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Message-Id: <20100701173212.041589897@clark.site>
Date: Thu, 01 Jul 2010 10:31:28 -0700
From: Greg KH <gregkh@...e.de>
To: linux-kernel@...r.kernel.org, stable@...nel.org
Cc: stable-review@...nel.org, torvalds@...ux-foundation.org,
akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
David Howells <dhowells@...hat.com>,
Koichi Yasutake <yasutake.koichi@...panasonic.com>,
Pekka Enberg <penberg@...helsinki.fi>
Subject: [patch 062/149] mn10300: set ARCH_KMALLOC_MINALIGN
2.6.32-stable review patch. If anyone has any objections, please let us know.
------------------
From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
commit 6cdafaae41d52e6ef9a5c5be23602ef083e4d0f9 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@....ntt.co.jp>
Acked-by: David Howells <dhowells@...hat.com>
Cc: Koichi Yasutake <yasutake.koichi@...panasonic.com>
Acked-by: Pekka Enberg <penberg@...helsinki.fi>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
arch/mn10300/include/asm/cache.h | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/mn10300/include/asm/cache.h
+++ b/arch/mn10300/include/asm/cache.h
@@ -21,6 +21,8 @@
#define L1_CACHE_DISPARITY L1_CACHE_NENTRIES * L1_CACHE_BYTES
#endif
+#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
+
/* data cache purge registers
* - read from the register to unconditionally purge that cache line
* - write address & 0xffffff00 to conditionally purge that cache line
--
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