Commit 5044bad4 authored by Vinayak Kale's avatar Vinayak Kale Committed by Catalin Marinas
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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: default avatarVinayak Kale <vkale@apm.com>
Acked-by: default avatarWill Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 40507403
...@@ -116,6 +116,7 @@ extern void flush_dcache_page(struct page *); ...@@ -116,6 +116,7 @@ extern void flush_dcache_page(struct page *);
static inline void __flush_icache_all(void) static inline void __flush_icache_all(void)
{ {
asm("ic ialluis"); asm("ic ialluis");
dsb();
} }
#define flush_dcache_mmap_lock(mapping) \ #define flush_dcache_mmap_lock(mapping) \
......
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