To avoid any regressions after upgrades, it's needed that Impish/21.10 is patched, too. (SIGP fix is already addressed for jammy in LP#/1959735)
I just check the impish master-next tree and the situation is the same like on focal. Just the following two need to be added to focal and impish: 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling -- 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/1962578 Title: [UBUNTU 20.04] Fix SIGP processing (KVM: s390) Status in Ubuntu on IBM z Systems: New Status in linux package in Ubuntu: In Progress Status in linux source package in Focal: New Status in linux source package in Impish: New Bug description: Decription: KVM: SIGP RESTART is reporting a CPU state 'stopped' after SIGP RESTART was issued, while it should report a 'busy' condition until the CPU is really started. The patches to fix this have already been picked for jammy/master- next: 812de04661c4 "KVM: s390: Clarify SIGP orders versus STOP/RESTART" 435d17955519 "KVM: s390: Add a routine for setting userspace CPU state" 4563bcad46bf "KVM: s390: Simplify SIGP Set Arch handling" For Ubuntu 20.04 the focal/master-next already contains: d74b0d2d38d3 KVM: s390: Clarify SIGP orders versus STOP/RESTART so we additionally need the following two upstream commits in focal 67cf68b6a5cc KVM: s390: Add a routine for setting userspace CPU state 8eeba194a32e KVM: s390: Simplify SIGP Set Arch handling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1962578/+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
