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authorMichael S. Tsirkin <mst@redhat.com>2012-06-24 19:24:54 +0300
committerAvi Kivity <avi@redhat.com>2012-06-25 12:40:40 +0300
commit5cfb1d5a65dd96d2d3a0751a1e4e81dc84c1f08f (patch)
treeab6a7b70254a1813a64e97eaf58bc91e7a8a0a46 /arch/x86/kvm/x86.c
parentc1af87dc96cd0f8f17694d0cd9be01b80b2c7a6a (diff)
downloadop-kernel-dev-5cfb1d5a65dd96d2d3a0751a1e4e81dc84c1f08f.zip
op-kernel-dev-5cfb1d5a65dd96d2d3a0751a1e4e81dc84c1f08f.tar.gz
KVM: only sync when attention bits set
Commit eb0dc6d0368072236dcd086d7fdc17fd3c4574d4 introduced apic attention bitmask but kvm still syncs lapic unconditionally. As that commit suggested and in anticipation of adding more attention bits, only sync lapic if(apic_attention). Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
-rw-r--r--arch/x86/kvm/x86.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 6ed5983..c1f8706 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5388,7 +5388,8 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
if (unlikely(vcpu->arch.tsc_always_catchup))
kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu);
- kvm_lapic_sync_from_vapic(vcpu);
+ if (vcpu->arch.apic_attention)
+ kvm_lapic_sync_from_vapic(vcpu);
r = kvm_x86_ops->handle_exit(vcpu);
out:
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