libvirt/tests/cputestdata/x86-host+pentium3.xml

<cpu match='exact'>
  <model fallback='allow'>pentium3</model>
  <feature policy='require' name='lahf_lm'/>
  <feature policy='require' name='lm'/>
  <feature policy='require' name='nx'/>
  <feature policy='require' name='syscall'/>
  <feature policy='require' name='sse4.1'/>
  <feature policy='require' name='dca'/>
  <feature policy='require' name='xtpr'/>
  <feature policy='require' name='cx16'/>
  <feature policy='require' name='ssse3'/>
  <feature policy='require' name='tm2'/>
  <feature policy='require' name='est'/>
  <feature policy='require' name='vmx'/>
  <feature policy='require' name='ds_cpl'/>
  <feature policy='require' name='monitor'/>
  <feature policy='require' name='pni'/>
  <feature policy='require' name='pbe'/>
  <feature policy='require' name='tm'/>
  <feature policy='require' name='ht'/>
  <feature policy='require' name='ss'/>
  <feature policy='require' name='sse2'/>
  <feature policy='require' name='acpi'/>
  <feature policy='require' name='ds'/>
  <feature policy='require' name='clflush'/>
  <feature policy='require' name='apic'/>
</cpu>