On 30.01.20 13:55, Janosch Frank wrote: > +static void kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu) > +{ > + /* Initial reset is a superset of the normal reset */ > + kvm_arch_vcpu_ioctl_normal_reset(vcpu); > + > + /* this equals initial cpu reset in pop, but we don't switch to ESA */ > + vcpu->arch.sie_block->gpsw.mask = 0; > + vcpu->arch.sie_block->gpsw.addr = 0; > + kvm_s390_set_prefix(vcpu, 0); > + kvm_s390_set_cpu_timer(vcpu, 0); > + vcpu->arch.sie_block->ckc = 0; > + vcpu->arch.sie_block->todpr = 0; > + memset(vcpu->arch.sie_block->gcr, 0, sizeof(vcpu->arch.sie_block->gcr)); > + vcpu->arch.sie_block->gcr[0] = CR0_INITIAL_MASK; > + vcpu->arch.sie_block->gcr[14] = CR14_INITIAL_MASK; > + vcpu->run->s.regs.fpc = 0; > + current->thread.fpu.fpc = 0; This is still wrong.