mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
8e5b2a3c5a
swsusp_arch_suspend() is callable non-leaf function which doesn't honor CONFIG_FRAME_POINTER, which can result in bad stack traces. Also it's not annotated as ELF callable function which can confuse tooling. Create a stack frame for it when CONFIG_FRAME_POINTER is enabled and give it proper ELF function annotation. Also in this patch introduces the restore_registers() symbol and gives it ELF function annotation, thus to prepare for later register restore. Analogous changes were made for 64bit before in commitef0f3ed5a4(x86/asm/power: Create stack frames in hibernate_asm_64.S) and commit4ce827b4cc(x86/power/64: Fix hibernation return address corruption). Signed-off-by: Zhimin Gu <kookoo.gu@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
40 lines
938 B
C
40 lines
938 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright 2001-2002 Pavel Machek <pavel@suse.cz>
|
|
* Based on code
|
|
* Copyright 2001 Patrick Mochel <mochel@osdl.org>
|
|
*/
|
|
#ifndef _ASM_X86_SUSPEND_32_H
|
|
#define _ASM_X86_SUSPEND_32_H
|
|
|
|
#include <asm/desc.h>
|
|
#include <asm/fpu/api.h>
|
|
|
|
/* image of the saved processor state */
|
|
struct saved_context {
|
|
/*
|
|
* On x86_32, all segment registers, with the possible exception of
|
|
* gs, are saved at kernel entry in pt_regs.
|
|
*/
|
|
#ifdef CONFIG_X86_32_LAZY_GS
|
|
u16 gs;
|
|
#endif
|
|
unsigned long cr0, cr2, cr3, cr4;
|
|
u64 misc_enable;
|
|
bool misc_enable_saved;
|
|
struct saved_msrs saved_msrs;
|
|
struct desc_ptr gdt_desc;
|
|
struct desc_ptr idt;
|
|
u16 ldt;
|
|
u16 tss;
|
|
unsigned long tr;
|
|
unsigned long safety;
|
|
unsigned long return_address;
|
|
} __attribute__((packed));
|
|
|
|
/* routines for saving/restoring kernel state */
|
|
extern char core_restore_code[];
|
|
extern char restore_registers[];
|
|
|
|
#endif /* _ASM_X86_SUSPEND_32_H */
|