<cpu mode='custom' match='exact'> <model fallback='allow'>SandyBridge</model> <vendor>Intel</vendor> <feature policy='require' name='vme'/> <feature policy='require' name='ss'/> <feature policy='require' name='pcid'/> <feature policy='require' name='osxsave'/> <feature policy='require' name='hypervisor'/> <feature policy='require' name='invtsc'/> <feature policy='disable' name='rdtscp'/> </cpu>