--- linux-2.6.17-rc1/arch/alpha/kernel/setup.c.old	2006-04-05 12:52:25.636715545 +0100
+++ linux-2.6.17-rc1/arch/alpha/kernel/setup.c	2006-04-05 12:53:01.645504167 +0100
@@ -24,6 +24,7 @@
 #include <linux/config.h>	/* CONFIG_ALPHA_LCA etc */
 #include <linux/mc146818rtc.h>
 #include <linux/console.h>
+#include <linux/cpu.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/string.h>
@@ -471,6 +472,21 @@
 	return 0;
 }
 
+static struct cpu cpu_devices[NR_CPUS];
+
+int __init alpha_init(void)
+{
+	int i;
+
+	/* register CPU devices */
+	for_each_possible_cpu(i)
+		register_cpu(&cpu_devices[i], i, NULL);
+
+	return 0;
+}
+
+arch_initcall(alpha_init);
+
 void __init
 setup_arch(char **cmdline_p)
 {