1 /*
2  * livepatch.h - s390-specific Kernel Live Patching Core
3  *
4  *  Copyright (c) 2013-2015 SUSE
5  *   Authors: Jiri Kosina
6  *	      Vojtech Pavlik
7  *	      Jiri Slaby
8  */
9 
10 /*
11  * This program is free software; you can redistribute it and/or modify it
12  * under the terms of the GNU General Public License as published by the Free
13  * Software Foundation; either version 2 of the License, or (at your option)
14  * any later version.
15  */
16 
17 #ifndef ASM_LIVEPATCH_H
18 #define ASM_LIVEPATCH_H
19 
20 #include <linux/module.h>
21 
22 #ifdef CONFIG_LIVEPATCH
klp_check_compiler_support(void)23 static inline int klp_check_compiler_support(void)
24 {
25 	return 0;
26 }
27 
klp_write_module_reloc(struct module * mod,unsigned long type,unsigned long loc,unsigned long value)28 static inline int klp_write_module_reloc(struct module *mod, unsigned long
29 		type, unsigned long loc, unsigned long value)
30 {
31 	/* not supported yet */
32 	return -ENOSYS;
33 }
34 
klp_arch_set_pc(struct pt_regs * regs,unsigned long ip)35 static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)
36 {
37 	regs->psw.addr = ip;
38 }
39 #else
40 #error Live patching support is disabled; check CONFIG_LIVEPATCH
41 #endif
42 
43 #endif
44