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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2008-06-23 17:04:25 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-07-20 11:42:36 +0200 |
| commit | f8b78fa3d406f3a2dc038e2b47749013a9295994 (patch) | |
| tree | b46e062f5e9b527983ea2c4446e5d3ecc5d023fa /arch | |
| parent | KVM: VMX: Fake emulate Intel perfctr MSRs (diff) | |
| download | linux-f8b78fa3d406f3a2dc038e2b47749013a9295994.tar.xz linux-f8b78fa3d406f3a2dc038e2b47749013a9295994.zip | |
KVM: move slots_lock acquision down to vapic_exit
There is no need to grab slots_lock if the vapic_page will not
be touched.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/x86.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f726ba79fd3a..55906e4c4676 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2787,8 +2787,10 @@ static void vapic_exit(struct kvm_vcpu *vcpu) if (!apic || !apic->vapic_addr) return; + down_read(&vcpu->kvm->slots_lock); kvm_release_page_dirty(apic->vapic_page); mark_page_dirty(vcpu->kvm, apic->vapic_addr >> PAGE_SHIFT); + up_read(&vcpu->kvm->slots_lock); } static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) @@ -2944,9 +2946,7 @@ out: post_kvm_run_save(vcpu, kvm_run); - down_read(&vcpu->kvm->slots_lock); vapic_exit(vcpu); - up_read(&vcpu->kvm->slots_lock); return r; } |