Commit e6b1185f authored Dec 17, 2015 by Ashok Kumar Committed by Will Deacon Dec 17, 2015

arm64: Defer dcache flush in __cpu_copy_user_page



Defer dcache flushing to __sync_icache_dcache by calling
flush_dcache_page which clears PG_dcache_clean flag.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ashok Kumar <ashoks@broadcom.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

parent 971c67ce

arch/arm64/mm/copypage.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -24,8 +24,9 @@

		void __cpu_copy_user_page(void kto, const void kfrom, unsigned long vaddr)
		{
		struct page *page = virt_to_page(kto);
		copy_page(kto, kfrom);
		__flush_dcache_area(kto, PAGE_SIZE);
		flush_dcache_page(page);
		}
		EXPORT_SYMBOL_GPL(__cpu_copy_user_page);