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authorVinayak Kale <vkale@apm.com>2014-02-05 09:34:36 +0000
committerMark Brown <broonie@linaro.org>2014-05-14 12:18:43 +0100
commit891ed08e70ce022069af9b421b689db5b0cb66ae (patch)
treea23f5df6230182c71186717ae4f7d94902aa9680
parent1a94c46eed86275ee899eae5210dd14d4129a03a (diff)
downloadlinux-linaro-stable-891ed08e70ce022069af9b421b689db5b0cb66ae.tar.gz
arm64: add DSB after icache flush in __flush_icache_all()
commit 5044bad43ee573d0b6d90e3ccb7a40c2c7d25eb4 upstream. Add DSB after icache flush to complete the cache maintenance operation. The function __flush_icache_all() is used only for user space mappings and an ISB is not required because of an exception return before executing user instructions. An exception return would behave like an ISB. Signed-off-by: Vinayak Kale <vkale@apm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (cherry picked from commit 02599bad3774a5147eb8d98df7c9362fdc1a50c6) Signed-off-by: Mark Brown <broonie@linaro.org>
-rw-r--r--arch/arm64/include/asm/cacheflush.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h
index 3300cbd18a89..0c13554965b8 100644
--- a/arch/arm64/include/asm/cacheflush.h
+++ b/arch/arm64/include/asm/cacheflush.h
@@ -116,6 +116,7 @@ extern void flush_dcache_page(struct page *);
static inline void __flush_icache_all(void)
{
asm("ic ialluis");
+ dsb();
}
#define flush_dcache_mmap_lock(mapping) \