static void kvm_s390_enable_cmma(KVMState *s) { int rc; struct kvm_device_attr attr = { .group = KVM_S390_VM_MEM_CTRL, .attr = KVM_S390_VM_MEM_ENABLE_CMMA, }; if (kvm_s390_check_enable_cmma(s) || kvm_s390_check_clear_cmma(s)) { return; } rc = kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr); if (!rc) { qemu_register_reset(kvm_s390_clear_cmma_callback, s); } trace_kvm_enable_cmma(rc); }