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 } 38