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Re: [vfio-users] W10: installing RX Vega 56 drivers locks up VM



On 3/29/19 2:16 AM, 小川寿人 wrote:
> Hi,
> 
> If you using Radeon RX with i440fx type vm, GPU attached to
> pcie-root-complex trick is maybe needed.
> 
> i440fx and recent AMD Crimson drivers
> https://www.redhat.com/archives/vfio-users/2016-April/msg00153.html
> 
> Remove your Radeon RX Vega 56 passthrough config from
> <hostdev>~~</hostdev>section and using libvirt "<qemu:arg>" option, some
> thing like this.
> 
> <qemu:commandline><qemu:argvalue='-device'/><qemu:argvalue='ioh3420,bus=pci.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1'/><qemu:argvalue='-device'/><qemu:argvalue='vfio-pci,host=01:00.0,bus=root.1,addr=00.0,multifunction=on,rombar=on'/><qemu:argvalue='-device'/><qemu:argvalue='vfio-pci,host=01:00.1,bus=root.1,addr=00.1'/></qemu:commandline>
> 
>
I was only denied permission to /dev/vfio/16 wen trying this, even if I
attached the audio interface the usual way, and if I made qemu run as root.

> Or, Use Q35 type VM with Intel ioh3420 pcie-root-port. For example, see
> below.
> 
>     <controller type='pci' index='2' model='pcie-root-port'>
>       <model name='ioh3420'/>
>       <target chassis='2' port='0x11'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
> function='0x1'/>
>     </controller>
> 
> ~~~~~ snip ~~~~~~
> 
>     <hostdev mode='subsystem' type='pci' managed='yes'>
>       <source>
>         <address domain='0x0000' bus='0xaf' slot='0x00' function='0x0'/>
>       </source>
>       <rom bar='on'/>
>       <address type='pci' domain='0x0000' bus='0x02' slot='0x00'
> function='0x0' multifunction='on'/>
>     </hostdev>
>     <hostdev mode='subsystem' type='pci' managed='yes'>
>       <source>
>         <address domain='0x0000' bus='0xaf' slot='0x00' function='0x1'/>
>       </source>
>       <address type='pci' domain='0x0000' bus='0x02' slot='0x00'
> function='0x1'/>
>     </hostdev>
> 
Thank you, this approach worked. I was unsure what entry of `<model
name='...'/>` I should replace so I replaced them all. Should they
remain so? Updated XML is attached.
<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  <name>vidya-q35</name>
  <uuid>4402f238-85d4-446a-b295-44a7d89094ff</uuid>
  <memory unit='KiB'>8388608</memory>
  <currentMemory unit='KiB'>8388608</currentMemory>
  <memoryBacking>
    <hugepages/>
  </memoryBacking>
  <vcpu placement='static'>4</vcpu>
  <iothreads>2</iothreads>
  <iothreadids>
    <iothread id='1'/>
    <iothread id='2'/>
  </iothreadids>
  <cputune>
    <vcpupin vcpu='0' cpuset='0'/>
    <vcpupin vcpu='1' cpuset='4'/>
    <vcpupin vcpu='2' cpuset='1'/>
    <vcpupin vcpu='3' cpuset='5'/>
    <iothreadpin iothread='1' cpuset='2'/>
    <iothreadpin iothread='2' cpuset='6'/>
  </cputune>
  <os>
    <type arch='x86_64' machine='pc-q35-3.0'>hvm</type>
    <loader readonly='yes' type='pflash'>/run/libvirt/nix-ovmf/OVMF_CODE.fd</loader>
    <nvram>/var/lib/libvirt/qemu/nvram/vidya-q35_VARS.fd</nvram>
  </os>
  <features>
    <acpi/>
    <apic/>
    <vmport state='off'/>
  </features>
  <cpu mode='host-passthrough' check='none'>
    <topology sockets='1' cores='2' threads='2'/>
  </cpu>
  <clock offset='localtime'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <pm>
    <suspend-to-mem enabled='no'/>
    <suspend-to-disk enabled='no'/>
  </pm>
  <devices>
    <emulator>/run/libvirt/nix-emulators/qemu-kvm</emulator>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none' io='threads' iothread='1'/>
      <source dev='/dev/disk/by-partlabel/vidya'/>
      <target dev='vda' bus='virtio'/>
      <boot order='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x10' function='0x0'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none' io='threads' iothread='2'/>
      <source dev='/dev/pool/vidya'/>
      <target dev='vdb' bus='virtio'/>
      <boot order='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </disk>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pcie-root'/>
    <controller type='pci' index='1' model='pcie-root-port'>
      <model name='ioh3420'/>
      <target chassis='1' port='0x10'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0' multifunction='on'/>
    </controller>
    <controller type='pci' index='2' model='pcie-to-pci-bridge'>
      <model name='pcie-pci-bridge'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
    </controller>
    <controller type='pci' index='3' model='pcie-root-port'>
      <model name='ioh3420'/>
      <target chassis='3' port='0x11'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x1'/>
    </controller>
    <controller type='pci' index='4' model='pcie-root-port'>
      <model name='ioh3420'/>
      <target chassis='4' port='0x12'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x2'/>
    </controller>
    <controller type='pci' index='5' model='pcie-root-port'>
      <model name='ioh3420'/>
      <target chassis='5' port='0x13'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x3'/>
    </controller>
    <controller type='pci' index='6' model='pcie-root-port'>
      <model name='ioh3420'/>
      <target chassis='6' port='0x14'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x4'/>
    </controller>
    <controller type='sata' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
    </controller>
    <interface type='network'>
      <mac address='52:54:00:3d:06:4d'/>
      <source network='default'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
    </interface>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <sound model='ich9'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1b' function='0x0'/>
    </sound>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0' multifunction='on'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x04' slot='0x00' function='0x1'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='yes'>
      <source>
        <vendor id='0x045e'/>
        <product id='0x028e'/>
      </source>
      <address type='usb' bus='0' port='1'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='yes'>
      <source>
        <vendor id='0x04b4'/>
        <product id='0x1223'/>
      </source>
      <address type='usb' bus='0' port='2'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='yes'>
      <source>
        <vendor id='0x04d9'/>
        <product id='0x0169'/>
      </source>
      <address type='usb' bus='0' port='3'/>
    </hostdev>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
    </memballoon>
  </devices>
</domain>


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