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 */ 21 struct 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 */ 57 extern char core_restore_code[]; 58 extern char restore_registers[]; 59 60 #endif /* _ASM_X86_SUSPEND_64_H */ 61