1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Suspend support specific for power.
 4 *
 
 
 5 * Copyright (c) 2002 Pavel Machek <pavel@ucw.cz>
 6 * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org>
 7 */
 8
 9#include <linux/mm.h>
10#include <linux/suspend.h>
11#include <asm/page.h>
12#include <asm/sections.h>
 
 
13
14/*
15 *	pfn_is_nosave - check if given pfn is in the 'nosave' section
16 */
17
18int pfn_is_nosave(unsigned long pfn)
19{
20	unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
21	unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
22	return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
23}

 
 1/*
 2 * Suspend support specific for power.
 3 *
 4 * Distribute under GPLv2
 5 *
 6 * Copyright (c) 2002 Pavel Machek <pavel@ucw.cz>
 7 * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org>
 8 */
 9
10#include <linux/mm.h>
 
11#include <asm/page.h>
12
13/* References to section boundaries */
14extern const void __nosave_begin, __nosave_end;
15
16/*
17 *	pfn_is_nosave - check if given pfn is in the 'nosave' section
18 */
19
20int pfn_is_nosave(unsigned long pfn)
21{
22	unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
23	unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
24	return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
25}