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arm64: tlb: remove redundant barrier from __flush_tlb_pgtable

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__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 <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Will Deacon 2015-10-06 18:46:29 +01:00 committed by Catalin Marinas
parent 38d9628750
commit 28c6fbc3b4
1 changed files with 0 additions and 1 deletions
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arch/arm64/include/asm/tlbflush.h
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@ -163,7 +163,6 @@ static inline void __flush_tlb_pgtable(struct mm_struct *mm,
{ {
unsigned long addr = uaddr >> 12 | (ASID(mm) << 48); unsigned long addr = uaddr >> 12 | (ASID(mm) << 48);
dsb(ishst);
asm("tlbi vae1is, %0" : : "r" (addr)); asm("tlbi vae1is, %0" : : "r" (addr));
dsb(ish); dsb(ish);
} }