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 <asm/current.h> 14 #include <asm/mmu_context.h> 15 #include <asm/switch_to.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_all_to_thread(current); 24 25 #ifdef CONFIG_PPC64 26 hard_irq_disable(); 27 #endif 28 29 } 30 31 void restore_processor_state(void) 32 { 33 #ifdef CONFIG_PPC32 34 switch_mmu_context(current->active_mm, current->active_mm, NULL); 35 #endif 36 } 37