1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Common powerpc suspend code for 32 and 64 bits
4 *
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
6 */
7
8 #include <linux/sched.h>
9 #include <linux/suspend.h>
10 #include <asm/current.h>
11 #include <asm/mmu_context.h>
12 #include <asm/switch_to.h>
13
14 void save_processor_state(void)
15 {
16 /*
17 * flush out all the special registers so we don't need
18 * to save them in the snapshot
19 */
20 flush_all_to_thread(current);
21
22 #ifdef CONFIG_PPC64
23 hard_irq_disable();
24 #endif
25
26 }
27
28 void restore_processor_state(void)
29 {
30 #ifdef CONFIG_PPC32
31 switch_mmu_context(current->active_mm, current->active_mm, NULL);
32 #endif
33 }
34
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