diff -r 90ebf7f609fb -r 0e6e3341b3eb xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c	Mon Feb 23 19:11:00 2009 +0100
+++ b/xen/arch/x86/hvm/hvm.c	Wed Mar 11 19:21:15 2009 +0100
@@ -79,6 +79,7 @@ void hvm_enable(struct hvm_function_tabl
      */
     memset(hvm_io_bitmap, ~0, sizeof(hvm_io_bitmap));
     __clear_bit(0x80, hvm_io_bitmap);
+    __clear_bit(0xed, hvm_io_bitmap);
 
     hvm_funcs   = *fns;
     hvm_enabled = 1;