Avoid creation of /dev/kvm in Xenial KVM virtual machines on s390x
Bug #1735420 reported by
Frank Heimes
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu on IBM z Systems |
Won't Fix
|
Low
|
Canonical Kernel Team | ||
linux (Ubuntu) |
Triaged
|
Medium
|
Canonical Kernel Team | ||
Xenial |
Triaged
|
Medium
|
Canonical Kernel Team |
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)
Changed in ubuntu-z-systems: | |
assignee: | nobody → Canonical Kernel Team (canonical-kernel-team) |
tags: | added: kernel-da-key |
Changed in ubuntu-z-systems: | |
importance: | Undecided → Medium |
Changed in ubuntu-z-systems: | |
status: | New → Triaged |
Changed in linux (Ubuntu): | |
status: | New → Triaged |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Xenial): | |
importance: | Undecided → Medium |
status: | New → Triaged |
Changed in linux (Ubuntu): | |
assignee: | nobody → Canonical Kernel Team (canonical-kernel-team) |
Changed in linux (Ubuntu Xenial): | |
assignee: | nobody → Canonical Kernel Team (canonical-kernel-team) |
tags: | added: cscc |
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Note that the KVM kernel side in Xenial does not support nested at all. The confusion is caused by the fact that something seems to create /dev/kvm even when running in a KVM VM. Nested KVM support in the kernel was added (but disabled by default) around Zesty (4.10 kernels).