Hello Youhei, we have found the `modinfo` command (from the kmod package[1]) will need to be at least with version 27 (which is available in Focal) to support reading information from built-in modules.
To be more precise, with these commits: https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git/commit/?h=v27&id=60084cf1cb24dc3a257976c0d539a4c3ffda5db5 https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git/commit/?h=v27&id=73eed2aba3cbe18bbda40f18f7bc32e8de1ec81f https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git/commit/?h=v27&id=b866b2165ae6cf18fb26b635f4a7ee57c0334731 https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git/commit/?h=v27&id=e7e2cb61fa9f1db3429d91ef6accff549500d268 I have these changes backported here: https://code.launchpad.net/~cypressyew/ubuntu/+source/kmod/+git/kmod/+ref/builtin-test If you want to give this a try, you can clone this repo and do the following: git clone -b builtin-test https://git.launchpad.net/~cypressyew/ubuntu/+source/kmod sudo apt install gtk-doc-tools autoconf automake libtool cd kmod ./autogen.sh ./configure CFLAGS='-g -O2' --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib --with-rootprefix= --with-rootlibdir=/lib make cd tools ./modinfo vfio-pci This will fix this modinfo issue, it can print the built-in module info correctly. Hopefully we can push this to Ubuntu archive later. Regarding DPDK, I have no experience with it, not sure if it will use the modinfo command here (a quick check with their repository[2] I didn't see it calling modinfo directly.) I found this article with keyword "unused vfio-pci dpdk" on the Internet, it looks like you will have to bind the driver to the device with something like: # dpdk-devbind -b vfio-pci 0000:01:00.0 0000:01:00.1 Hope this helps: https://www.miraclelinux.com/tech-blog/gofc5x [1] https://launchpad.net/ubuntu/+source/kmod [2] https://github.com/DPDK/dpdk -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe in Ubuntu. https://bugs.launchpad.net/bugs/1903612 Title: Can't Load vfio-pci Module on Ubuntu 18.04 HWE Kernel Status in kmod package in Ubuntu: New Status in linux-hwe package in Ubuntu: Confirmed Status in kmod source package in Bionic: New Status in linux-hwe source package in Bionic: Confirmed Bug description: Can't Load vfio-pci Module on Ubuntu 18.04 HWE Kernel ``` ubuntu@ubuntu-2:~$ modinfo vfio-pci modinfo: ERROR: Module vfio-pci not found. ubuntu@ubuntu-2:~$ uname -a Linux DL360G9-2 5.4.0-52-generic #57~18.04.1-Ubuntu SMP Thu Oct 15 14:04:49 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux ``` But Generic kernel is Working. ``` ubuntu@ubuntu-4:~$ modinfo vfio-pci filename: /lib/modules/4.15.0-122-generic/kernel/drivers/vfio/pci/vfio-pci.ko description: VFIO PCI - User Level meta-driver author: Alex Williamson <alex.william...@redhat.com> license: GPL v2 version: 0.2 srcversion: 1E92A800B94EAE7B392AD50 depends: vfio,irqbypass,vfio_virqfd retpoline: Y intree: Y name: vfio_pci vermagic: 4.15.0-122-generic SMP mod_unload signat: PKCS#7 signer: sig_key: sig_hashalgo: md4 parm: ids:Initial PCI IDs to add to the vfio driver, format is "vendor:device[:subvendor[:subdevice[:class[:class_mask]]]]" and multiple comma separated entries can be specified (string) parm: nointxmask:Disable support for PCI 2.3 style INTx masking. If this resolves problems for specific devices, report lspci -vvvxxx to linux-...@vger.kernel.org so the device can be fixed automatically via the broken_intx_masking flag. (bool) parm: disable_vga:Disable VGA resource access through vfio-pci (bool) parm: disable_idle_d3:Disable using the PCI D3 low power state for idle, unused devices (bool) ``` How to use vfio-pci module in HWE kernel? --- ProblemType: Bug AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.4.0-52-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu7.16 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/midiC0D0', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2020-11-09 (0 days ago) InstallationMedia: Ubuntu-Server 18.04.5 LTS "Bionic Beaver" - Release amd64 (20200806.1) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' MachineType: VMware, Inc. VMware Virtual Platform Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 svgadrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-52-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro maybe-ubiquity ProcVersionSignature: Ubuntu 5.4.0-52.57~18.04.1-generic 5.4.65 RelatedPackageVersions: linux-restricted-modules-5.4.0-52-generic N/A linux-backports-modules-5.4.0-52-generic N/A linux-firmware 1.173.19 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' Tags: bionic uec-images Uname: Linux 5.4.0-52-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lxd plugdev sudo _MarkForUpload: True dmi.bios.date: 07/22/2020 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: 6.00 dmi.board.name: 440BX Desktop Reference Platform dmi.board.vendor: Intel Corporation dmi.board.version: None dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 1 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd07/22/2020:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A: dmi.product.name: VMware Virtual Platform dmi.product.version: None dmi.sys.vendor: VMware, Inc. 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