Comment 5 for bug 1452016

The following would be a template for a cavium thunderx arm server.
Other arm systems might need slightly different.

TL;DR changes to the default:
- virt + gic version 3 feature
- host cpu match (as detection is broken)

Details:
<domain type='kvm'>
        <os>
                <type arch='aarch64' machine='virt'>hvm</type>
                <boot dev='hd'/>
        </os>
        <features>
                <pae/>
                <gic version='3'/>
        </features>
        <cpu mode='custom' match='exact'>
                <model fallback='allow'>host</model>
        </cpu>
        <devices>
                <interface type='network'>
                        <source network='default'/>
                        <model type='virtio'/>
                </interface>
                <serial type='pty'>
                        <source path='/dev/pts/3'/>
                        <target port='0'/>
                </serial>
        </devices>
</domain>