+static int kvm_s390_get_tod_high(struct kvm *kvm, struct kvm_device_attr *attr)
+{
+ u8 gtod_high = 0;
+
+ if (copy_to_user((void __user *)attr->addr, >od_high,
+ sizeof(gtod_high)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int kvm_s390_get_tod_low(struct kvm *kvm, struct kvm_device_attr *attr)
+{
+ u64 host_tod, gtod;
+ int r;
+
+ r = store_tod_clock(&host_tod);
+ if (r)
+ return r;
+
+ gtod = host_tod + kvm->arch.epoch;
+ if (copy_to_user((void __user *)attr->addr, >od, sizeof(gtod)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int kvm_s390_get_tod(struct kvm *kvm, struct kvm_device_attr *attr)
+{
+ int ret;
+
+ if (attr->flags)
+ return -EINVAL;
+
+ switch (attr->attr) {
+ case KVM_S390_VM_TOD_HIGH:
+ ret = kvm_s390_get_tod_high(kvm, attr);
+ break;
+ case KVM_S390_VM_TOD_LOW:
+ ret = kvm_s390_get_tod_low(kvm, attr);
+ break;
+ default:
+ ret = -ENXIO;
+ break;
+ }
+ return ret;
+}
+
+static int kvm_s390_set_processor(struct kvm *kvm, struct kvm_device_attr *attr)
+{
+ struct kvm_s390_vm_cpu_processor *proc;
+ int ret = 0;
+
+ mutex_lock(&kvm->lock);
+ if (atomic_read(&kvm->online_vcpus)) {
+ ret = -EBUSY;
+ goto out;
+ }
+ proc = kzalloc(sizeof(*proc), GFP_KERNEL);
+ if (!proc) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ if (!copy_from_user(proc, (void __user *)attr->addr,
+ sizeof(*proc))) {
+ memcpy(&kvm->arch.model.cpu_id, &proc->cpuid,
+ sizeof(struct cpuid));
+ kvm->arch.model.ibc = proc->ibc;
+ memcpy(kvm->arch.model.fac->kvm, proc->fac_list,
+ S390_ARCH_FAC_LIST_SIZE_BYTE);
+ } else
+ ret = -EFAULT;
+ kfree(proc);
+out:
+ mutex_unlock(&kvm->lock);
+ return ret;
+}
+
+static int kvm_s390_set_cpu_model(struct kvm *kvm, struct kvm_device_attr *attr)
+{
+ int ret = -ENXIO;
+
+ switch (attr->attr) {
+ case KVM_S390_VM_CPU_PROCESSOR:
+ ret = kvm_s390_set_processor(kvm, attr);
+ break;
+ }
+ return ret;
+}
+
+static int kvm_s390_get_processor(struct kvm *kvm, struct kvm_device_attr *attr)
+{
+ struct kvm_s390_vm_cpu_processor *proc;
+ int ret = 0;
+
+ proc = kzalloc(sizeof(*proc), GFP_KERNEL);
+ if (!proc) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ memcpy(&proc->cpuid, &kvm->arch.model.cpu_id, sizeof(struct cpuid));
+ proc->ibc = kvm->arch.model.ibc;
+ memcpy(&proc->fac_list, kvm->arch.model.fac->kvm, S390_ARCH_FAC_LIST_SIZE_BYTE);
+ if (copy_to_user((void __user *)attr->addr, proc, sizeof(*proc)))
+ ret = -EFAULT;
+ kfree(proc);
+out:
+ return ret;
+}
+
+static int kvm_s390_get_machine(struct kvm *kvm, struct kvm_device_attr *attr)
+{
+ struct kvm_s390_vm_cpu_machine *mach;
+ int ret = 0;
+
+ mach = kzalloc(sizeof(*mach), GFP_KERNEL);
+ if (!mach) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ get_cpu_id((struct cpuid *) &mach->cpuid);
+ mach->ibc = sclp_get_ibc();
+ memcpy(&mach->fac_mask, kvm_s390_fac_list_mask,
+ kvm_s390_fac_list_mask_size() * sizeof(u64));
+ memcpy((unsigned long *)&mach->fac_list, S390_lowcore.stfle_fac_list,
+ S390_ARCH_FAC_LIST_SIZE_U64);
+ if (copy_to_user((void __user *)attr->addr, mach, sizeof(*mach)))
+ ret = -EFAULT;
+ kfree(mach);
+out:
+ return ret;
+}
+
+static int kvm_s390_get_cpu_model(struct kvm *kvm, struct kvm_device_attr *attr)
+{
+ int ret = -ENXIO;
+
+ switch (attr->attr) {
+ case KVM_S390_VM_CPU_PROCESSOR:
+ ret = kvm_s390_get_processor(kvm, attr);
+ break;
+ case KVM_S390_VM_CPU_MACHINE:
+ ret = kvm_s390_get_machine(kvm, attr);
+ break;
+ }
+ return ret;
+}
+