[mirror_ubuntu-bionic-kernel.git] / arch / x86 / include / asm / livepatch.h

/*
 * 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/ftrace.h>

static inline int klp_check_compiler_support(void)
{
#ifndef CC_USING_FENTRY
	return 1;
#endif
	return 0;
}

static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)
{
	regs->ip = ip;
}

#endif /* _ASM_X86_LIVEPATCH_H */
Commit	Line	Data
b700e7f0 SJ	1	/*
	2	* livepatch.h - x86-specific Kernel Live Patching Core
	3	*
	4	* Copyright (C) 2014 Seth Jennings <sjenning@redhat.com>
	5	* Copyright (C) 2014 SUSE
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License
	9	* as published by the Free Software Foundation; either version 2
	10	* of the License, or (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	19	*/
	20
	21	#ifndef _ASM_X86_LIVEPATCH_H
	22	#define _ASM_X86_LIVEPATCH_H
	23
5d4351ba	24	#include <asm/setup.h>
b5bfc517	25	#include <linux/ftrace.h>
b700e7f0	26
b9dfe0be JK	27	static inline int klp_check_compiler_support(void)
b9dfe0be JK	28	{
b700e7f0	29	#ifndef CC_USING_FENTRY
b9dfe0be	30	return 1;
b700e7f0	31	#endif
b9dfe0be JK	32	return 0;
b9dfe0be JK	33	}
b700e7f0	34
b5bfc517 LB	35	static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)
	36	{
	37	regs->ip = ip;
	38	}
b700e7f0 SJ	39
b700e7f0 SJ	40	#endif /* _ASM_X86_LIVEPATCH_H */