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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2017-02-09 08:28:21 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-02-15 20:02:41 +1100 |
| commit | 438e69b52be776c035aa2a851ccc1709033d729b (patch) | |
| tree | 75de2889569b9abff35c564e47b003fa12bb2e6e /arch/powerpc | |
| parent | f4894b80b1ddfef00d4d2e5c58613ccef358a1b2 (diff) | |
| download | linux-438e69b52be776c035aa2a851ccc1709033d729b.tar.gz linux-438e69b52be776c035aa2a851ccc1709033d729b.tar.xz | |
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 <aneesh.kumar@linux.vnet.ibm.com>
Tested-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/radix.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h index 10a290094af4..9e0bb7cd6e22 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 */ |