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-rw-r--r--arch/powerpc/kernel/suspend.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/suspend.c b/arch/powerpc/kernel/suspend.c
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index 000000000000..8cee57107541
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+++ b/arch/powerpc/kernel/suspend.c
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1/*
2 * Suspend support specific for power.
3 *
4 * Distribute under GPLv2
5 *
6 * Copyright (c) 2002 Pavel Machek <pavel@suse.cz>
7 * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org>
8 */
9
10#include <asm/page.h>
11
12/* References to section boundaries */
13extern const void __nosave_begin, __nosave_end;
14
15/*
16 * pfn_is_nosave - check if given pfn is in the 'nosave' section
17 */
18
19int pfn_is_nosave(unsigned long pfn)
20{
21 unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
22 unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
23 return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
24}