<div dir="ltr"><div dir="ltr"><div dir="ltr">These are the messages i am seeing dmesg<div><br></div><div><div>[16588.298660] vfio-pci: probe of 0000:8a:00.2 failed with error -22</div><div>[16591.574630] i40e 0000:8a:00.3: i40e_ptp_stop: removed PHC on enp138s0f3</div><div>[16593.138613] vfio-pci: probe of 0000:8a:00.3 failed with error -22</div><div>[16593.138674] vfio-pci: probe of 0000:8a:00.3 failed with error -22</div><div>[16627.551866] vfio-pci: probe of 0000:51:00.0 failed with error -22</div><div>[16627.551922] vfio-pci: probe of 0000:51:00.0 failed with error -22</div><div>[16716.344530] vfio-pci: probe of 0000:51:00.0 failed with error -22</div><div>[16716.344585] vfio-pci: probe of 0000:51:00.0 failed with error -22</div><div>[17859.876566] vfio-pci: probe of 0000:51:00.0 failed with error -22</div><div>[17859.876622] vfio-pci: probe of 0000:51:00.0 failed with error -22</div><div>root@nat-kvm:/home/nat# cat /boot/config-$(uname -r) | grep NOIOMMU</div><div>CONFIG_VFIO_NOIOMMU=y</div><div>root@nat-kvm:/home/nat#</div></div><div><br></div><div><br></div><div><br></div><div>Interface type :</div><div><br></div><div><div>Other Network devices</div><div>=====================</div><div>0000:51:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' unused=i40e,vfio-pci</div><div>0000:51:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' unused=i40e,vfio-pci</div><div>0000:51:00.2 'Ethernet Controller X710 for 10GbE SFP+ 1572' unused=i40e,vfio-pci</div><div>0000:51:00.3 'Ethernet Controller X710 for 10GbE SFP+ 1572' unused=i40e,vfio-pci</div><div>0000:8a:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' unused=i40e,vfio-pci</div><div>0000:8a:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' unused=i40e,vfio-pci</div><div>0000:8a:00.2 'Ethernet Controller X710 for 10GbE SFP+ 1572' unused=i40e,vfio-pci</div><div>0000:8a:00.3 'Ethernet Controller X710 for 10GbE SFP+ 1572' unused=i40e,vfio-pci</div></div><div><br></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 21, 2023 at 9:37 PM Bruce Richardson <<a href="mailto:bruce.richardson@intel.com">bruce.richardson@intel.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Tue, Feb 21, 2023 at 09:30:15PM +0530, Nagendra Prabhu A T wrote:<br>
> HI Bruce,<br>
> Thanks for your reply.<br>
> I have removed the binding of all other ports. So , i can confirm that<br>
> #2 is taken care of.<br>
> I tried using a different driver "uio_pci_generic". I still see the<br>
> same issue for that driver as well.<br>
> The problem seems to be because the write operation is not happening in<br>
> "bind" file.<br>
> Infact tried doing the following step manually. That also failed<br>
> echo sh -c 0000:51:00.0 > /sys/bus/pci/drivers/uio_pci_generic/bind<br>
> bash: echo: write error: No such device<br>
<br>
The "sh -c" doesn't look right in that command. It should just echo the<br>
device id to the bind file. However, it's generally recommended just to use<br>
the devbind script, as more writes to sysfs may be necessary first, e.g. to<br>
register the device ids first.<br>
<br>
> I have required permission for the file.<br>
> I tried doing with "sudo"<br>
> I dont have selinux running<br>
> So not sure whats blocking me. Infact , even<br>
> "cat /sys/bus/pci/drivers/uio_pci_generic/bind" is failing<br>
> Can you please help.<br>
<br>
To track down issues other than the obvious, I think we need more<br>
information. For example, what NIC card is this? Are there any useful error<br>
messages in dmesg?<br>
<br>
/Bruce<br>
</blockquote></div>