1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * livepatch.h - powerpc-specific Kernel Live Patching Core 4 * 5 * Copyright (C) 2015-2016, SUSE, IBM Corp. 6 */ 7 #ifndef _ASM_POWERPC_LIVEPATCH_H 8 #define _ASM_POWERPC_LIVEPATCH_H 9 10 #include <linux/module.h> 11 #include <linux/ftrace.h> 12 #include <linux/sched/task_stack.h> 13 14 #ifdef CONFIG_LIVEPATCH 15 static inline void klp_arch_set_pc(struct ftrace_regs *fregs, unsigned long ip) 16 { 17 ftrace_instruction_pointer_set(fregs, ip); 18 } 19 #endif /* CONFIG_LIVEPATCH */ 20 21 #ifdef CONFIG_LIVEPATCH_64 22 static inline void klp_init_thread_info(struct task_struct *p) 23 { 24 /* + 1 to account for STACK_END_MAGIC */ 25 task_thread_info(p)->livepatch_sp = end_of_stack(p) + 1; 26 } 27 #else 28 static inline void klp_init_thread_info(struct task_struct *p) { } 29 #endif 30 31 #endif /* _ASM_POWERPC_LIVEPATCH_H */ 32