KVM: x86: properly restore LVT0

commit db1385624c686fe99fe2d1b61a36e1537b915d08 upstream.

Legacy NMI watchdog didn't work after migration/resume, because
vapics_in_nmi_mode was left at 0.

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[lizf: Backported to 3.4:
 - adjust context
 - s/kvm_apic_get_reg/apic_get_reg/]
Signed-off-by: Zefan Li <lizefan@huawei.com>

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index f935b52515bd2989e11c1b45f9b07dd0e6aa8fb5..53454a6775bf8b3e08a54f3772cc056e54ea7355 100644 (file)
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -1257,6 +1257,7 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu)
 
        apic_update_ppr(apic);
        hrtimer_cancel(&apic->lapic_timer.timer);
+       apic_manage_nmi_watchdog(apic, apic_get_reg(apic, APIC_LVT0));
        update_divide_count(apic);
        start_apic_timer(apic);
        apic->irr_pending = true;