From 5a6099346c41792f1ba23aea6f74ad816e7fecd4 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Wed, 25 Jul 2018 23:58:06 +1000 Subject: [PATCH] powerpc/64s/radix: tlb do not flush on page size when fullmm When the mm is being torn down there will be a full PID flush so there is no need to flush the TLB on page size changes. Signed-off-by: Nicholas Piggin Reviewed-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/tlb.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/include/asm/tlb.h b/arch/powerpc/include/asm/tlb.h index 6d2ba7c779dc..97ecef697e1b 100644 --- a/arch/powerpc/include/asm/tlb.h +++ b/arch/powerpc/include/asm/tlb.h @@ -49,6 +49,9 @@ static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb, unsigned int page_size) { + if (tlb->fullmm) + return; + if (!tlb->page_size) tlb->page_size = page_size; else if (tlb->page_size != page_size) { -- 2.11.0