The OP is referring to GPU passthrough setup[1], which passes through a GPU from Linux host to Windows guest (e.g. for gaming). This is done by detaching the GP

The OP is referring to GPU passthrough setup[1], which passes through a GPU from Linux host to Windows guest (e.g. for gaming). This is done by detaching the GPU from the host and pass it to the VM, thus most setup requires two GPUs since one need to remain with the host (although single GPU passthrough is also possible). Nvidia used to detect if the host is a VM and return error code 43 blocking them from being used (for market segmentation between GeForce and Quadro). This is usually solved by either patching VBIOS or hiding KVM from the guest, but it was painful and unreliable. Nvidia removed this limitation with RTX 30 series. This vGPU feature unlock (TFA) would allow GPU to be virtualized without requiring the GPU to first be detached from the host, vastly simplify the setup and open up the possibility of having multiple VMs running on a single GPU, all with its own dedicated vGPU. [1]: https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVM...