Commit 5cfb1d5a authored Jun 24, 2012 by Michael S. Tsirkin Committed by Avi Kivity Jun 25, 2012

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>

parent c1af87dc

arch/x86/kvm/x86.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -5388,6 +5388,7 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
		if (unlikely(vcpu->arch.tsc_always_catchup))
		kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu);

		if (vcpu->arch.apic_attention)
		kvm_lapic_sync_from_vapic(vcpu);

		r = kvm_x86_ops->handle_exit(vcpu);