KVM_LARCH_SWCSR_LATEST
if (vcpu->arch.aux_inuse & KVM_LARCH_SWCSR_LATEST)
vcpu->arch.aux_inuse |= KVM_LARCH_SWCSR_LATEST;
vcpu->arch.aux_inuse &= ~KVM_LARCH_SWCSR_LATEST;
vcpu->arch.aux_inuse &= ~KVM_LARCH_SWCSR_LATEST;