hi guys, im relatively new to this but i am trying to pass through my primary gpu to a vm but i keep getting a warning. now i have a second VM running thats identical in every way minus the gpu is obviously not the primary. passing the vbios through as i saw in one of SpaceInvader's videos ( i think his tag here is gridrunner ) Doesn't alieve this situation either. for more information on what im going to be doing with these vms i am trying to copy LTT's 2 gamers 1 cpu which can be seen here

 

Here is the logs of the event

Quote

LC_ALL=C PATH=/bin:/sbin:/usr/bin:/usr/sbin HOME=/ QEMU_AUDIO_DRV=none /usr/local/sbin/qemu -name 'guest=Player 2,debug-threads=on' -S -object 'secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-4-Player 2/master-key.aes' -machine pc-i440fx-2.10,accel=kvm,usb=off,dump-guest-core=off,mem-merge=off -cpu host,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff,hv_vendor_id=none -drive file=/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi.fd,if=pflash,format=raw,unit=0,readonly=on -drive file=/etc/libvirt/qemu/nvram/afb0e700-5fd5-1f9e-3faa-b86e19371bc9_VARS-pure-efi.fd,if=pflash,format=raw,unit=1 -m 12288 -realtime mlock=off -smp 8,sockets=1,cores=4,threads=2 -uuid afb0e700-5fd5-1f9e-3faa-b86e19371bc9 -display none -no-user-config -nodefaults -chardev 'socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-4-Player 2/monitor.sock,server,nowait' -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-hpet -no-shutdown -boot strict=on -device nec-usb-l0 -chardev 'socket,id=charchannel0,path=/var/lib/libvirt/qemu/channel/target/domain-4-Player 2/org.qemu.guest_agent.0,server,nowait' -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 -device vfio-pci,host=04:00.0,id=hostdev0,bus=pci.0,addr=0x6 -device vfio-pci,host=04:00.1,id=hostdev1,bus=pci.0,addr=0x8 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x9 -msg timestamp=on
2018-03-10 06:42:17.023+0000: Domain id=4 is tainted: high-privileges
2018-03-10 06:42:17.023+0000: Domain id=4 is tainted: host-cpu
2018-03-10T06:42:17.099057Z qemu-system-x86_64: -chardev pty,id=charserial0: char device redirected to /dev/pts/1 (label charserial0)
2018-03-10T06:42:20.403519Z qemu-system-x86_64: -device vfio-pci,host=04:00.0,id=hostdev0,bus=pci.0,addr=0x6: Failed to mmap 0000:04:00.0 BAR 3. Performance may be slow

 

and here is the XML

<domain type='kvm'>
  <name>Player 2</name>
  <uuid>afb0e700-5fd5-1f9e-3faa-b86e19371bc9</uuid>
  <metadata>
    <vmtemplate xmlns="unraid" name="Windows 10" icon="windows.png" os="windows10"/>
  </metadata>
  <memory unit='KiB'>12582912</memory>
  <currentMemory unit='KiB'>12582912</currentMemory>
  <memoryBacking>
    <nosharepages/>
  </memoryBacking>
  <vcpu placement='static'>8</vcpu>
  <cputune>
    <vcpupin vcpu='0' cpuset='1'/>
    <vcpupin vcpu='1' cpuset='11'/>
    <vcpupin vcpu='2' cpuset='3'/>
    <vcpupin vcpu='3' cpuset='13'/>
    <vcpupin vcpu='4' cpuset='5'/>
    <vcpupin vcpu='5' cpuset='15'/>
    <vcpupin vcpu='6' cpuset='7'/>
    <vcpupin vcpu='7' cpuset='17'/>
  </cputune>
  <os>
    <type arch='x86_64' machine='pc-i440fx-2.10'>hvm</type>
    <loader readonly='yes' type='pflash'>/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi.fd</loader>
    <nvram>/etc/libvirt/qemu/nvram/afb0e700-5fd5-1f9e-3faa-b86e19371bc9_VARS-pure-efi.fd</nvram>
  </os>
  <features>
    <acpi/>
    <apic/>
    <hyperv>
      <relaxed state='on'/>
      <vapic state='on'/>
      <spinlocks state='on' retries='8191'/>
      <vendor_id state='on' value='none'/>
    </hyperv>
  </features>
  <cpu mode='host-passthrough' check='none'>
    <topology sockets='1' cores='4' threads='2'/>
  </cpu>
  <clock offset='localtime'>
    <timer name='hypervclock' present='yes'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/local/sbin/qemu</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw' cache='writeback'/>
      <source file='/mnt/user/domains/Player 2/vdisk1.img'/>
      <target dev='hdc' bus='virtio'/>
      <boot order='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </disk>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw' cache='writeback'/>
      <source file='/mnt/user/domains/Player 2/vdisk2.img'/>
      <target dev='hdd' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/user/ISOs/Windows.iso'/>
      <target dev='hda' bus='ide'/>
      <readonly/>
      <boot order='2'/>
      <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/ISOs/virtio-win-0.1.141.iso'/>
      <target dev='hdb' bus='ide'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>
    <controller type='usb' index='0' model='nec-xhci'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:c7:54:1b'/>
      <source bridge='br0'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </interface>
    <serial type='pty'>
      <target port='0'/>
    </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>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x04' slot='0x00' function='0x1'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </hostdev>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </memballoon>
  </devices>
</domain>

 

anyone have anything on this? still havent made any headway on this

This may help, I overcame this issue recently, I put the answer in the first question

 

 

I am having the same issue. I am running a machine with multiple GPUS. 4 out out the 5 are working fine. I can likely reinstall this one from scratch and get it working.

Before I do that I'll point out something I noticed about the ones that work, vs the one that does not work:
The ones that work have "alias names" for the gpus
example:
 

 <hostdev mode='subsystem' type='pci' managed='yes'>
    <driver name='vfio'/>
    <source>
    <address domain='0x0000' bus='0x6e' slot='0x00' function='0x0'/>
    </source>
    <alias name='hostdev0'/>  <!--- THIS --->
    <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</hostdev>
<hostdev mode='subsystem' type='pci' managed='yes'>
    <driver name='vfio'/>
    <source>
    <address domain='0x0000' bus='0x6e' slot='0x00' function='0x1'/>
    </source>
    <alias name='hostdev1'/>  <!--- THIS --->
    <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
</hostdev>

And the one that doesn't work, does not have the alias tags, and if I manually ad them, they do not persist after updating the xml.  Hopefully this offers a clue to fixing this problem.