[dpdk-ci] Intel VFIO-PCI Driver Error -22

Brandon Lo blo at iol.unh.edu
Thu Oct 8 20:19:50 CEST 2020


Thanks, I was not aware that the system had Vt-d disabled.

On Thu, Oct 8, 2020 at 1:46 PM Ferruh Yigit <ferruh.yigit at intel.com> wrote:
>
> On 10/8/2020 5:51 PM, Brandon Lo wrote:
> > Hi everyone,
> >
> > I am having issues trying to bind both Intel Niantic and Fortville
> > NICs over to VFIO-PCI.
> > The machines are running Ubuntu 18.04 with kernel 4.15.0-55.
> > The dpdk-devbind.py tool outputs "Cannot bind to driver vfio-pci" and
> > "Cannot open /sys/bus/pci/drivers//unbind".
> >
> > The dmesg output contains "vfio-pci: probe of [PCI Address] failed
> > with error -22" whenever I try to bind it.
> > Both machines have "intel_iommu=on iommu=pt" in their kernel parameters.
> >
>
> Is 'Vt-d' enabled in the bios?
>
> What do you see under '/sys/kernel/iommu_groups/' folder?



-- 

Brandon Lo

UNH InterOperability Laboratory

21 Madbury Rd, Suite 100, Durham, NH 03824

blo at iol.unh.edu

www.iol.unh.edu


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