[PATCH 2/2] KVM: LAPIC: Guarantee the timer is in tsc-deadline mode when setting

[Wanpeng Li]

From: Wanpeng Li <wanpengli@xxxxxxxxxxx>

Check apic_lvtt_tscdeadline() mode directly instead of apic_lvtt_oneshot()
and apic_lvtt_period() to guarantee the timer is in tsc-deadline mode when
wrmsr MSR_IA32_TSCDEADLINE.

Signed-off-by: Wanpeng Li <wanpengli@xxxxxxxxxxx>
---
 arch/x86/kvm/lapic.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index d89ab48..7b11fa8 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2193,8 +2193,8 @@ void kvm_set_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu, u64 data)
 {
 	struct kvm_lapic *apic = vcpu->arch.apic;
 
-	if (!kvm_apic_present(vcpu) || apic_lvtt_oneshot(apic) ||
-			apic_lvtt_period(apic))
+	if (!kvm_apic_present(vcpu) ||
+		!apic_lvtt_tscdeadline(apic))
 		return;
 
 	hrtimer_cancel(&apic->lapic_timer.timer);
-- 
2.7.4