mirror of
https://github.com/torvalds/linux
synced 2024-10-08 12:22:38 +00:00
1ccea77e2a
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details [based] [from] [clk] [highbank] [c] you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 355 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
40 lines
1 KiB
C
40 lines
1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* livepatch.h - powerpc-specific Kernel Live Patching Core
|
|
*
|
|
* Copyright (C) 2015-2016, SUSE, IBM Corp.
|
|
*/
|
|
#ifndef _ASM_POWERPC_LIVEPATCH_H
|
|
#define _ASM_POWERPC_LIVEPATCH_H
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/ftrace.h>
|
|
#include <linux/sched/task_stack.h>
|
|
|
|
#ifdef CONFIG_LIVEPATCH
|
|
static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)
|
|
{
|
|
regs->nip = ip;
|
|
}
|
|
|
|
#define klp_get_ftrace_location klp_get_ftrace_location
|
|
static inline unsigned long klp_get_ftrace_location(unsigned long faddr)
|
|
{
|
|
/*
|
|
* Live patch works only with -mprofile-kernel on PPC. In this case,
|
|
* the ftrace location is always within the first 16 bytes.
|
|
*/
|
|
return ftrace_location_range(faddr, faddr + 16);
|
|
}
|
|
|
|
static inline void klp_init_thread_info(struct task_struct *p)
|
|
{
|
|
/* + 1 to account for STACK_END_MAGIC */
|
|
task_thread_info(p)->livepatch_sp = end_of_stack(p) + 1;
|
|
}
|
|
#else
|
|
static inline void klp_init_thread_info(struct task_struct *p) { }
|
|
#endif /* CONFIG_LIVEPATCH */
|
|
|
|
#endif /* _ASM_POWERPC_LIVEPATCH_H */
|