<cpu mode='custom' match='exact'> <model fallback='forbid'>IvyBridge</model> <vendor>Intel</vendor> <feature policy='require' name='ss'/> <feature policy='require' name='vmx'/> <feature policy='require' name='pcid'/> <feature policy='require' name='hypervisor'/> <feature policy='require' name='tsc_adjust'/> <feature policy='require' name='xsaveopt'/> </cpu>