Oh, that question was for me, missed it :)
Basically everything older than 2.8
s390-ccw-virtio-2.4 s390-ccw-virtio-2.5 s390-ccw-virtio-2.6 s390-ccw-virtio-2.7
+ some distro forks of that (Christian might want to comment on that).
The "missing KVM support" is harder to catch. It can strike with any machine (on fairly old kernels).
Oh, that question was for me, missed it :)
Basically everything older than 2.8
s390-ccw-virtio-2.4
s390-ccw-virtio-2.5
s390-ccw-virtio-2.6
s390-ccw-virtio-2.7
+ some distro forks of that (Christian might want to comment on that).
The "missing KVM support" is harder to catch. It can strike with any machine (on fairly old kernels).