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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7f8998c7ae
The different architectures used their own (and different) declarations:
extern __visible const void __nosave_begin, __nosave_end;
extern const void __nosave_begin, __nosave_end;
extern long __nosave_begin, __nosave_end;
Consolidate them using the first variant in <asm/sections.h>.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
41 lines
828 B
C
41 lines
828 B
C
/*
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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/sections.h>
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#include <asm/tlb.h>
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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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