--- hw/xfree86/os-support/bus/linuxPci.c
+++ hw/xfree86/os-support/bus/linuxPci.c
@@ -999,7 +999,10 @@ ia64linuxPciInit()
     struct stat st;
 
     linuxPciInit();
-	   
+
+    /* Need space for fake devices.  */
+    xf86MaxPciDevs = MAX_PCI_DEVICES;
+
     if (!stat("/proc/sgi_sn/licenseID", &st) && pciNumBuses) {
        /* Be a little paranoid here and only use this code for Altix systems.
 	* It is generic, so it should work on any system, but depends on