Hi Harald, well, this is an Ubuntu 22.04 feature (like the Launchpad ticket title indicated), hence need to be used/tested on a Ubuntu 22.04 codename 'jammy' system. (You may upgrade your 20.04 / focal system directly to 22.04 / jammy using 'do-release-upgrade -d' - '-d' because jammy is still in development).
Once on a 22.04 / jammy system, things are relatively straight forward - let me go into the details: First of all check what's available in the (jammy) archives, in case of this tickets, it's about the kernel (package called 'linux-generic'): $ rmadison --arch=s390x linux-generic | grep $(lsb_release -cs) linux-generic | 5.15.0.25.27 | jammy | s390x Well, this tells us that there is only one kernel available, and that one is in jammy(-release) and there is no kernel in jammy-proposed right now. Means the kernel is already rolled out and you don't need -proposed anymore. So you can go with the kernel that you get by default if running jammy/22.04. [ If there is another kernel in -proposed for testing, things look like in this mockup: linux-generic | 5.15.0.25.27 | jammy | s390x linux-generic | 5.15.0.26.30 | jammy-proposed | s390x ] ___ Anyway, just for the reason of completeness, here are the steps needed in case a kernel from -proposed should be installed and tested: 1) make sure your system is at the latest level: sudo apt -y -q update && sudo apt -y -q full-upgrade 2) activate '-proposed' with: sudo add-apt-repository -y "deb http://us.ports.ubuntu.com/ubuntu-ports/ $(lsb_release -sc)-proposed main universe" (and update the package index with 'sudo apt -y -q update' if not already triggered automatically) 3) now check for the available versions that can be installed: $ apt-cache policy linux-generic linux-generic: Installed: 5.15.0.25.27 Candidate: 5.15.0.26.30 Version table: ... And the version table shows you where the kernels are coming from (either main, proposed, updates, or security). [Btw. ignore the right-most digit, since it's just the build/meta digit. If there is a request to test 5.15.0-25.25, it usually points to the kernel source package, and the binary kernel is (in this case) 5.15.0.25.27. So it's save to ignore '27'.] 4) update the kernel by either 'installing' the latest one that is available, like: sudo apt install linux-generic or explicitly install a specific version, like: sudo apt install linux-generic=5.15.0.26.30 5) don't forget to reboot afterwards to activate the newly installed kernel. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1959547 Title: [22.04 FEAT] zcrypt DD: Exploitation Support of new IBM Z Crypto Hardware (kernel part) Status in Ubuntu on IBM z Systems: Fix Released Status in linux package in Ubuntu: Fix Released Bug description: zcrypt DD: Exploitation Support of new IBM Z Crypto Hardware - kernel part To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1959547/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
