On Tue, Feb 21, 2023 at 09:46:30PM +0530, Nagendra Prabhu A T wrote:
> These are the messages i am seeing dmesg
> [16588.298660] vfio-pci: probe of 0000:8a:00.2 failed with error -22
> [16591.574630] i40e 0000:8a:00.3: i40e_ptp_stop: removed PHC on
> enp138s0f3
> [16593.138613] vfio-pci: probe of 0000:8a:00.3 failed with error -22
> [16593.138674] vfio-pci: probe of 0000:8a:00.3 failed with error -22
> [16627.551866] vfio-pci: probe of 0000:51:00.0 failed with error -22
> [16627.551922] vfio-pci: probe of 0000:51:00.0 failed with error -22
> [16716.344530] vfio-pci: probe of 0000:51:00.0 failed with error -22
> [16716.344585] vfio-pci: probe of 0000:51:00.0 failed with error -22
> [17859.876566] vfio-pci: probe of 0000:51:00.0 failed with error -22
> [17859.876622] vfio-pci: probe of 0000:51:00.0 failed with error -22
> root@nat-kvm:/home/nat# cat /boot/config-$(uname -r) | grep NOIOMMU
> CONFIG_VFIO_NOIOMMU=y
> root@nat-kvm:/home/nat#
> Interface type :
> Other Network devices
> =====================
> 0000:51:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572'
> unused=i40e,vfio-pci
> 0000:51:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572'
> unused=i40e,vfio-pci
> 0000:51:00.2 'Ethernet Controller X710 for 10GbE SFP+ 1572'
> unused=i40e,vfio-pci
> 0000:51:00.3 'Ethernet Controller X710 for 10GbE SFP+ 1572'
> unused=i40e,vfio-pci
> 0000:8a:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572'
> unused=i40e,vfio-pci
> 0000:8a:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572'
> unused=i40e,vfio-pci
> 0000:8a:00.2 'Ethernet Controller X710 for 10GbE SFP+ 1572'
> unused=i40e,vfio-pci
> 0000:8a:00.3 'Ethernet Controller X710 for 10GbE SFP+ 1572'
> unused=i40e,vfio-pci
>
Please try the following:
echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
dpdk-devbind.py -b vfio-pci 8a:00.*
Does anything change then?
/Bruce
PS: For mailing list discussions, please don't top-post. Replies are easier
to follow if posted immediately below the relevant content.
> On Tue, Feb 21, 2023 at 9:37 PM Bruce Richardson
> <[1]bruce.richard...@intel.com> wrote:
>
> On Tue, Feb 21, 2023 at 09:30:15PM +0530, Nagendra Prabhu A T wrote:
> > HI Bruce,
> > Thanks for your reply.
> > I have removed the binding of all other ports. So , i can
> confirm that
> > #2 is taken care of.
> > I tried using a different driver "uio_pci_generic". I still see
> the
> > same issue for that driver as well.
> > The problem seems to be because the write operation is not
> happening in
> > "bind" file.
> > Infact tried doing the following step manually. That also
> failed
> > echo sh -c 0000:51:00.0 >
> /sys/bus/pci/drivers/uio_pci_generic/bind
> > bash: echo: write error: No such device
> The "sh -c" doesn't look right in that command. It should just echo
> the
> device id to the bind file. However, it's generally recommended just
> to use
> the devbind script, as more writes to sysfs may be necessary first,
> e.g. to
> register the device ids first.
> > I have required permission for the file.
> > I tried doing with "sudo"
> > I dont have selinux running
> > So not sure whats blocking me. Infact , even
> > "cat /sys/bus/pci/drivers/uio_pci_generic/bind" is failing
> > Can you please help.
> To track down issues other than the obvious, I think we need more
> information. For example, what NIC card is this? Are there any
> useful error
> messages in dmesg?
> /Bruce
>
> References
>
> 1. mailto:bruce.richard...@intel.com
