------- Comment From jos...@br.ibm.com 2018-05-09 18:03 EDT------- addendum: According to my last investigation[1] the problem is in the blk_mq only. If we don't use blk_mq devices we can hotplug and hot-unplug CPUs without any problem.
[1] https://bugzilla.linux.ibm.com/show_bug.cgi?id=167294 comments 47, 48, and 49. ** Bug watch added: bugzilla.linux.ibm.com/ #167294 https://bugzilla.linux.ibm.com/show_bug.cgi?id=167294 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759723 Title: ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle hangs after hotplug CPU add operation. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1759723/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
