Commit 21042d43 authored by Jiri Slaby's avatar Jiri Slaby Committed by Jiri Kosina
Browse files

livepatch: add support on s390 



This is a trivial port from kGraft. Module relocations are not supported yet.

Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
Acked-by: default avatarJosh Poimboeuf <jpoimboe@redhat.com>
Acked-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 2e3ac940

arch/s390/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -133,6 +133,7 @@ config S390 
	select HAVE_KPROBES

	select HAVE_KRETPROBES

	select HAVE_KVM if 64BIT

	select HAVE_LIVEPATCH

	select HAVE_MEMBLOCK

	select HAVE_MEMBLOCK_NODE_MAP

	select HAVE_MEMBLOCK_PHYS_MAP
@@ -160,6 +161,8 @@ source "init/Kconfig" 


source "kernel/Kconfig.freezer"



source "kernel/livepatch/Kconfig"



menu "Processor type and features"



config HAVE_MARCH_Z900_FEATURES

arch/s390/include/asm/livepatch.h

0 → 100644
+43 −0
Original line number Diff line number Diff line 
/*

 * livepatch.h - s390-specific Kernel Live Patching Core

 *

 *  Copyright (c) 2013-2015 SUSE

 *   Authors: Jiri Kosina

 *	      Vojtech Pavlik

 *	      Jiri Slaby

 */



/*

 * 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.

 */



#ifndef ASM_LIVEPATCH_H

#define ASM_LIVEPATCH_H



#include <linux/module.h>



#ifdef CONFIG_LIVEPATCH

static inline int klp_check_compiler_support(void)

{

	return 0;

}



static inline int klp_write_module_reloc(struct module *mod, unsigned long

		type, unsigned long loc, unsigned long value)

{

	/* not supported yet */

	return -ENOSYS;

}



static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)

{

	regs->psw.addr = ip;

}

#else

#error Live patching support is disabled; check CONFIG_LIVEPATCH

#endif



#endif