diff -urN linux-2.4.9.tmp/init/main.c linux-2.4.9.SuSE/init/main.c
--- linux-2.4.9.tmp/init/main.c	Sun Sep 23 16:30:35 2001
+++ linux-2.4.9.SuSE/init/main.c	Sun Sep 23 16:45:46 2001
@@ -480,9 +480,21 @@
 #ifndef CONFIG_SMP
 
 #ifdef CONFIG_X86_IO_APIC
+
+static int enable_apic_up;
+
+static int __init enable_apic_up_setup(char *str)
+{
+	enable_apic_up = 1;
+	return 1;
+}
+
+__setup("enableapic", enable_apic_up_setup);
+
 static void __init smp_init(void)
 {
-	APIC_init_uniprocessor();
+	if (enable_apic_up)
+		APIC_init_uniprocessor();
 }
 #else
 #define smp_init()	do { } while (0)