<cpu mode='custom' match='exact'> <model fallback='forbid'>Nehalem</model> <vendor>Intel</vendor> <feature policy='require' name='vme'/> <feature policy='require' name='ss'/> <feature policy='require' name='x2apic'/> <feature policy='require' name='hypervisor'/> <feature policy='require' name='tsc_adjust'/> <feature policy='require' name='rdtscp'/> </cpu>