[POWERPC] Fix kmalloc alignment on non-coherent DMA platforms

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On platforms doing non-coherent DMA (4xx, 8xx, ...), it's important
that the kmalloc minimum alignment is set to the cache line size, to
avoid sharing cache lines between different objects, so that DMA to
one of the objects doesn't corrupt the other.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

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Benjamin Herrenschmidt 2007-11-19 19:25:06 +11:00 • committed by Paul Mackerras

parent f9b6c1de69

commit 52142e756e

1 changed files with 4 additions and 0 deletions

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include/asm-powerpc/page_32.h

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