--- linux-2.4.27.orig/Documentation/kernel-parameters.txt	2004-08-07 19:26:04.000000000 -0400
+++ linux-2.4.27/Documentation/kernel-parameters.txt	2004-11-04 15:45:46.000000000 -0500
@@ -251,6 +251,10 @@
 
 	i810=		[HW,DRM]
 
+	ia64initpanic	[IA-64,KNL] Causes INIT# handler to call panic()
+			which connects to a notifier list and
+			machine_restart rather than spinning forever.
+
 	ibmmcascsi=	[HW,MCA,SCSI] IBM MicroChannel SCSI adapter.
 
 	icn=		[HW,ISDN]
--- linux-2.4.27.orig/arch/ia64/kernel/mca.c	2004-04-14 09:05:26.000000000 -0400
+++ linux-2.4.27/arch/ia64/kernel/mca.c	2004-11-04 15:45:46.000000000 -0500
@@ -425,6 +425,15 @@
 	PUT_NAT_BIT(sw->caller_unat, &pt->r30);	PUT_NAT_BIT(sw->caller_unat, &pt->r31);
 }
 
+static int ia64initpanic = 0;
+static int __init ia64initpanic_setup(char *str)
+{
+	printk(KERN_INFO "ia64: panic on INIT# interrupt\n");
+	ia64initpanic = 1;
+	return 1;
+}
+__setup("ia64initpanic", ia64initpanic_setup);
+
 static void
 init_handler_platform (pal_min_state_area_t *ms,
 		       struct pt_regs *pt, struct switch_stack *sw)
@@ -434,6 +443,13 @@
 	/* if a kernel debugger is available call it here else just dump the registers */
 
 	/*
+	 * if ia64initpanic is present on the cmdline,
+	 * panic so that we get to notifier_call_chain and restart
+	 */
+	if (ia64initpanic)
+		panic("INIT# received by processor %d", smp_processor_id());
+
+	/*
 	 * Wait for a bit.  On some machines (e.g., HP's zx2000 and zx6000, INIT can be
 	 * generated via the BMC's command-line interface, but since the console is on the
 	 * same serial line, the user will need some time to switch out of the BMC before