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

[Ferruh Yigit]

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?