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* Copyright 2001-2003 Pavel Machek <>
* Based on code
* Copyright 2001 Patrick Mochel <>
#ifndef __ASM_X86_64_SUSPEND_H
#define __ASM_X86_64_SUSPEND_H
#include <asm/desc.h>
#include <asm/i387.h>
static inline int arch_prepare_suspend(void)
return 0;
* Image of the saved processor state, used by the low level ACPI suspend to
* RAM code and by the low level hibernation code.
* If you modify it, fix arch/x86/kernel/acpi/wakeup_64.S and make sure that
* __save/__restore_processor_state(), defined in arch/x86/kernel/suspend_64.c,
* still work as required.
struct saved_context {
struct pt_regs regs;
u16 ds, es, fs, gs, ss;
unsigned long gs_base, gs_kernel_base, fs_base;
unsigned long cr0, cr2, cr3, cr4, cr8;
unsigned long efer;
u16 gdt_pad;
u16 gdt_limit;
unsigned long gdt_base;
u16 idt_pad;
u16 idt_limit;
unsigned long idt_base;
u16 ldt;
u16 tss;
unsigned long tr;
unsigned long safety;
unsigned long return_address;
} __attribute__((packed));
#define loaddebug(thread,register) \
set_debugreg((thread)->debugreg##register, register)
/* routines for saving/restoring kernel state */
extern int acpi_save_state_mem(void);
extern char core_restore_code;
extern char restore_registers;
#endif /* __ASM_X86_64_SUSPEND_H */