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bdde6b3c TK |
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> | |
7f8998c7 | 12 | #include <asm/sections.h> |
bdde6b3c TK |
13 | #include <asm/tlb.h> |
14 | ||
bdde6b3c TK |
15 | struct saved_context saved_context; |
16 | ||
17 | /* | |
18 | * pfn_is_nosave - check if given pfn is in the 'nosave' section | |
19 | */ | |
20 | ||
21 | int 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 | ||
29 | void save_processor_state(void) | |
30 | { | |
31 | save_and_clear_fpu(); | |
32 | } | |
33 | ||
34 | void 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 | } |