KVM: x86: properly restore LVT0

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

Cc: stable@vger.kernel.org
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 607a56b..e0f721b 100644 (file)
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -1822,6 +1822,7 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu,
        apic_update_ppr(apic);
        hrtimer_cancel(&apic->lapic_timer.timer);
        apic_update_lvtt(apic);
+       apic_manage_nmi_watchdog(apic, kvm_apic_get_reg(apic, APIC_LVT0));
        update_divide_count(apic);
        start_apic_timer(apic);
        apic->irr_pending = true;