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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1903612 Title: Can't Load vfio-pci Module on Ubuntu 18.04 HWE Kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kmod/+bug/1903612/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
