mirror of https://gitee.com/openkylin/linux.git
43 lines
890 B
C
43 lines
890 B
C
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/*
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* hibernate.c: Hibernaton support specific for sparc64.
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*
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* Copyright (C) 2013 Kirill V Tkhai (tkhai@yandex.ru)
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*/
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#include <linux/mm.h>
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#include <asm/hibernate.h>
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#include <asm/visasm.h>
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#include <asm/page.h>
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#include <asm/tlb.h>
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/* References to section boundaries */
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extern const void __nosave_begin, __nosave_end;
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struct saved_context saved_context;
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/*
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* pfn_is_nosave - check if given pfn is in the 'nosave' section
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*/
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int pfn_is_nosave(unsigned long pfn)
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{
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unsigned long nosave_begin_pfn = PFN_DOWN((unsigned long)&__nosave_begin);
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unsigned long nosave_end_pfn = PFN_DOWN((unsigned long)&__nosave_end);
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return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
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}
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void save_processor_state(void)
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{
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save_and_clear_fpu();
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}
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void restore_processor_state(void)
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{
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struct mm_struct *mm = current->active_mm;
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load_secondary_context(mm);
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tsb_context_switch(mm);
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}
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