--- Original XML
+++ Altered XML
@@ -14,4 +14,5 @@
   <on_crash>destroy</on_crash>
   <devices>
   </devices>
+  <cpu mode="host-passthrough"/>
 </domain>

Define 'test' with the changed XML? (y/n): Domain 'test' defined successfully.
Changes will take effect after the domain is fully powered off.