void kvm_s390_cmma_reset(void) { int rc; struct kvm_device_attr attr = { .group = KVM_S390_VM_MEM_CTRL, .attr = KVM_S390_VM_MEM_CLR_CMMA, }; if (mem_path || !kvm_s390_cmma_available()) { return; } rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); trace_kvm_clear_cmma(rc); }