Bug#983357: Netinst crashes xen domU when loading kernel

[Phillip Susi]

Package: debian-installer
Version: 20201202

Every bullseye netinst image I have tried to boot in a xen domU has
crashed and rebooted the domU after choosing any entry from the boot
menu.  I thought there might have been something wrong with my xen
server, which was running Ubuntu 18.04, but I rebuilt it the other day
using bullseye as the dom0, and I still can't install bullseye in a
domU.