5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
41 lines
864 B
C
41 lines
864 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* 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/sections.h>
|
|
#include <asm/tlb.h>
|
|
|
|
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;
|
|
|
|
tsb_context_switch_ctx(mm, CTX_HWBITS(mm->context));
|
|
}
|