From 28c6fbc3b446caf5f8d1f2d7b79e09e743158a4d Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Tue, 6 Oct 2015 18:46:29 +0100 Subject: [PATCH] arm64: tlb: remove redundant barrier from __flush_tlb_pgtable __flush_tlb_pgtable is used to invalidate intermediate page table entries after they have been cleared and are about to be freed. Since pXd_clear imply memory barriers, we don't need the extra one here. Reviewed-by: Catalin Marinas Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/tlbflush.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h index 93e9f96..b460ae2 100644 --- a/arch/arm64/include/asm/tlbflush.h +++ b/arch/arm64/include/asm/tlbflush.h @@ -163,7 +163,6 @@ static inline void __flush_tlb_pgtable(struct mm_struct *mm, { unsigned long addr = uaddr >> 12 | (ASID(mm) << 48); - dsb(ishst); asm("tlbi vae1is, %0" : : "r" (addr)); dsb(ish); } -- 2.7.4