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be9c94dd JB |
1 | /* |
2 | * Common powerpc suspend code for 32 and 64 bits | |
3 | * | |
4 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/sched.h> | |
be9c94dd JB |
13 | #include <asm/system.h> |
14 | #include <asm/current.h> | |
15 | #include <asm/mmu_context.h> | |
16 | ||
17 | void save_processor_state(void) | |
18 | { | |
19 | /* | |
20 | * flush out all the special registers so we don't need | |
21 | * to save them in the snapshot | |
22 | */ | |
23 | flush_fp_to_thread(current); | |
24 | flush_altivec_to_thread(current); | |
25 | flush_spe_to_thread(current); | |
543b9fd3 JB |
26 | |
27 | #ifdef CONFIG_PPC64 | |
28 | hard_irq_disable(); | |
29 | #endif | |
30 | ||
be9c94dd JB |
31 | } |
32 | ||
33 | void restore_processor_state(void) | |
34 | { | |
35 | #ifdef CONFIG_PPC32 | |
5e696617 | 36 | switch_mmu_context(NULL, current->active_mm); |
be9c94dd JB |
37 | #endif |
38 | } |