The VFIO changes for the Linux 5.13 kernel aren’t particularly exciting this cycle but one of the changes does raise some eyebrows with the VFIO NVIDIA NVLink2 driver being removed. This driver is being removed as it shouldn’t have been even added in the first place for lack of an open-source client/user exercising it…

Source: Phoronix – Linux 5.13 Yanks A NVIDIA NVLink Driver For Lack Of Open-Source User