List host CPU capabilities using virsh
. This can be useful to pin down the exact functionality you want in your libvirt guests <cpu>
tags.
# virsh capabilities | virsh cpu-baseline /dev/stdin
<cpu mode='custom' match='exact'>
<model fallback='forbid'>IvyBridge</model>
<vendor>Intel</vendor>
<feature policy='require' name='invtsc'/>
<feature policy='require' name='osxsave'/>
<feature policy='require' name='pcid'/>
<feature policy='require' name='pdcm'/>
<feature policy='require' name='xtpr'/>
<feature policy='require' name='tm2'/>
<feature policy='require' name='est'/>
<feature policy='require' name='smx'/>
<feature policy='require' name='vmx'/>
<feature policy='require' name='ds_cpl'/>
<feature policy='require' name='monitor'/>
<feature policy='require' name='dtes64'/>
<feature policy='require' name='pbe'/>
<feature policy='require' name='tm'/>
<feature policy='require' name='ht'/>
<feature policy='require' name='ss'/>
<feature policy='require' name='acpi'/>
<feature policy='require' name='ds'/>
</cpu>
- Source(s)