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[Qemu-devel] [PATCH 7/7] KVM: MMU: stop using mmu_spte_get_lockless unde
From: |
guangrong . xiao |
Subject: |
[Qemu-devel] [PATCH 7/7] KVM: MMU: stop using mmu_spte_get_lockless under mmu-lock |
Date: |
Wed, 3 May 2017 18:52:24 +0800 |
From: Xiao Guangrong <address@hidden>
mmu_spte_age() is under the protection of mmu-lock, no reason to use
mmu_spte_get_lockless()
Signed-off-by: Xiao Guangrong <address@hidden>
---
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
- [Qemu-devel] [PATCH 0/7] KVM: MMU: fast write protect, guangrong . xiao, 2017/05/03
- [Qemu-devel] [PATCH 1/7] KVM: MMU: correct the behavior of mmu_spte_update_no_track, guangrong . xiao, 2017/05/03
- [Qemu-devel] [PATCH 2/7] KVM: MMU: introduce possible_writable_spte_bitmap, guangrong . xiao, 2017/05/03
- [Qemu-devel] [PATCH 4/7] KVM: MMU: enable KVM_WRITE_PROTECT_ALL_MEM, guangrong . xiao, 2017/05/03
- [Qemu-devel] [PATCH 3/7] KVM: MMU: introduce kvm_mmu_write_protect_all_pages, guangrong . xiao, 2017/05/03
- [Qemu-devel] [PATCH 5/7] KVM: MMU: allow dirty log without write protect, guangrong . xiao, 2017/05/03
- [Qemu-devel] [PATCH 6/7] KVM: MMU: clarify fast_pf_fix_direct_spte, guangrong . xiao, 2017/05/03
- [Qemu-devel] [PATCH 7/7] KVM: MMU: stop using mmu_spte_get_lockless under mmu-lock,
guangrong . xiao <=
- Re: [Qemu-devel] [PATCH 0/7] KVM: MMU: fast write protect, Paolo Bonzini, 2017/05/03
- Re: [Qemu-devel] [PATCH 0/7] KVM: MMU: fast write protect, Xiao Guangrong, 2017/05/03
- Re: [Qemu-devel] [PATCH 0/7] KVM: MMU: fast write protect, Paolo Bonzini, 2017/05/03
- Re: [Qemu-devel] [PATCH 0/7] KVM: MMU: fast write protect, Xiao Guangrong, 2017/05/03
- Re: [Qemu-devel] [PATCH 0/7] KVM: MMU: fast write protect, Paolo Bonzini, 2017/05/04
- Re: [Qemu-devel] [PATCH 0/7] KVM: MMU: fast write protect, Xiao Guangrong, 2017/05/22
- Re: [Qemu-devel] [PATCH 0/7] KVM: MMU: fast write protect, Paolo Bonzini, 2017/05/29