On Tue, Feb 21, 2023 at 9:57 PM Bruce Richardson <bruce.richard...@intel.com> wrote:
> 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. > Thanks Bruce, the above solution worked. root@nat-kvm:/usr/src/dpdk-22.11/usertools# echo 1 > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode root@nat-kvm:/usr/src/dpdk-22.11/usertools# dpdk-devbind.py -b vfio-pci 8a:00.* root@nat-kvm:/usr/src/dpdk-22.11/usertools# dpdk-devbind.py --status Network devices using DPDK-compatible driver ============================================ 0000:8a:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=vfio-pci unused=i40e 0000:8a:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=vfio-pci unused=i40e 0000:8a:00.2 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=vfio-pci unused=i40e 0000:8a:00.3 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=vfio-pci unused=i40e Thanks > > > 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 >
