KVM_LARCH_PMU
if (!(vcpu->arch.aux_inuse & KVM_LARCH_PMU))
vcpu->arch.aux_inuse &= ~KVM_LARCH_PMU;
vcpu->arch.aux_inuse |= KVM_LARCH_PMU;
if (vcpu->arch.aux_inuse & KVM_LARCH_PMU) {
return (vcpu && !(vcpu->arch.aux_inuse & KVM_LARCH_PMU));