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

[Brandon Lo]

I may have sent that thanks email too early.

Vt-d is enabled now for both machines, but the same error -22 is still
occurring in dmesg.

`/sys/kernel/iommu_groups/` is empty.
Perhaps the kernel parameters are not being set properly?

Thanks,
Brandon

On Thu, Oct 8, 2020 at 2:19 PM Brandon Lo <blo at iol.unh.edu> wrote:
>
> 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



-- 

Brandon Lo

UNH InterOperability Laboratory

21 Madbury Rd, Suite 100, Durham, NH 03824

blo at iol.unh.edu

www.iol.unh.edu