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| author | Michael S. Tsirkin <mst@redhat.com> | 2012-06-24 19:24:54 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-06-25 12:40:40 +0300 |
| commit | 5cfb1d5a65dd96d2d3a0751a1e4e81dc84c1f08f (patch) | |
| tree | ab6a7b70254a1813a64e97eaf58bc91e7a8a0a46 /arch/x86 | |
| parent | c1af87dc96cd0f8f17694d0cd9be01b80b2c7a6a (diff) | |
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')
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 6ed5983f78f..c1f870690a6 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: |