2 * Copyright 2001-2003 Pavel Machek <pavel@suse.cz>
4 * Copyright 2001 Patrick Mochel <mochel@osdl.org>
6 #ifndef _ASM_X86_SUSPEND_64_H
7 #define _ASM_X86_SUSPEND_64_H
10 #include <asm/fpu/api.h>
13 * Image of the saved processor state, used by the low level ACPI suspend to
14 * RAM code and by the low level hibernation code.
16 * If you modify it, fix arch/x86/kernel/acpi/wakeup_64.S and make sure that
17 * __save/__restore_processor_state(), defined in arch/x86/kernel/suspend_64.c,
18 * still work as required.
20 struct saved_context {
24 * User CS and SS are saved in current_pt_regs(). The rest of the
25 * segment selectors need to be saved and restored here.
30 * Usermode FSBASE and GSBASE may not match the fs and gs selectors,
31 * so we save them separately. We save the kernelmode GSBASE to
32 * restore percpu access after resume.
34 unsigned long kernelmode_gs_base, usermode_gs_base, fs_base;
36 unsigned long cr0, cr2, cr3, cr4, cr8;
38 bool misc_enable_saved;
39 struct saved_msrs saved_msrs;
41 u16 gdt_pad; /* Unused */
42 struct desc_ptr gdt_desc;
49 unsigned long return_address;
50 } __attribute__((packed));
52 #define loaddebug(thread,register) \
53 set_debugreg((thread)->debugreg##register, register)
55 /* routines for saving/restoring kernel state */
56 extern char core_restore_code[];
57 extern char restore_registers[];
59 #endif /* _ASM_X86_SUSPEND_64_H */