Mainline Kernel 4.8 does not seem to have the patch included: ubuntu@ubu-vm-01:~$ uname -a Linux ubu-vm-01 4.8.0-040800-generic #201610022031 SMP Mon Oct 3 02:27:31 UTC 2016 s390x s390x s390x GNU/Linux ubuntu@ubu-vm-01:~$ kvm-ok INFO: /dev/kvm exists KVM acceleration can be used ubuntu@ubu-vm-01:~$ ls -la /dev/kvm crw------- 1 root root 10, 232 Mar 20 05:16 /dev/kvm
Knowing that it is in 4.13, I tried mainline 4.10 as well and - yes - it must have the patch: ubuntu@ubu-vm-01:~$ uname -a Linux ubu-vm-01 4.10.0-041000-generic #201702191831 SMP Mon Feb 20 00:15:43 UTC 2017 s390x s390x s390x GNU/Linux ubuntu@ubu-vm-01:~$ kvm-ok INFO: /dev/kvm does not exist HINT: sudo modprobe kvm INFO: For more detailed results, you should run this as root HINT: sudo /usr/sbin/kvm-ok ubuntu@ubu-vm-01:~$ ls -la /dev/kvm ls: cannot access '/dev/kvm': No such file or directory ubuntu@ubu-vm-01:~$ So looks like the patch came in with either 4.9 or 4.10 (probably 4.10). -- 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/1735420 Title: Avoid creation of /dev/kvm in Xenial KVM virtual machines on s390x Status in Ubuntu on IBM z Systems: Triaged Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Bug description: Since nested virtualization with KVM is not supported on s390x, please disable this in Xenial - in case it's doable with reasonable effort. (I think it was already disabled for later Ubuntu releases ... was also discussed on IRC) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1735420/+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
