Patch by John Dennis <jdennis@redhat.com> which fixes Red Hat bugzilla:

Inserts a short delay in the xf86SlowBcopy() routine and prevent PCI bus
lockups on ia64 which were observed with the nv driver (#98139)

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=98139

===================================================================
RCS file: /xf86/anoncvs/cvs/xc/programs/Xserver/hw/xfree86/os-support/misc/SlowBcopy.c,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -p -r1.5 -r1.6
--- xc/programs/Xserver/hw/xfree86/os-support/misc/SlowBcopy.c	2001/11/19 15:44:18	1.5
+++ xc/programs/Xserver/hw/xfree86/os-support/misc/SlowBcopy.c	2003/04/07 16:23:39	1.6
@@ -26,6 +26,9 @@
 void
 xf86SlowBcopy(unsigned char *src, unsigned char *dst, int len)
 {
+#if defined(__ia64__)
+    outb(0x80, 0x00);
+#endif
     while(len--)
     {
 	*dst++ = *src++;