lkml.org 
[lkml]   [2010]   [May]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH -mm 3/6] m68k: 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: Geert Uytterhoeven <geert@linux-m68k.org>
    Cc: Roman Zippel <zippel@linux-m68k.org>
    Cc: stable@kernel.org
    ---
    arch/m68k/include/asm/cache.h | 2 ++
    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
    --
    1.6.5


    \
     
     \ /
      Last update: 2010-05-20 05:25    [W:0.019 / U:59.396 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site