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authorVinayak Kale <vkale@apm.com>2014-02-05 09:34:36 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-02-20 11:06:11 -0800
commit02599bad3774a5147eb8d98df7c9362fdc1a50c6 (patch)
tree458523d04c1bed7946300e56284bc873249568b0 /arch
parentfb569d15d867a06e89b1be8278404b6fbf6b5bde (diff)
downloadlinaro-lsk-02599bad3774a5147eb8d98df7c9362fdc1a50c6.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>
Diffstat (limited to 'arch')
-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 3300cbd18a8..0c13554965b 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) \