| Tkhai Kirill | bdde6b3 | 2013-03-19 15:11:07 +0000 | [diff] [blame] | 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> |
| Geert Uytterhoeven | 7f8998c | 2014-10-09 15:30:30 -0700 | [diff] [blame] | 12 | #include <asm/sections.h> |
| Tkhai Kirill | bdde6b3 | 2013-03-19 15:11:07 +0000 | [diff] [blame] | 13 | #include <asm/tlb.h> |
| 14 | |
| Tkhai Kirill | bdde6b3 | 2013-03-19 15:11:07 +0000 | [diff] [blame] | 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 | } |