USB: help regarding what should be incorporated int he xml?

Hi,

I was working with my xml yesterday and only inserted this lines to make my vm work:

   <controller type='usb' index='0' model='ich9-ehci1'>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x05' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x05' function='0x0' multifunction='on'/>
    </controller>

I have several doubts and hope someone can help me out.

Regarding "address type": I had to change slot to 0x05 because otherwise it would not work. Before it was 0x02 and it was already assigned to another function ... how can I check for my particular system all available "addresses" for the concepts we usually define in the xml (ie usb, sata, pci, network, cdrom, disk, etc.)? Is there anything like lspci for this?

Why do everyone add this other lines and what do they add compared to the ones I have in my xml?

    <controller type='usb' index='0' model='ich9-ehci1'>
      <alias name='usb0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <alias name='usb0'/>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <alias name='usb0'/>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <alias name='usb0'/>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x2'/>
    </controller>

Rgds.

I think (I'm not sure) you can remove all the address stuff from the XML and when you run the VM, it will fill in any address stuff it needs.

Hi Justin,

You were right! Thx for supprot.

Could you post your working xml for windows vm? Mouse is working but still needs to be finetuned, since it moves but the leftclick is not working from the beginning. I want to check with your setup if you have something else..

Rgds.

Hi Justin,

You were right! Thx for supprot.

Could you post your working xml for windows vm? Mouse is working but still needs to be finetuned, since it moves but the leftclick is not working from the beginning. I want to check with your setup if you have something else..

Rgds.

Glad I could help.  Here is my full working XML for windows 8.1 with GPU passthru...

<domain type='kvm' id='4' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  <name>Windows8_Passthru</name>
  <uuid>2e151e44-f801-4773-a6df-bfb01b0812fb</uuid>
  <description>Windows8 with Passthru</description>
  <memory unit='KiB'>4194304</memory>
  <currentMemory unit='KiB'>4194304</currentMemory>
  <memoryBacking>
    <nosharepages/>
    <locked/>
  </memoryBacking>
  <vcpu placement='static'>2</vcpu>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-q35-2.1'>hvm</type>
    <boot dev='hd'/>
    <bootmenu enable='no'/>
  </os>
  <features>
    <acpi/>
    <apic/>
  </features>
  <cpu mode='host-passthrough'>
  </cpu>
  <clock offset='localtime'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none' io='native'/>
      <source file='/mnt/cache/VM/Windows8.qcow2'/>
      <backingStore/>
      <target dev='vdc' bus='virtio'/>
      <alias name='virtio-disk2'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x03' function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/user/backup/Programs/WindowsISOs/en_windows_8_1_x64_dvd_2707217.iso'/>
      <backingStore/>
      <target dev='hda' bus='sata'/>
      <readonly/>
      <alias name='sata0-0-0'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/user/backup/Programs/WindowsISOs/virtio-win-0.1-81.iso'/>
      <backingStore/>
      <target dev='sdd' bus='sata'/>
      <readonly/>
      <alias name='sata0-0-3'/>
      <address type='drive' controller='0' bus='0' target='0' unit='3'/>
    </disk>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <alias name='usb0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <alias name='usb0'/>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <alias name='usb0'/>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <alias name='usb0'/>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x2'/>
    </controller>
    <controller type='sata' index='0'>
      <alias name='sata0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pcie-root'>
      <alias name='pcie.0'/>
    </controller>
    <controller type='pci' index='1' model='dmi-to-pci-bridge'>
      <alias name='pci.1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1e' function='0x0'/>
    </controller>
    <controller type='pci' index='2' model='pci-bridge'>
      <alias name='pci.2'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x01' function='0x0'/>
    </controller>
    <interface type='bridge'>
      <mac address='00:16:3e:c8:c8:c8'/>
      <source bridge='br0'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x02' function='0x0'/>
    </interface>
    <input type='tablet' bus='usb'>
      <alias name='input0'/>
    </input>
    <hostdev mode='subsystem' type='usb' managed='no'>
      <source>
        <vendor id='0x050d'/>
        <product id='0x0201'/>
        <address bus='3' device='3'/>
      </source>
      <alias name='hostdev0'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='no'>
      <source>
        <vendor id='0x045e'/>
        <product id='0x0745'/>
        <address bus='3' device='6'/>
      </source>
      <alias name='hostdev1'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='no'>
      <source>
        <vendor id='0x0a12'/>
        <product id='0x0001'/>
        <address bus='3' device='7'/>
      </source>
      <alias name='hostdev2'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='no'>
      <source>
        <vendor id='0x147a'/>
        <product id='0xe03e'/>
        <address bus='3' device='4'/>
      </source>
      <alias name='hostdev3'/>
    </hostdev>
    <memballoon model='virtio'>
      <alias name='balloon0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x04' function='0x0'/>
    </memballoon>
  </devices>
  <seclabel type='none' model='none'/>
  <qemu:commandline>
    <qemu:arg value='-device'/>
    <qemu:arg value='ioh3420,bus=pcie.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1'/>
    <qemu:arg value='-device'/>
    <qemu:arg value='vfio-pci,host=01:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on'/>
    <qemu:arg value='-device'/>
    <qemu:arg value='vfio-pci,host=01:00.1,bus=pcie.0'/>
    <qemu:arg value='-device'/>
    <qemu:arg value='vfio-pci,host=07:00.0,bus=pcie.0'/>
  </qemu:commandline>
</domain>

JustinChase, you're the man. I've been tearing my hair out most of today trying to fix a very similar issue and even posted it (here - http://lime-technology.com/forum/index.php?topic=36496.0) right before seeing this thread.

so the answer for me was to add the required config lines but without the address for the usb controller and let it write that part itself.

very happy bunny here, just wanted to say a big thankyou

I know the feeling!!  I've torn out far too much of my own hair trying to figure stuff out also; so I really try to 'pay it forward' when/wherever I can.

you did it well, very happy with the new setup in kvm. much easier to use (once you have the hang of it that is).

thanks again