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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>
44 lines
859 B
C
44 lines
859 B
C
/*
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* Suspend support specific for mips.
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*
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* Licensed under the GPLv2
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*
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* Copyright (C) 2009 Lemote Inc.
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* Author: Hu Hongbing <huhb@lemote.com>
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* Wu Zhangjin <wuzhangjin@gmail.com>
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*/
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#include <asm/sections.h>
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#include <asm/fpu.h>
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#include <asm/dsp.h>
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static u32 saved_status;
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struct pt_regs saved_regs;
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void save_processor_state(void)
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{
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saved_status = read_c0_status();
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if (is_fpu_owner())
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save_fp(current);
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if (cpu_has_dsp)
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save_dsp(current);
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}
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void restore_processor_state(void)
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{
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write_c0_status(saved_status);
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if (is_fpu_owner())
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restore_fp(current);
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if (cpu_has_dsp)
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restore_dsp(current);
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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(__pa(&__nosave_begin));
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unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end));
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return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
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}
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