1/*
 2 * hibernate.c:  Hibernaton support specific for sparc64.
 3 *
 4 * Copyright (C) 2013 Kirill V Tkhai (tkhai@yandex.ru)
 5 */
 6
 7#include <linux/mm.h>
 8
 9#include <asm/hibernate.h>
10#include <asm/visasm.h>
11#include <asm/page.h>
12#include <asm/sections.h>
13#include <asm/tlb.h>
14
15struct saved_context saved_context;
16
17/*
18 *	pfn_is_nosave - check if given pfn is in the 'nosave' section
19 */
20
21int pfn_is_nosave(unsigned long pfn)
22{
23	unsigned long nosave_begin_pfn = PFN_DOWN((unsigned long)&__nosave_begin);
24	unsigned long nosave_end_pfn = PFN_DOWN((unsigned long)&__nosave_end);
25
26	return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
27}
28
29void save_processor_state(void)
30{
31	save_and_clear_fpu();
32}
33
34void restore_processor_state(void)
35{
36	struct mm_struct *mm = current->active_mm;
37
38	load_secondary_context(mm);
39	tsb_context_switch(mm);
40}