I am on unraid 6.12.6 and am seeing this same error in my windows 11 vm logs when passing through a 3060ti gpu on and Intel 13900k system. I have the gpu stubbed out and the vm starts but have no idea how to fix the vm so the errors don't occur. @ich777 and @SimonF, I tried the below and it did not resolve the issue, any ideas?
Update:
If I use the commands above and install OVMF for QEMU - edk2-stable202208, the errors in the log go away. I did this working my way back from the newest version and all of the other versions did produce the errors in the log.