I am doing some testing with GPU passthrough to VMs and in some cases the OVMF stops booting after a GPU passthrough.

I have figured out that it's related to some state stored in NVRAM by OVMF and as soon as I create another VM with the same disks it starts booting up.

I believe oVirt saves the NVRAM state.

 Is there a way to clear NVRAM for a VM without deleting it?

Regards,

Shantur