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arm64: kconfig: select HAVE_EFFICIENT_UNALIGNED_ACCESS

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ARMv8 CPUs can perform efficient unaligned memory accesses in hardware
and this feature is relied up on by code such as the dcache
word-at-a-time name hashing.

This patch selects HAVE_EFFICIENT_UNALIGNED_ACCESS for arm64.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 50afc33a90)
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Will Deacon
2013-12-16 17:50:08 +00:00
committed by Mark Brown
parent 43296ae8c7
commit e342d91c37
1 changed files with 1 additions and 0 deletions
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arch/arm64/Kconfig
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@@ -26,6 +26,7 @@ config ARM64
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
select HAVE_DMA_ATTRS
select HAVE_EFFICIENT_UNALIGNED_ACCESS
select HAVE_GENERIC_DMA_COHERENT
select HAVE_GENERIC_HARDIRQS
select HAVE_HW_BREAKPOINT if PERF_EVENTS