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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: 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>
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@ -116,6 +116,7 @@ extern void flush_dcache_page(struct page *);
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static inline void __flush_icache_all(void)
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{
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asm("ic ialluis");
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dsb();
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}
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#define flush_dcache_mmap_lock(mapping) \
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