@gleveque Hello

Can you retry with an up-to-date XCP-ng 8.3 host?
PCI expansion ROM are now enabled when doing pass-through.
The guest VM can now access the ROM bar.

Regards,

Yann

FYI this is not being forgotten, we still have a card about this assigned to someone, it will just take a bit more time than I thought before we work on this.
I'll send updates here when we have new elements.
Regards,
Yann