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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2017-02-09 08:28:21 +0530
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-15 20:02:41 +1100
commit438e69b52be776c035aa2a851ccc1709033d729b (patch)
tree75de2889569b9abff35c564e47b003fa12bb2e6e /arch/powerpc/include
parentf4894b80b1ddfef00d4d2e5c58613ccef358a1b2 (diff)
downloadlinux-stericsson-438e69b52be776c035aa2a851ccc1709033d729b.tar.gz
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/include')
-rw-r--r--arch/powerpc/include/asm/book3s/64/radix.h3
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
*/