On 14.01.21 10:10, Christian Borntraeger wrote: > > > 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. > When I remove the check, things seems to work though ( I can access virtio-blk devices without specifying iommu for example)