asm/cache.h
    @@ -29,5 +29,6 @@
    # define CACHE_WAY_SIZE ICACHE_WAY_SIZE
    #endif

    +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES

    #endif /* _XTENSA_CACHE_H */
    --
    1.6.5


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