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