| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 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> |
| 13 | #include <linux/suspend.h> |
| 14 | #include <asm/current.h> |
| 15 | #include <asm/mmu_context.h> |
| 16 | #include <asm/switch_to.h> |
| 17 | |
| 18 | void save_processor_state(void) |
| 19 | { |
| 20 | /* |
| 21 | * flush out all the special registers so we don't need |
| 22 | * to save them in the snapshot |
| 23 | */ |
| 24 | flush_all_to_thread(current); |
| 25 | |
| 26 | #ifdef CONFIG_PPC64 |
| 27 | hard_irq_disable(); |
| 28 | #endif |
| 29 | |
| 30 | } |
| 31 | |
| 32 | void restore_processor_state(void) |
| 33 | { |
| 34 | #ifdef CONFIG_PPC32 |
| 35 | switch_mmu_context(current->active_mm, current->active_mm, NULL); |
| 36 | #endif |
| 37 | } |