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/*
* livepatch.h - x86-specific Kernel Live Patching Core
*
* Copyright (C) 2014 Seth Jennings <sjenning@redhat.com>
* Copyright (C) 2014 SUSE
*
* 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/>.
*/
#ifndef _ASM_X86_LIVEPATCH_H
#define _ASM_X86_LIVEPATCH_H
#include <asm/setup.h>
#include <linux/module.h>
#include <linux/ftrace.h>
#ifdef CONFIG_LIVEPATCH
static inline int klp_check_compiler_support(void)
{
#ifndef CC_USING_FENTRY
return 1;
#endif
return 0;
}
int klp_write_module_reloc(struct module *mod, unsigned long type,
unsigned long loc, unsigned long value);
static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)
{
regs->ip = ip;
}
#else
#error Live patching support is disabled; check CONFIG_LIVEPATCH
#endif
#endif /* _ASM_X86_LIVEPATCH_H */