On Thu, Feb 04, 2021 at 11:12:49AM +0200, Max Gurtovoy wrote: > But the PCI function (the bounded BDF) is GPU function or NVLINK function ? > > If it's NVLINK function then we should fail probing in the host vfio-pci > driver. > > if its a GPU function so it shouldn't been called nvlink2 vfio-pci driver. > Its just an extension in the GPU vfio-pci driver. I suspect the trivial and correct answer is that we should just drop the driver entirely. It is for obsolete hardware that never had upstream support for even using it in the guest. It also is the reason for keeping cruft in the always built-in powernv platform code alive that is otherwise dead wood.