LXR linux/arch/x86/include/asm/suspend

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright 2001-2003 Pavel Machek <pavel@suse.cz>
   4 * Based on code
   5 * Copyright 2001 Patrick Mochel <mochel@osdl.org>
   6 */
   7#ifndef _ASM_X86_SUSPEND_64_H
   8#define _ASM_X86_SUSPEND_64_H
   9
  10#include <asm/desc.h>
  11#include <asm/fpu/api.h>
  12
  13/*
  14 * Image of the saved processor state, used by the low level ACPI suspend to
  15 * RAM code and by the low level hibernation code.
  16 *
  17 * If you modify it, fix arch/x86/kernel/acpi/wakeup_64.S and make sure that
  18 * __save/__restore_processor_state(), defined in arch/x86/kernel/suspend_64.c,
  19 * still work as required.
  20 */
  21struct saved_context {
  22        struct pt_regs regs;
  23
  24        /*
  25         * User CS and SS are saved in current_pt_regs().  The rest of the
  26         * segment selectors need to be saved and restored here.
  27         */
  28        u16 ds, es, fs, gs;
  29
  30        /*
  31         * Usermode FSBASE and GSBASE may not match the fs and gs selectors,
  32         * so we save them separately.  We save the kernelmode GSBASE to
  33         * restore percpu access after resume.
  34         */
  35        unsigned long kernelmode_gs_base, usermode_gs_base, fs_base;
  36
  37        unsigned long cr0, cr2, cr3, cr4;
  38        u64 misc_enable;
  39        bool misc_enable_saved;
  40        struct saved_msrs saved_msrs;
  41        unsigned long efer;
  42        u16 gdt_pad; /* Unused */
  43        struct desc_ptr gdt_desc;
  44        u16 idt_pad;
  45        struct desc_ptr idt;
  46        u16 ldt;
  47        u16 tss;
  48        unsigned long tr;
  49        unsigned long safety;
  50        unsigned long return_address;
  51} __attribute__((packed));
  52
  53#define loaddebug(thread,register) \
  54        set_debugreg((thread)->debugreg##register, register)
  55
  56/* routines for saving/restoring kernel state */
  57extern char core_restore_code[];
  58extern char restore_registers[];
  59
  60#endif /* _ASM_X86_SUSPEND_64_H */
  61