On 01/25/2018 03:20 PM, David Hildenbrand wrote: >> +void kvm_s390_gisa_init(struct kvm *kvm) >> +{ >> + if (1 || !css_general_characteristics.aiv) >> + kvm->arch.gisa = NULL; > > 1 || ... ? This will always trigger. -> gisa never active with this patch See patch 10.