On 14.01.21 00:58, David Gibson wrote: [...] > +int s390_pv_init(ConfidentialGuestSupport *cgs, Error **errp) > +{ > + if (!object_dynamic_cast(OBJECT(cgs), TYPE_S390_PV_GUEST)) { > + return 0; > + } > + > + if (!s390_has_feat(S390_FEAT_UNPACK)) { > + error_setg(errp, > + "CPU model does not support Protected Virtualization"); > + return -1; > + } I am triggering this and I guess this is because the cpu model is not yet initialized at this point in time.