mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-04 11:36:51 +07:00
c97102ba96
Commit 1b3a5d02ee ("reboot: move arch/x86 reboot= handling to generic
kernel") moved reboot= handling to generic code. In the process it also
removed the code in native_machine_shutdown() which are moving reboot
process to reboot_cpu/cpu0.
I guess that thought must have been that all reboot paths are calling
migrate_to_reboot_cpu(), so we don't need this special handling. But
kexec reboot path (kernel_kexec()) is not calling
migrate_to_reboot_cpu() so above change broke kexec. Now reboot can
happen on non-boot cpu and when INIT is sent in second kerneo to bring
up BP, it brings down the machine.
So start calling migrate_to_reboot_cpu() in kexec reboot path to avoid
this problem.
Bisected by WANG Chao.
Reported-by: Matthew Whitehead <mwhitehe@redhat.com>
Reported-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Tested-by: Baoquan He <bhe@redhat.com>
Tested-by: WANG Chao <chaowang@redhat.com>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
#ifndef _LINUX_REBOOT_H
|
|
#define _LINUX_REBOOT_H
|
|
|
|
|
|
#include <linux/notifier.h>
|
|
#include <uapi/linux/reboot.h>
|
|
|
|
#define SYS_DOWN 0x0001 /* Notify of system down */
|
|
#define SYS_RESTART SYS_DOWN
|
|
#define SYS_HALT 0x0002 /* Notify of system halt */
|
|
#define SYS_POWER_OFF 0x0003 /* Notify of system power off */
|
|
|
|
enum reboot_mode {
|
|
REBOOT_COLD = 0,
|
|
REBOOT_WARM,
|
|
REBOOT_HARD,
|
|
REBOOT_SOFT,
|
|
REBOOT_GPIO,
|
|
};
|
|
extern enum reboot_mode reboot_mode;
|
|
|
|
enum reboot_type {
|
|
BOOT_TRIPLE = 't',
|
|
BOOT_KBD = 'k',
|
|
BOOT_BIOS = 'b',
|
|
BOOT_ACPI = 'a',
|
|
BOOT_EFI = 'e',
|
|
BOOT_CF9 = 'p',
|
|
BOOT_CF9_COND = 'q',
|
|
};
|
|
extern enum reboot_type reboot_type;
|
|
|
|
extern int reboot_default;
|
|
extern int reboot_cpu;
|
|
extern int reboot_force;
|
|
|
|
|
|
extern int register_reboot_notifier(struct notifier_block *);
|
|
extern int unregister_reboot_notifier(struct notifier_block *);
|
|
|
|
|
|
/*
|
|
* Architecture-specific implementations of sys_reboot commands.
|
|
*/
|
|
|
|
extern void migrate_to_reboot_cpu(void);
|
|
extern void machine_restart(char *cmd);
|
|
extern void machine_halt(void);
|
|
extern void machine_power_off(void);
|
|
|
|
extern void machine_shutdown(void);
|
|
struct pt_regs;
|
|
extern void machine_crash_shutdown(struct pt_regs *);
|
|
|
|
/*
|
|
* Architecture independent implemenations of sys_reboot commands.
|
|
*/
|
|
|
|
extern void kernel_restart_prepare(char *cmd);
|
|
extern void kernel_restart(char *cmd);
|
|
extern void kernel_halt(void);
|
|
extern void kernel_power_off(void);
|
|
|
|
extern int C_A_D; /* for sysctl */
|
|
void ctrl_alt_del(void);
|
|
|
|
#define POWEROFF_CMD_PATH_LEN 256
|
|
extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN];
|
|
|
|
extern int orderly_poweroff(bool force);
|
|
|
|
/*
|
|
* Emergency restart, callable from an interrupt handler.
|
|
*/
|
|
|
|
extern void emergency_restart(void);
|
|
#include <asm/emergency-restart.h>
|
|
|
|
#endif /* _LINUX_REBOOT_H */
|