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authorVinayak Kale <vkale@apm.com>2014-02-05 09:34:36 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2014-02-05 10:26:35 +0000
commit5044bad43ee573d0b6d90e3ccb7a40c2c7d25eb4 (patch)
tree552f01828ccc178de0e29e4156592292f753f44d /arch/arm64
parent40507403485fcb56b83d6ddfc954e9b08305054c (diff)
downloadop-kernel-dev-5044bad43ee573d0b6d90e3ccb7a40c2c7d25eb4.zip
op-kernel-dev-5044bad43ee573d0b6d90e3ccb7a40c2c7d25eb4.tar.gz
arm64: add DSB after icache flush in __flush_icache_all()
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> Cc: <stable@vger.kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64')
-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 fea9ee3..88932498 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) \
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