[linux-2.6-block.git] / arch / x86 / include / asm / suspend_64.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright 2001-2003 Pavel Machek <pavel@suse.cz>
 * Based on code
 * Copyright 2001 Patrick Mochel <mochel@osdl.org>
 */
#ifndef _ASM_X86_SUSPEND_64_H
#define _ASM_X86_SUSPEND_64_H

#include <asm/desc.h>
#include <asm/fpu/api.h>

/*
 * 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;

	/*
	 * User CS and SS are saved in current_pt_regs().  The rest of the
	 * segment selectors need to be saved and restored here.
	 */
	u16 ds, es, fs, gs;

	/*
	 * Usermode FSBASE and GSBASE may not match the fs and gs selectors,
	 * so we save them separately.  We save the kernelmode GSBASE to
	 * restore percpu access after resume.
	 */
	unsigned long kernelmode_gs_base, usermode_gs_base, fs_base;

	unsigned long cr0, cr2, cr3, cr4, cr8;
	u64 misc_enable;
	bool misc_enable_saved;
	struct saved_msrs saved_msrs;
	unsigned long efer;
	u16 gdt_pad; /* Unused */
	struct desc_ptr gdt_desc;
	u16 idt_pad;
	struct desc_ptr idt;
	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 char core_restore_code[];
extern char restore_registers[];

#endif /* _ASM_X86_SUSPEND_64_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	* Copyright 2001-2003 Pavel Machek <pavel@suse.cz>
	4	* Based on code
	5	* Copyright 2001 Patrick Mochel <mochel@osdl.org>
	6	*/
1965aae3 PA	7	#ifndef _ASM_X86_SUSPEND_64_H
1965aae3 PA	8	#define _ASM_X86_SUSPEND_64_H
0de80bcc	9
1da177e4	10	#include <asm/desc.h>
df6b35f4	11	#include <asm/fpu/api.h>
1da177e4	12
5c9c9bec RW	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	*/
1da177e4	21	struct saved_context {
0de80bcc	22	struct pt_regs regs;
7ee18d67 AL	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
8d783b3e	37	unsigned long cr0, cr2, cr3, cr4, cr8;
85a0e753 OZ	38	u64 misc_enable;
85a0e753 OZ	39	bool misc_enable_saved;
7a9c2dd0	40	struct saved_msrs saved_msrs;
3c321bce	41	unsigned long efer;
cc456c4e KRW	42	u16 gdt_pad; /* Unused */
cc456c4e KRW	43	struct desc_ptr gdt_desc;
1da177e4	44	u16 idt_pad;
090edbe2	45	struct desc_ptr idt;
1da177e4 LT	46	u16 ldt;
	47	u16 tss;
	48	unsigned long tr;
	49	unsigned long safety;
	50	unsigned long return_address;
1da177e4 LT	51	} __attribute__((packed));
1da177e4 LT	52
1da177e4	53	#define loaddebug(thread,register) \
2b514e74	54	set_debugreg((thread)->debugreg##register, register)
1da177e4	55
1da177e4	56	/* routines for saving/restoring kernel state */
c0944883 KC	57	extern char core_restore_code[];
c0944883 KC	58	extern char restore_registers[];
0de80bcc	59
1965aae3	60	#endif /* _ASM_X86_SUSPEND_64_H */