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748ba59b94
commit dd6c26a66b upstream.
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>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 lines
261 B
C
14 lines
261 B
C
/*
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* include/asm-m68k/cache.h
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*/
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#ifndef __ARCH_M68K_CACHE_H
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#define __ARCH_M68K_CACHE_H
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/* bytes per L1 cache line */
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#define L1_CACHE_SHIFT 4
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#define L1_CACHE_BYTES (1<< L1_CACHE_SHIFT)
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#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
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#endif
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