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Add support for this to be an additional OVMF instead of a permanent and global one #1
This worked for me without modifying the OVMF used for every VM on the server.
I've created a separate package that doesn't conflict with the OVMF installed by Proxmox. So you can use similar steps to the above to use a patched OVMF. The package I created also resolves the graphical glitch on cold-boot issue caused by the screen resolution not taking.