On Thu, 6 Nov 2025 10:43:23 +0300 Michael Tokarev <[email protected]> wrote: > FWIW, I didn't even know until today that ovmf can be used > to boot xen domains, - I thought it only works with regular > bios packages, not UEFI. To me, using UEFI has always been > a no-go due to them being just too slow.
I just ran into this bug because of the need for a Win11-DomU. Turns out, if you want to create a WIn11-DomU, you need UEFI boot.
But even if you have UEFI boot, you also need a vTPM module for Win11, which vanilla Xen doesn't provide (yet?). AFAIK, XenServer and XCP-ng provide a vTPM module, and then there are customized solutions.
Paul
