diff -r 19c55935580f xen/include/asm-x86/hvm/vmx/vmx.h
--- a/xen/include/asm-x86/hvm/vmx/vmx.h	Wed Apr 12 17:53:38 2006
+++ b/xen/include/asm-x86/hvm/vmx/vmx.h	Thu Apr 13 02:31:25 2006
@@ -61,8 +61,7 @@
     CPU_BASED_MWAIT_EXITING | \
     CPU_BASED_MOV_DR_EXITING | \
     CPU_BASED_ACTIVATE_IO_BITMAP | \
-    CPU_BASED_USE_TSC_OFFSETING  | \
-    CPU_BASED_UNCOND_IO_EXITING \
+    CPU_BASED_USE_TSC_OFFSETING  \
     )
 
 #define MONITOR_CPU_BASED_EXEC_CONTROLS_IA32E_MODE \