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authorWill Deacon <will.deacon@arm.com>2012-12-04 12:57:11 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-12-07 11:49:06 +0000
commit39b175a0092d4a8e0875c67df82285475b1da591 (patch)
tree094700ff47598dd54cc903486ebf30534f965cd5 /arch/arm/kernel/entry-common.S
parente91b36efe51b5cbbfe5eb61a653cde5985ae8285 (diff)
downloadlinux-linaro-stable-39b175a0092d4a8e0875c67df82285475b1da591.tar.gz
ARM: 7593/1: nommu: do not enable DCACHE_WORD_ACCESS when !CONFIG_MMU
Commit b9a50f74905a ("ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for little-endian ARMv6+ CPUs") added support for word-at-time path comparisons, relying on the ability to perform unaligned loads with negligible performance impact in hardware. For nommu configurations without MPU support, this is unpredictable and so we should fall back to the byte-by-byte routines. Acked-by: Nicolas Pitre <nico@linaro.org> Tested-by: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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