Using power9 arch, attached is the xml config

<domain type="qemu">
  <name>ubuntu22.10-kinetic-ppc64le</name>
  <uuid>e410f72a-6555-4b47-bb18-8bb61eb52de2</uuid>
  <metadata>
    <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
      <libosinfo:os id="http://ubuntu.com/ubuntu/22.04"/>
    </libosinfo:libosinfo>
  </metadata>
  <memory unit="KiB">8388608</memory>
  <currentMemory unit="KiB">8388608</currentMemory>
  <vcpu placement="static">1</vcpu>
  <os>
    <type arch="ppc64le" machine="pseries-jammy">hvm</type>
  </os>
  <cpu mode="custom" match="exact" check="none">
    <model fallback="forbid">POWER9</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-ppc64le</emulator>
    <disk type="file" device="cdrom">
      <driver name="qemu" type="raw" cache="unsafe"/>
      <source file="/home/cking/virt/ubuntu-22.04-live-server-ppc64el.iso"/>
      <target dev="sdb" bus="scsi"/>
      <readonly/>
      <boot order="2"/>
      <address type="drive" controller="0" bus="0" target="0" unit="1"/>
    </disk>
    <disk type="file" device="disk">
      <driver name="qemu" type="qcow2" cache="unsafe"/>
      <source file="/home/cking/virt/ubuntu22.04-ppc64le-clone"/>
      <target dev="vda" bus="virtio"/>
      <boot order="1"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x07" function="0x0"/>
    </disk>
    <controller type="usb" index="0" model="qemu-xhci">
      <address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x0"/>
    </controller>
    <controller type="pci" index="0" model="pci-root">
      <model name="spapr-pci-host-bridge"/>
      <target index="0"/>
    </controller>
    <controller type="scsi" index="0" model="ibmvscsi">
      <address type="spapr-vio" reg="0x00002000"/>
    </controller>
    <controller type="virtio-serial" index="0">
      <address type="pci" domain="0x0000" bus="0x00" slot="0x04" function="0x0"/>
    </controller>
    <interface type="network">
      <mac address="52:54:00:27:88:a3"/>
      <source network="default"/>
      <model type="rtl8139"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x0"/>
    </interface>
    <serial type="pty">
      <target type="spapr-vio-serial" port="0">
        <model name="spapr-vty"/>
      </target>
      <address type="spapr-vio" reg="0x30000000"/>
    </serial>
    <console type="pty">
      <target type="serial" port="0"/>
      <address type="spapr-vio" reg="0x30000000"/>
    </console>
    <channel type="spicevmc">
      <target type="virtio" name="com.redhat.spice.0"/>
      <address type="virtio-serial" controller="0" bus="0" port="1"/>
    </channel>
    <input type="keyboard" bus="usb">
      <address type="usb" bus="0" port="1"/>
    </input>
    <input type="mouse" bus="usb">
      <address type="usb" bus="0" port="2"/>
    </input>
    <graphics type="spice" autoport="yes">
      <listen type="address"/>
    </graphics>
    <sound model="ich6">
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x0"/>
    </sound>
    <audio id="1" type="spice"/>
    <video>
      <model type="vga" vram="16384" heads="1" primary="yes"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x06" function="0x0"/>
    </video>
    <memballoon model="virtio">
      <address type="pci" domain="0x0000" bus="0x00" slot="0x05" function="0x0"/>
    </memballoon>
    <panic model="pseries"/>
  </devices>
</domain>