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| author | Vinayak Kale <vkale@apm.com> | 2014-02-05 09:34:36 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-05-14 12:18:43 +0100 |
| commit | 891ed08e70ce022069af9b421b689db5b0cb66ae (patch) | |
| tree | a23f5df6230182c71186717ae4f7d94902aa9680 | |
| parent | 1a94c46eed86275ee899eae5210dd14d4129a03a (diff) | |
| download | linux-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.h | 1 |
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) \ |