<cpu mode='custom' match='exact'> <arch>x86_64</arch> <model fallback='allow'>Nehalem</model> <feature policy='require' name='svm'/> <feature policy='require' name='3dnowext'/> <feature policy='require' name='dca'/> <feature policy='require' name='xtpr'/> <feature policy='require' name='monitor'/> <feature policy='require' name='pbe'/> <feature policy='disable' name='popcnt'/> <feature policy='disable' name='sse4.2'/> <feature policy='disable' name='sse'/> </cpu>