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

From: guangrong . xiao
Date: Wed May 03 2017 - 06:54:12 EST


From: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxx>

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

Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxx>
---
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 f6a74e7..a8b91ee 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;
--
2.9.3