2 * Architecture specific (x86_64) functions for kexec based crash dumps.
4 * Created by: Hariprasad Nellitheertha (hari@in.ibm.com)
6 * Copyright (C) IBM Corporation, 2004. All rights reserved.
10 #include <linux/init.h>
11 #include <linux/types.h>
12 #include <linux/kernel.h>
13 #include <linux/smp.h>
14 #include <linux/irq.h>
15 #include <linux/reboot.h>
16 #include <linux/kexec.h>
18 #include <asm/processor.h>
19 #include <asm/hardirq.h>
21 #include <asm/hw_irq.h>
23 #define MAX_NOTE_BYTES 1024
24 typedef u32 note_buf_t[MAX_NOTE_BYTES/4];
26 note_buf_t crash_notes[NR_CPUS];
28 void machine_crash_shutdown(void)
30 /* This function is only called after the system
31 * has paniced or is otherwise in a critical state.
32 * The minimum amount of code to allow a kexec'd kernel
33 * to run successfully needs to happen here.
35 * In practice this means shooting down the other cpus in