1 /* 2 * hibernate.c: Hibernaton support specific for sparc64. 3 * 4 * Copyright (C) 2013 Kirill V Tkhai (tkhai@yandex.ru) 5 */ 6 7 #include <linux/mm.h> 8 9 #include <asm/hibernate.h> 10 #include <asm/visasm.h> 11 #include <asm/page.h> 12 #include <asm/sections.h> 13 #include <asm/tlb.h> 14 15 struct saved_context saved_context; 16 17 /* 18 * pfn_is_nosave - check if given pfn is in the 'nosave' section 19 */ 20 21 int pfn_is_nosave(unsigned long pfn) 22 { 23 unsigned long nosave_begin_pfn = PFN_DOWN((unsigned long)&__nosave_begin); 24 unsigned long nosave_end_pfn = PFN_DOWN((unsigned long)&__nosave_end); 25 26 return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn); 27 } 28 29 void save_processor_state(void) 30 { 31 save_and_clear_fpu(); 32 } 33 34 void restore_processor_state(void) 35 { 36 struct mm_struct *mm = current->active_mm; 37 38 load_secondary_context(mm); 39 tsb_context_switch(mm); 40 } 41