[dpdk-users] FATAL: Module uio not found

[Tan, Jianfeng]

> -----Original Message-----
> From: users [mailto:users-bounces at dpdk.org] On Behalf Of RanjithKumar
> Sent: Tuesday, September 12, 2017 8:31 PM
> To: pxv3620 at rit.edu
> Cc: users
> Subject: Re: [dpdk-users] FATAL: Module uio not found
> 
> Hello All,
> 
> modprobe uio did not work , and below is the output VM NIC current drivers.
> 
> ubuntu at mysite-vpgwu-slice1-25:~/dpdk-2.0.0/tools$ ./dpdk_nic_bind.py
> --status
> 
> Network devices using DPDK-compatible driver
> ============================================
> <none>
> 
> Network devices using kernel driver
> ===================================
> 0000:00:03.0 'Virtio network device' if= drv=virtio-pci unused=
> 0000:00:04.0 'Virtio network device' if= drv=virtio-pci unused=
> 0000:00:05.0 'Virtio network device' if= drv=virtio-pci unused=
> 0000:00:06.0 'Virtio network device' if= drv=virtio-pci unused=
> 0000:00:07.0 'Virtio network device' if= drv=virtio-pci unused=
> 
> Other network devices
> =====================
> <none>
> 
> So i followed below steps to use virtio-pci
> 
> 
>    1. modprobe vfio enable_unsafe_noiommu_mode=1
>    2. modprobe vfio-pci
>    3. ./dpdk_nic_bind.py -b vfio-pci 0000:00:04.0
> 
> But i am getting below error while binding the Virtio NIC to DPDK

So far you cannot bind virtio devices with normal vfio-pci as the vIOMMU support is not upstreamed yet (https://patchwork.kernel.org/patch/9670273/).

Instead, you can bind virtio devices to vfio-pci (no-iommu mode). You can enable it like:
  $ modprobe vfio enable_unsafe_noiommu_mode=1
  $ modprobe vfio-pci

Thanks,
Jianfeng

> 
> *Error: bind failed for 0000:00:04.0 - Cannot bind to driver vfio-pci
> Error: unbind failed for 0000:00:04.0 - Cannot open
> /sys/bus/pci/drivers//unbind*
> 
> *Any input?*
> 
> *Regards,*
> *Ranjith*
> 
> 
> 
> Regards,
> Ranjith
> 
> 
> On Tue, Sep 12, 2017 at 2:31 PM, Pragash Vijayaragavan <pxv3620 at rit.edu>
> wrote:
> 
> > Hi,
> >
> > try modprobe  igb_uio/ vfio-pci /uio_pci_generic
> >
> >
> >
> > Thanks,
> >
> > Pragash Vijayaragavan
> > Grad Student at Rochester Institute of Technology
> > email : pxv3620 at rit.edu
> > ph : 585 764 4662 <(585)%20764-4662>
> >
> >
> > On Tue, Sep 12, 2017 at 4:54 AM, RanjithKumar <ranjithdvk at gmail.com>
> > wrote:
> >
> >> Hi All,
> >>
> >> I have installed DPDK in open stack lunched virtual machine and Modrobe
> is
> >> failing with below error
> >>
> >>  modprobe: FATAL: Module uio not found
> >>
> >> Any input?
> >>
> >> Regards,
> >> Ranjith
> >>
> >
> >