KVM_S390_UCAS_UNMAP 1264 include/uapi/linux/kvm.h #define KVM_S390_UCAS_UNMAP      _IOW(KVMIO, 0x51, struct kvm_s390_ucas_mapping)
KVM_S390_UCAS_UNMAP 1264 tools/include/uapi/linux/kvm.h #define KVM_S390_UCAS_UNMAP      _IOW(KVMIO, 0x51, struct kvm_s390_ucas_mapping)