The minimal patch set for the jammy master-next kernel I've used is: 3d79d0079cae sched: Improve try_invoke_on_locked_down_task() 914f948c313a sched,rcu: Rework try_invoke_on_locked_down_task() 702fa42757b0 sched,livepatch: Use task_call_func() 5516e7085fca sched: Simplify wake_up_*idle*() 86db6bfb3dc8 sched,livepatch: Use wake_up_if_idle() 6fe095210f38 sched: Improve wake_up_all_idle_cpus() take #2 4168d69c57d1 s390/entry: remove unused expoline thunk a73c3438e6f2 s390: remove unused expoline to BC instructions 1e3807c786b1 s390/nospec: generate single register thunks if possible [ 0378d08bd3c3 s390/nospec: add an option to use thunk-extern ] ==> 0010-s390-nospec-add-an-option-to-use-thunk-extern.patch a7f928d3ef3a s390/nospec: align and size extern thunks 298b3cbf7d0e bug: Use normal relative pointers in 'struct bug_entry' [ 0013 - 816b355fa9ed s390/nospec: build expoline.o for modules_prepare target ] ==> 0013-s390-nospec-build-expoline.o-for-modules_prepare-tar.patch ==> 0014-Set-y-as-default-for-new-CONFIG_EXPOLINE_EXTERN-kern.patch
The two backports and the kernel option patch are attached. ** Attachment added: "lp1639924_patches.tgz" https://bugs.launchpad.net/ubuntu-z-systems/+bug/1639924/+attachment/5614735/+files/lp1639924_patches.tgz -- 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/1639924 Title: Kernel livepatch support for for s390x Status in Ubuntu on IBM z Systems: Triaged Status in gcc-11 package in Ubuntu: Fix Released Status in kpatch package in Ubuntu: New Status in linux package in Ubuntu: Fix Committed Status in gcc-11 source package in Jammy: Fix Released Status in kpatch source package in Jammy: New Status in linux source package in Jammy: New Status in gcc-11 source package in Kinetic: Fix Released Status in kpatch source package in Kinetic: New Status in linux source package in Kinetic: Fix Committed Bug description: Kernel live-patch is afaik fully upstream and available for 'all' platforms (incl. s390x). But the kpatch-build tool does only support amd64 as of today. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1639924/+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