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/suspend.h> 14 #include <asm/system.h> 15 #include <asm/current.h> 16 #include <asm/mmu_context.h> 17 save_processor_state(void)18void 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_fp_to_thread(current); 25 flush_altivec_to_thread(current); 26 flush_spe_to_thread(current); 27 28 #ifdef CONFIG_PPC64 29 hard_irq_disable(); 30 #endif 31 32 } 33 restore_processor_state(void)34void restore_processor_state(void) 35 { 36 #ifdef CONFIG_PPC32 37 switch_mmu_context(NULL, current->active_mm); 38 #endif 39 } 40