1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Functions to retrieve information about the host system. 4 * 5 * Copyright (c) 2020 Red Hat Inc 6 * Copyright 2022 IBM Corp. 7 * 8 * Authors: 9 * Claudio Imbrenda <imbrenda@linux.ibm.com> 10 */ 11 12 #ifndef _S390X_HARDWARE_H_ 13 #define _S390X_HARDWARE_H_ 14 #include <asm/arch_def.h> 15 16 enum s390_host { 17 HOST_IS_UNKNOWN, 18 HOST_IS_LPAR, 19 HOST_IS_KVM, 20 HOST_IS_TCG 21 }; 22 23 enum s390_host detect_host(void); 24 25 static inline bool host_is_tcg(void) 26 { 27 return detect_host() == HOST_IS_TCG; 28 } 29 30 static inline bool host_is_kvm(void) 31 { 32 return detect_host() == HOST_IS_KVM; 33 } 34 35 static inline bool host_is_lpar(void) 36 { 37 return detect_host() == HOST_IS_LPAR; 38 } 39 40 #endif /* _S390X_HARDWARE_H_ */ 41