Non-fixed builds do not accept the required configuration at all.

error: XML document failed to validate against schema: Unable to validate doc 
against /usr/share/libvirt/schemas/domain.rng
Extra element devices in interleave
Element domain failed to validate content

Failed. Try again? [y,n,i,f,?]:

But specifying cid/iommu is reuqired to be usable in SE environments.


Now I upgraded to the new builds that are in proposed.
  Unpacking libvirt-daemon-system (6.0.0-0ubuntu8.7) over (6.0.0-0ubuntu8.5) ...
  Unpacking libvirt-daemon-system (6.6.0-1ubuntu3.3) over (6.6.0-1ubuntu3.1) ...
Both worked without issues

With those the new config could be added.
That is one check passed \o/

But the second check I need IBM for.
We have discussed/thought that we can check the commandline that is generated 
and ignore that this is eventually to help an SE environment. But TBH in my 
case there is no iommu rendered in the commandline.

It is not even adding any -device vhost-vsock-ccw or such. Maybe in my 
restricted environment another pre-check fails.
I've had a focal LPAR around that I was able to use, there things work as 
expected.

ubuntu@s1lp5:~$ sudo grep -e iommu -e vsock /var/log/libvirt/qemu/h-test.log 
-device 
vhost-vsock-ccw,id=vsock0,guest-cid=3,vhostfd=27,iommu_platform=on,devno=fe.0.0005
 \

I just can't bump this to groovy atm.
So I've used a 2nd level KVM for groovy.
Finally there I can confirm as well:
ubuntu@g-test:~$ sudo grep -e iommu -e vsock /var/log/libvirt/qemu/testvm.log
-device 
vhost-vsock-ccw,id=vsock0,guest-cid=3,vhostfd=25,iommu_platform=on,devno=fe.0.0005
 \

So - both releases verified

** Tags removed: verification-needed verification-needed-focal 
verification-needed-groovy
** Tags added: verification-done verification-done-focal 
verification-done-groovy

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https://bugs.launchpad.net/bugs/1913266

Title:
  [UBUNTU 20.04] Vsock can't be used with Secure Execution, required
  argument not supported

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