Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Copyright 2001-2003 Pavel Machek <pavel@suse.cz> |
| 4 | * Based on code |
| 5 | * Copyright 2001 Patrick Mochel <mochel@osdl.org> |
| 6 | */ |
H. Peter Anvin | 1965aae | 2008-10-22 22:26:29 -0700 | [diff] [blame] | 7 | #ifndef _ASM_X86_SUSPEND_64_H |
| 8 | #define _ASM_X86_SUSPEND_64_H |
Rafael J. Wysocki | 0de80bc | 2007-10-23 22:37:24 +0200 | [diff] [blame] | 9 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | #include <asm/desc.h> |
Ingo Molnar | df6b35f | 2015-04-24 02:46:00 +0200 | [diff] [blame] | 11 | #include <asm/fpu/api.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | |
Rafael J. Wysocki | 5c9c9be | 2008-01-30 13:30:04 +0100 | [diff] [blame] | 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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | struct saved_context { |
Rafael J. Wysocki | 0de80bc | 2007-10-23 22:37:24 +0200 | [diff] [blame] | 22 | struct pt_regs regs; |
Andy Lutomirski | 7ee18d6 | 2017-12-14 13:19:07 -0800 | [diff] [blame] | 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 | |
Pavel Machek | 8d783b3 | 2005-06-25 14:55:14 -0700 | [diff] [blame] | 37 | unsigned long cr0, cr2, cr3, cr4, cr8; |
Ondrej Zary | 85a0e753 | 2010-06-08 00:32:49 +0200 | [diff] [blame] | 38 | u64 misc_enable; |
| 39 | bool misc_enable_saved; |
Chen Yu | 7a9c2dd | 2015-11-25 01:03:41 +0800 | [diff] [blame] | 40 | struct saved_msrs saved_msrs; |
Vivek Goyal | 3c321bc | 2007-05-02 19:27:07 +0200 | [diff] [blame] | 41 | unsigned long efer; |
Konrad Rzeszutek Wilk | cc456c4 | 2013-05-01 21:53:30 -0400 | [diff] [blame] | 42 | u16 gdt_pad; /* Unused */ |
| 43 | struct desc_ptr gdt_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | u16 idt_pad; |
Andy Lutomirski | 090edbe | 2017-12-14 13:19:05 -0800 | [diff] [blame] | 45 | struct desc_ptr idt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | u16 ldt; |
| 47 | u16 tss; |
| 48 | unsigned long tr; |
| 49 | unsigned long safety; |
| 50 | unsigned long return_address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | } __attribute__((packed)); |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #define loaddebug(thread,register) \ |
Jan Beulich | 2b514e7 | 2006-03-25 16:29:22 +0100 | [diff] [blame] | 54 | set_debugreg((thread)->debugreg##register, register) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | /* routines for saving/restoring kernel state */ |
Kees Cook | c094488 | 2017-05-09 14:00:51 -0700 | [diff] [blame] | 57 | extern char core_restore_code[]; |
| 58 | extern char restore_registers[]; |
Rafael J. Wysocki | 0de80bc | 2007-10-23 22:37:24 +0200 | [diff] [blame] | 59 | |
H. Peter Anvin | 1965aae | 2008-10-22 22:26:29 -0700 | [diff] [blame] | 60 | #endif /* _ASM_X86_SUSPEND_64_H */ |