From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] arm64: kconfig: select HAVE_EFFICIENT_UNALIGNED_ACCESS
Date: Tue, 17 Dec 2013 12:20:07 +0000 [thread overview]
Message-ID: <1387282807-6024-4-git-send-email-will.deacon@arm.com> (raw)
In-Reply-To: <1387282807-6024-1-git-send-email-will.deacon@arm.com>
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>
---
arch/arm64/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 435c9bc1c86c..cb9421b540c8 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -27,6 +27,7 @@ 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_HW_BREAKPOINT if PERF_EVENTS
select HAVE_MEMBLOCK
--
1.8.2.2
prev parent reply other threads:[~2013-12-17 12:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-17 12:20 [PATCH 1/4] arm64: use generic strnlen_user and strncpy_from_user functions Will Deacon
2013-12-17 12:20 ` [PATCH 2/4] arm64: futex: ensure .fixup entries are sufficiently aligned Will Deacon
2013-12-17 12:20 ` [PATCH 3/4] arm64: dcache: select DCACHE_WORD_ACCESS for little-endian CPUs Will Deacon
2013-12-17 12:20 ` Will Deacon [this message]
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