libvirt/src/cpu_map/x86_EPYC-Rome.xml

<cpus>
  <model name='EPYC-Rome'>
    <decode host='on' guest='on'/>
    <signature family='23' model='49'/>
    <vendor name='AMD'/>
    <feature name='3dnowprefetch'/>
    <feature name='abm'/>
    <feature name='adx'/>
    <feature name='aes'/>
    <feature name='amd-stibp'/>
    <feature name='apic'/>
    <feature name='arat'/>
    <feature name='avx'/>
    <feature name='avx2'/>
    <feature name='bmi1'/>
    <feature name='bmi2'/>
    <feature name='clflush'/>
    <feature name='clflushopt'/>
    <feature name='clwb'/>
    <feature name='clzero'/>
    <feature name='cmov'/>
    <feature name='cr8legacy'/>
    <feature name='cx16'/>
    <feature name='cx8'/>
    <feature name='de'/>
    <feature name='f16c'/>
    <feature name='fma'/>
    <feature name='fpu'/>
    <feature name='fsgsbase'/>
    <feature name='fxsr'/>
    <feature name='fxsr_opt'/>
    <feature name='ibpb'/>
    <feature name='lahf_lm'/>
    <feature name='lm'/>
    <feature name='mca'/>
    <feature name='mce'/>
    <feature name='misalignsse'/>
    <feature name='mmx'/>
    <feature name='mmxext'/>
    <feature name='movbe'/>
    <feature name='msr'/>
    <feature name='mtrr'/>
    <feature name='npt'/>
    <feature name='nrip-save'/>
    <feature name='nx'/>
    <feature name='osvw'/>
    <feature name='pae'/>
    <feature name='pat'/>
    <feature name='pclmuldq'/>
    <feature name='pdpe1gb'/>
    <feature name='perfctr_core'/>
    <feature name='pge'/>
    <feature name='pni'/>
    <feature name='popcnt'/>
    <feature name='pse'/>
    <feature name='pse36'/>
    <feature name='rdpid'/>
    <feature name='rdrand'/>
    <feature name='rdseed'/>
    <feature name='rdtscp'/>
    <feature name='sep'/>
    <feature name='sha-ni'/>
    <feature name='smap'/>
    <feature name='smep'/>
    <feature name='sse'/>
    <feature name='sse2'/>
    <feature name='sse4.1'/>
    <feature name='sse4.2'/>
    <feature name='sse4a'/>
    <feature name='ssse3'/>
    <feature name='svm'/>
    <feature name='syscall'/>
    <feature name='tsc'/>
    <feature name='umip'/>
    <feature name='vme'/>
    <feature name='wbnoinvd'/>
    <feature name='xgetbv1'/>
    <feature name='xsave'/>
    <feature name='xsavec'/>
    <feature name='xsaveerptr'/>
    <feature name='xsaveopt'/>
  </model>
</cpus>