mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
85a0e75397
Save/restore MISC_ENABLE register on suspend/resume. This fixes OOPS (invalid opcode) on resume from STR on Asus P4P800-VM, which wakes up with MWAIT disabled. Fixes https://bugzilla.kernel.org/show_bug.cgi?id=15385 Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Tested-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: H. Peter Anvin <hpa@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
|
|
* 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/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;
|
|
u64 misc_enable;
|
|
bool misc_enable_saved;
|
|
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_SUSPEND_64_H */
|