KVM: x86: fix lapic_timer_int_injected with APIC-v

With APICv, LAPIC timer interrupt is always delivered via IRR:
apic_find_highest_irr syncs PIR to IRR.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/lapic.c

@@ -1086,14 +1086,14 @@ static bool lapic_timer_int_injected(struct kvm_vcpu *vcpu)
 
 	if (kvm_apic_hw_enabled(apic)) {
 		int vec = reg & APIC_VECTOR_MASK;
+		void *bitmap = apic->regs + APIC_ISR;
 
-		if (kvm_x86_ops->test_posted_interrupt)
-			return kvm_x86_ops->test_posted_interrupt(vcpu, vec);
-		else {
-			if (apic_test_vector(vec, apic->regs + APIC_ISR))
+		if (kvm_x86_ops->deliver_posted_interrupt)
+			bitmap = apic->regs + APIC_IRR;
+
+		if (apic_test_vector(vec, bitmap))
 			return true;
 	}
-	}
 	return false;
 }