Hi, I investigated this a bit. TL;DR - this is intentionally off by default and opt in. To use it you need: - in the host set kvm.nested=1 - depending on your other virt stack set you might need to set host-passthrough or the sief2 feature (qemu -cpu host or ...,sief2=1)
Then the guest will have virt features "sie" in /proc/cpuinfo | grep features If anything we should consider backporting the "needs opt in" to Xenial. That would be the following patch: commit a411edf1320ed8fa3b4560902ac4e033c4a72bcf Author: David Hildenbrand <[email protected]> Date: Tue Feb 2 15:41:22 2016 +0100 KVM: s390: vsie: add module parameter "nested" Let's be careful first and allow nested virtualization only if enabled by the system administrator. In addition, user space still has to explicitly enable it via SCLP features for it to work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1732162 Title: Zesty / Artful zKVM does not have /dev/kvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1732162/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
