diff -Naurp -X /home/jbarnes/dontdiff 002-2.6.0-ia64.patch/arch/ia64/kernel/time.c 040-timer-interrupt-additions.patch/arch/ia64/kernel/time.c
--- 002-2.6.0-ia64.patch/arch/ia64/kernel/time.c	Tue Jan 20 14:22:04 2004
+++ 040-timer-interrupt-additions.patch/arch/ia64/kernel/time.c	Tue Jan 20 14:24:42 2004
@@ -238,7 +238,7 @@ ia64_do_profile (struct pt_regs * regs)
 	atomic_inc((atomic_t *)&prof_buffer[ip]);
 }
 
-static irqreturn_t
+irqreturn_t
 timer_interrupt (int irq, void *dev_id, struct pt_regs *regs)
 {
 	unsigned long new_itm;
@@ -396,6 +396,12 @@ static struct irqaction timer_irqaction 
 void __init
 time_init (void)
 {
+	/* sn2 timer_interrupt wrapper */
+	if (ia64_platform_is("sn2")) {
+		extern irqreturn_t sn_timer_interrupt(int, void *, struct pt_regs *);
+		timer_irqaction.handler = sn_timer_interrupt;
+	}
+
 	register_percpu_irq(IA64_TIMER_VECTOR, &timer_irqaction);
 	efi_gettimeofday(&xtime);
 	ia64_init_itm();
diff -Naurp -X /home/jbarnes/dontdiff 002-2.6.0-ia64.patch/arch/ia64/sn/kernel/sn2/Makefile 040-timer-interrupt-additions.patch/arch/ia64/sn/kernel/sn2/Makefile
--- 002-2.6.0-ia64.patch/arch/ia64/sn/kernel/sn2/Makefile	Tue Jan 20 14:22:05 2004
+++ 040-timer-interrupt-additions.patch/arch/ia64/sn/kernel/sn2/Makefile	Tue Jan 20 14:24:42 2004
@@ -10,4 +10,4 @@
 #
 
 obj-y += cache.o io.o ptc_deadlock.o sn2_smp.o sn_proc_fs.o \
-	 prominfo_proc.o timer.o
+	 prominfo_proc.o timer.o timer_interrupt.o
diff -Naurp -X /home/jbarnes/dontdiff 002-2.6.0-ia64.patch/arch/ia64/sn/kernel/sn2/timer_interrupt.c 040-timer-interrupt-additions.patch/arch/ia64/sn/kernel/sn2/timer_interrupt.c
--- 002-2.6.0-ia64.patch/arch/ia64/sn/kernel/sn2/timer_interrupt.c	Wed Dec 31 16:00:00 1969
+++ 040-timer-interrupt-additions.patch/arch/ia64/sn/kernel/sn2/timer_interrupt.c	Tue Jan 20 14:24:42 2004
@@ -0,0 +1,65 @@
+/*
+ *
+ *
+ * Copyright (c) 2003 Silicon Graphics, Inc.  All Rights Reserved.
+ * 
+ * This program is free software; you can redistribute it and/or modify it 
+ * under the terms of version 2 of the GNU General Public License 
+ * as published by the Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it would be useful, but 
+ * WITHOUT ANY WARRANTY; without even the implied warranty of 
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+ * 
+ * Further, this software is distributed without any warranty that it is 
+ * free of the rightful claim of any third person regarding infringement 
+ * or the like.  Any license provided herein, whether implied or 
+ * otherwise, applies only to this software file.  Patent licenses, if 
+ * any, provided herein do not apply to combinations of this program with 
+ * other software, or any other product whatsoever.
+ * 
+ * You should have received a copy of the GNU General Public 
+ * License along with this program; if not, write the Free Software 
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ * 
+ * Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 
+ * Mountain View, CA  94043, or:
+ * 
+ * http://www.sgi.com 
+ * 
+ * For further information regarding this notice, see: 
+ * 
+ * http://oss.sgi.com/projects/GenInfo/NoticeExplan
+ */
+
+#include <linux/interrupt.h>
+#include <asm/sn/pda.h>
+#include <asm/sn/leds.h>
+
+extern void sn_lb_int_war_check(void);
+extern irqreturn_t timer_interrupt (int irq, void *dev_id, struct pt_regs *regs);
+
+#define SN_LB_INT_WAR_INTERVAL 100
+
+irqreturn_t
+sn_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	/* LED blinking */
+	if (!pda->hb_count--) {
+		pda->hb_count = HZ/2;
+		set_led_bits(pda->hb_state ^= LED_CPU_HEARTBEAT, LED_CPU_HEARTBEAT);
+	}
+
+	if (enable_shub_wars_1_1()) {
+		/* Bugfix code for SHUB 1.1 */
+        	if (pda->pio_shub_war_cam_addr)
+                	*pda->pio_shub_war_cam_addr = 0x8000000000000010UL;
+	}
+	if (pda->sn_lb_int_war_ticks == 0)
+		sn_lb_int_war_check();
+	pda->sn_lb_int_war_ticks++;
+	if (pda->sn_lb_int_war_ticks >= SN_LB_INT_WAR_INTERVAL)
+		pda->sn_lb_int_war_ticks = 0;
+
+	return timer_interrupt(irq, dev_id, regs);
+}