kvm_apic_update_irr
EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_apic_update_irr);
bool kvm_apic_update_irr(struct kvm_vcpu *vcpu, unsigned long *pir, int *max_irr);
max_irr_is_from_pir = kvm_apic_update_irr(vcpu, vt->pi_desc.pir,