the card has VIA chipset

i have the another card with NEC chipset

 

i googled and tried to passthrough the card

 

but it shows the error below

 

internal error: early end of file from monitor: possible problem:

2016-06-17T08:51:06.766698Z qemu-system-x86_64: -device vfio-pci,host=0d:00.0,bus=root.1,addr=00.6: vfio: error opening /dev/vfio/39: Operation not permitted

2016-06-17T08:51:06.766724Z qemu-system-x86_64: -device vfio-pci,host=0d:00.0,bus=root.1,addr=00.6: vfio: failed to get group 39

2016-06-17T08:51:06.766733Z qemu-system-x86_64: -device vfio-pci,host=0d:00.0,bus=root.1,addr=00.6: Device initialization failed

2016-06-17T08:51:06.766741Z qemu-system-x86_64: -device vfio-pci,host=0d:00.0,bus=root.1,addr=00.6: Device 'vfio-pci' could not be initialized

 

 

vm XML:

 

  <qemu:commandline>

    <qemu:arg value='-device'/>

    <qemu:arg value='ioh3420,bus=pci.0,addr=1c.0,multifunction=on,port=2,chassis=1,id=root.1'/>

    <qemu:arg value='-device'/>

    <qemu:arg value='vfio-pci,host=04:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on'/>

    <qemu:arg value='-device'/>

    <qemu:arg value='vfio-pci,host=04:00.1,bus=root.1,addr=00.1'/>

    <qemu:arg value='-device'/>

    <qemu:arg value='vfio-pci,host=0d:00.0,bus=root.1,addr=00.6'/>

  </qemu:commandline>

 

04:00:0 and 04:00:1 are the graphic card(gtx970) which can work well without the PCI-USB card

 

PCI ACS is on

 

system device:

0d:00.0 USB controller: VIA Technologies, Inc. Device 3483 (rev 01)

 

IOMMU:

/sys/kernel/iommu_groups/39/devices/0000:0d:00.0

 

 

Hi there, I have a similar problem, I bought a USB card and passthrough was not working. If you could make it work can you please share what was the problem and solution? That would be nice

 

Also please share your IOMMU groups, see e.g. my case: https://lime-technology.com/forum/index.php?topic=55163.0

 

THX