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