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authorGleb Natapov <gleb@redhat.com>2013-10-01 12:58:36 -0400
committerGleb Natapov <gleb@redhat.com>2013-10-03 03:08:52 -0400
commita2ac07fe292ea41296049dfdbfeed203e2467ee7 (patch)
tree93f6f81ef917245073ffdbc89123dd74cd8ccdd4 /tools/perf/scripts/python/bin
parent517bf8fc211d37d3aa005fb35f9ee7f1d35cb860 (diff)
Fix NULL dereference in gfn_to_hva_prot()
gfn_to_memslot() can return NULL or invalid slot. We need to check slot validity before accessing it. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/bin')
0 files changed, 0 insertions, 0 deletions
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#ifndef _LINUX_APM_H
#define _LINUX_APM_H

/*
 * Include file for the interface to an APM BIOS
 * Copyright 1994-2001 Stephen Rothwell (sfr@canb.auug.org.au)
 *
 * 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, 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.
 */

#include <linux/types.h>

typedef unsigned short	apm_event_t;
typedef unsigned short	apm_eventinfo_t;

struct apm_bios_info {
	__u16	version;
	__u16	cseg;
	__u32	offset;
	__u16	cseg_16;
	__u16	dseg;
	__u16	flags;
	__u16	cseg_len;
	__u16	cseg_16_len;
	__u16	dseg_len;
};

#ifdef __KERNEL__

#define APM_CS		(GDT_ENTRY_APMBIOS_BASE * 8)
#define APM_CS_16	(APM_CS + 8)
#define APM_DS		(APM_CS_16 + 8)

/* Results of APM Installation Check */
#define APM_16_BIT_SUPPORT	0x0001
#define APM_32_BIT_SUPPORT	0x0002
#define APM_IDLE_SLOWS_CLOCK	0x0004
#define APM_BIOS_DISABLED      	0x0008
#define APM_BIOS_DISENGAGED     0x0010

/*
 * Data for APM that is persistent across module unload/load
 */
struct apm_info {
	struct apm_bios_info	bios;
	unsigned short		connection_version;
	int			get_power_status_broken;
	int			get_power_status_swabinminutes;
	int			allow_ints;
	int			forbid_idle;
	int			realmode_power_off;
	int			disabled;
};

/*
 * The APM function codes
 */
#define	APM_FUNC_INST_CHECK	0x5300
#define	APM_FUNC_REAL_CONN	0x5301
#define	APM_FUNC_16BIT_CONN	0x5302
#define	APM_FUNC_32BIT_CONN	0x5303
#define	APM_FUNC_DISCONN	0x5304
#define	APM_FUNC_IDLE		0x5305
#define	APM_FUNC_BUSY		0x5306
#define	APM_FUNC_SET_STATE	0x5307
#define	APM_FUNC_ENABLE_PM	0x5308
#define	APM_FUNC_RESTORE_BIOS	0x5309
#define	APM_FUNC_GET_STATUS	0x530a
#define	APM_FUNC_GET_EVENT	0x530b
#define	APM_FUNC_GET_STATE	0x530c
#define	APM_FUNC_ENABLE_DEV_PM	0x530d
#define	APM_FUNC_VERSION	0x530e
#define	APM_FUNC_ENGAGE_PM	0x530f
#define	APM_FUNC_GET_CAP	0x5310
#define	APM_FUNC_RESUME_TIMER	0x5311
#define	APM_FUNC_RESUME_ON_RING	0x5312
#define	APM_FUNC_TIMER		0x5313

/*
 * Function code for APM_FUNC_RESUME_TIMER
 */