Virsh+qemu+kvm setup of armv7 worker on aarch64 host

# virsh dumpxml overdrive-02
<domain type='qemu' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  <name>overdrive-02</name>
  <uuid>99c89b9a-b404-4d88-aaf7-b6a442b90826</uuid>
  <metadata>
    <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
      <libosinfo:os id="http://opensuse.org/opensuse/13.2"/>
    </libosinfo:libosinfo>
  </metadata>
  <memory unit='KiB'>3145728</memory>
  <currentMemory unit='KiB'>3145728</currentMemory>
  <vcpu placement='static'>6</vcpu>
  <os>
    <type arch='aarch64' machine='virt-3.0'>hvm</type>
    <kernel>/srv/libvirt/truck/boot/vmlinuz-3.17.4-301.fc21.armv7hl</kernel>
    <initrd>/srv/libvirt/truck/boot/initramfs-3.17.4-301.fc21.armv7hl.img</initrd>
    <cmdline>ro root=UUID=e098e36f-f409-44cb-9d8e-9d5c0e2ed9c9 console=ttyAMA0,115200</cmdline>
    <boot dev='hd'/>
  </os>
  <features>
    <gic version='2'/>
  </features>
  <cpu mode='custom' match='exact' check='none'>
    <model fallback='allow'>cortex-a57</model>
  </cpu>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-aarch64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw' cache='none' io='native'/>
      <source file='/srv/libvirt/truck/overdrive-02.img'/>
      <target dev='sda' bus='virtio'/>
      <address type='virtio-mmio'/>
    </disk>
    <controller type='usb' index='0' model='qemu-xhci' ports='15'>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
    </controller>
    <controller type='pci' index='0' model='pcie-root'/>
    <controller type='pci' index='1' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='1' port='0x8'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0' multifunction='on'/>
    </controller>
    <controller type='pci' index='2' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='2' port='0x9'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <controller type='pci' index='3' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='3' port='0xa'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='4' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='4' port='0xb'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x3'/>
    </controller>
    <controller type='pci' index='5' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='5' port='0xc'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x4'/>
    </controller>
    <controller type='pci' index='6' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='6' port='0xd'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x5'/>
    </controller>
    <controller type='pci' index='7' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='7' port='0xe'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x6'/>
    </controller>
    <controller type='pci' index='8' model='pcie-to-pci-bridge'>
      <model name='pcie-pci-bridge'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
    </controller>
    <controller type='scsi' index='0' model='lsilogic'>
      <address type='virtio-mmio'/>
    </controller>
    <interface type='network'>
      <mac address='02:05:e4:d4:15:e2'/>
      <source network='ovs-br1'/>
      <model type='virtio-net-device'/>
      <address type='virtio-mmio'/>
    </interface>
    <serial type='pty'>
      <target type='system-serial' port='0'>
        <model name='pl011'/>
      </target>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <channel type='unix'>
      <target type='virtio' name='org.qemu.guest_agent.0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <rng model='virtio'>
      <backend model='random'>/dev/urandom</backend>
      <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
    </rng>
  </devices>
  <qemu:commandline>
    <qemu:arg value='-cpu'/>
    <qemu:arg value='host,aarch64=off'/>
    <qemu:arg value='-enable-kvm'/>
    <qemu:arg value='-nographic'/>
  </qemu:commandline>
</domain>