On Thu, Feb 04, 2021 at 12:05:22PM +1100, Alexey Kardashevskiy wrote: > It is system firmware (==bios) which puts stuff in the device tree. The > stuff is: > 1. emulated pci devices (custom pci bridges), one per nvlink, emulated by > the firmware, the driver is "ibmnpu" and it is a part on the nvidia driver; > these are basically config space proxies to the cpu's side of nvlink. > 2. interconnect information - which of 6 gpus nvlinks connected to which > nvlink on the cpu side, and memory ranges. So what is this vfio_nvlink driver supposed to be bound to? The "emulated pci devices"? A real GPU function? A real nvswitch function? Something else? Jason
