From: Aneesh Kumar K.V Date: Thu, 9 Feb 2017 02:58:21 +0000 (+0530) Subject: powerpc/mm/radix: Skip ptesync in pte update helpers X-Git-Tag: v5.15~11761^2~41 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=438e69b52be776c035aa2a851ccc1709033d729b;p=platform%2Fkernel%2Flinux-starfive.git powerpc/mm/radix: Skip ptesync in pte update helpers We do them at the start of tlb flush, and we are sure a pte update will be followed by a tlbflush. Hence we can skip the ptesync in pte update helpers. Signed-off-by: Aneesh Kumar K.V Tested-by: Michael Neuling Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h index 10a2900..9e0bb7c 100644 --- a/arch/powerpc/include/asm/book3s/64/radix.h +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -144,13 +144,11 @@ static inline unsigned long radix__pte_update(struct mm_struct *mm, * new value of pte */ new_pte = (old_pte | set) & ~clr; - asm volatile("ptesync" : : : "memory"); radix__flush_tlb_pte_p9_dd1(old_pte, mm, addr); if (new_pte) __radix_pte_update(ptep, 0, new_pte); } else old_pte = __radix_pte_update(ptep, clr, set); - asm volatile("ptesync" : : : "memory"); if (!huge) assert_pte_locked(mm, addr); @@ -195,7 +193,6 @@ static inline void radix__ptep_set_access_flags(struct mm_struct *mm, unsigned long old_pte, new_pte; old_pte = __radix_pte_update(ptep, ~0, 0); - asm volatile("ptesync" : : : "memory"); /* * new value of pte */