[SOLVED]Problem with mouse tracking/USB controller help

Good evening guys, i've got a long way forward with kvm this weekend, however upon managing to get passthough of 2 pci nics i have managed to ruin my mouse input to the vm and am loosing my mind (and patience) with this issue.

here is my current xml (mostly pulled from one of jonp's);

<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  <name>win10</name>
  <uuid>cc411d70-4463-4db7-bf36-d364c0cdaa9d</uuid>
  <memory unit='KiB'>2097152</memory>
  <currentMemory unit='KiB'>976563</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-q35-2.1'>hvm</type>
    <boot dev='cdrom'/>
  </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='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/disk/vertex/isos/win10.iso'/>
      <target dev='sdc' bus='sata'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='2'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/disk/vertex/isos/virtio.iso'/>
      <target dev='sdd' bus='sata'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='3'/>
    </disk>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/mnt/disk/vertex/vms/win10.qcow2'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x02' function='0x0'/>
    </disk>
    <controller type='sata' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pcie-root'/>
    <controller type='pci' index='1' model='dmi-to-pci-bridge'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1e' function='0x0'/>
    </controller>
    <controller type='pci' index='2' model='pci-bridge'>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x01' function='0x0'/>
    </controller>
    <controller type='usb' index='0' model='none'/>
    <interface type='bridge'>
      <mac address='52:54:00:fd:96:75'/>
      <source bridge='br0'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/>
    </interface>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' websocket='-1' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x03' function='0x0'/>
    </memballoon>
  </devices>
  <qemu:commandline>
    <qemu:arg value='-device'/>
    <qemu:arg value='vfio-pci,host=02:00.0,bus=pcie.0'/>
    <qemu:arg value='-device'/>
    <qemu:arg value='vfio-pci,host=06:00.0,bus=pcie.0'/>
  </qemu:commandline>
</domain>

i understand that my mouse problem in vnc is caused by not having a 'tablet' input type, this is corrected by the following code adding with the other input types;

<input type='tablet' bus='usb'/>

however for this to function the vm requires a usb controller which my current xml does not allow for. the following code is pulled from another vm that mouse tracking is not a problem on (created using vm manager);

<controller type='usb' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>

the above doesn't work on this vm, but i have gathered it's to do with the pci device of the host i'm referencing. i have changed the bus/slot/function numbers in differing combinations but still no joy. depending on the combination i get either of the following error messages when trying to apply the config in VM manager;

Error changing domain definition: internal error: Bus 0 must be PCI for integrated PIIX3 USB or IDE controllers

Error changing domain definition: XML error: PCI bus is not compatible with the device at 0000:00:01.3. Device requires a standard PCI slot, which is not provided by bus 0000:00

below is an output of lspci (well from the extension page of the unraid gui);

00:00.0 Host bridge: Intel Corporation 82Q35 Express DRAM Controller (rev 02)

00:02.0 VGA compatible controller: Intel Corporation 82Q35 Express Integrated Graphics Controller (rev 02)

00:03.0 Communication controller: Intel Corporation 82Q35 Express MEI Controller (rev 02)

00:19.0 Ethernet controller: Intel Corporation 82566DM-2 Gigabit Network Connection (rev 02)

00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02)

00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02)

00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02)

00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02)

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02)

00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02)

00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 02)

00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 02)

00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 (rev 02)

00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02)

00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02)

00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02)

00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02)

00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02)

00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)

00:1f.0 ISA bridge: Intel Corporation 82801IO (ICH9DO) LPC Interface Controller (rev 02)

00:1f.2 SATA controller: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA Controller [AHCI mode] (rev 02)

00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02)

02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168 PCI Express Gigabit Ethernet controller (rev 02)

03:00.0 IDE interface: Marvell Technology Group Ltd. 88SE6101/6102 single-port PATA133 interface (rev b2)

06:00.0 Network controller: Atheros Communications Inc. AR5416 Wireless Network Adapter [AR5008 802.11(a)bgn] (rev 01)

06:03.0 FireWire (IEEE 1394): LSI Corporation FW322/323 [TrueFire] 1394a Controller (rev 70)

if anyone can point out what i can do to rectify this small (but bloody annoying) problem i will be most grateful, i know i'm close but had to put my lighter down as theres no cigar yet.

TIA guys

so right after posting this i managed to fix it, typical isn't it. i can't take any credit, after hitting the 'post' button i noticed another thread asking about usb details in the xml, here - http://lime-technology.com/forum/index.php?topic=36424.0

big thanks goes to JustinChase for giving a very simple way to fix my issue also. this was to add the require config lines but leave out the address line in the usb controller section and let the system write that part itself.

so for completeness of this thread here is my working windows 10 xml, complete with passthrough of 2x pci nics and a mouse that now works accurately;

<domain type='kvm' id='20' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  <name>win10</name>
  <uuid>cc411d70-4463-4db7-bf36-d364c0cdaa9d</uuid>
  <memory unit='KiB'>2097152</memory>
  <currentMemory unit='KiB'>976563</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-q35-2.1'>hvm</type>
    <boot dev='cdrom'/>
  </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='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/disk/vertex/isos/win10.iso'/>
      <backingStore/>
      <target dev='sdc' bus='sata'/>
      <readonly/>
      <alias name='sata0-0-2'/>
      <address type='drive' controller='0' bus='0' target='0' unit='2'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/disk/vertex/isos/virtio.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>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/mnt/disk/vertex/vms/win10.qcow2'/>
      <backingStore/>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x02' function='0x0'/>
    </disk>
    <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>
    <controller type='usb' index='0'>
      <alias name='usb0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x04' function='0x0'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:fd:96:75'/>
      <source bridge='br0'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/>
    </interface>
    <input type='tablet' bus='usb'>
      <alias name='input0'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='5900' autoport='yes' websocket='5700' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
      <alias name='video0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <alias name='balloon0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x03' function='0x0'/>
    </memballoon>
  </devices>
  <qemu:commandline>
    <qemu:arg value='-device'/>
    <qemu:arg value='vfio-pci,host=02:00.0,bus=pcie.0'/>
    <qemu:arg value='-device'/>
    <qemu:arg value='vfio-pci,host=06:00.0,bus=pcie.0'/>
  </qemu:commandline>
</domain>

probably the quickest fix time in the history of kvm. more down to my inablity to find anything related to my issue before resorting to posting it in the first place. sorry about that, but hope my xml may be of use to someone else

Hi @mossiemosforth. I just wanted to say thank you for documenting your settings!

6 years after you anserwed your own thread I found your post and it was pretty much the only resource online on how to add the PCIe bus with USB in virsh edit XML after creating the vm. So happy I found your post!