Comment 18 for bug 1933173

Ok, so the commits are definitely _not_ in 81,
but got introduced with 82 (which is not available as binary kernel, since it got superseded by 83):

~/ubuntu-focal-master-next$ git describe --abbrev=0
Ubuntu-5.4.0-83.93
~/ubuntu-focal-master-next$ git log --oneline --grep "s390/uv: add prot virt guest/host indication files"
319423704db0 s390/uv: fix prot virt host indication compilation
aee56e7b76eb s390/uv: add prot virt guest/host indication files
~/ubuntu-focal-master-next$ git tag --contains 319423704db0 | grep ^Ubuntu
Ubuntu-5.4.0-82.92
Ubuntu-5.4.0-83.93
~/ubuntu-focal-master-next$ git tag --contains aee56e7b76eb | grep ^Ubuntu
Ubuntu-5.4.0-82.92
Ubuntu-5.4.0-83.93

Since the code obviously works if being integrated into the hirsute 5.11 kernel, I assume that some patches are missing that need to be picked for the 5.4 kernel on top of these two.

Would you mind reaching out to Vikor and checking what might be missing for the 5.4 kernel? (see comment #2)