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[PATCH v2 7/7] KVM: MMU: stop using mmu_spte_get_lockless under mmu-lock

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  [PATCH v2 7/7] KVM: MMU: stop using mmu_spte_get_lockless under mmu-lock guangrong.xiao@gmail.com - 2017-06-20 11:20 +0200

#1670488 — [PATCH v2 7/7] KVM: MMU: stop using mmu_spte_get_lockless under mmu-lock

From: Xiao Guangrong <xiaoguangrong@tencent.com>

mmu_spte_age() is under the protection of mmu-lock, no reason to use
mmu_spte_get_lockless()

Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com>
---
 arch/x86/kvm/mmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 7711953..dc00c32 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -852,7 +852,7 @@ static u64 restore_acc_track_spte(u64 spte)
 /* Returns the Accessed status of the PTE and resets it at the same time. */
 static bool mmu_spte_age(u64 *sptep)
 {
-	u64 spte = mmu_spte_get_lockless(sptep);
+	u64 spte = *sptep;
 
 	if (!is_accessed_spte(spte))
 		return false;
-- 
2.9.4

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