Comment 21 for bug 1921134

Verified the shim on focal.

* xnox verified windows booting on hirsute, binaries are same
* I verified maas style chained netbooting
* Verified the interactions with mokutil
+ Verified loading dkms modules
+ Verified end2end IRL boot on ThinkPad X230 with ZFS
- Did not verify actual Maas boot, but confident enough that we have checked 15.4 shim for that and the additional patches are not going to break it
- Did not check fwupd, fwupd focal SRU needs to be accepted to. Checked that the load option parsing is correct for that purpose on our side
- Did not chainload other distros due to lack of such distros in my VM setups, but given that windows and shim chainloading works, happy enough. People can still boot other distros via UEFI menu anyway, we should phase out chainloading them.