On Wed, Feb 03, 2021 at 09:54:48AM -0400, Jason Gunthorpe wrote: > If people are accepting that these device-specific drivers are > required then we need to come to a community consensus to decide what > direction to pursue: > > * Do we embrace the driver core and use it to load VFIO modules like a > normal subsytem (this RFC) > > OR > > * Do we make a driver-core like thing inside the VFIO bus drivers and > have them run their own special driver matching, binding, and loading > scheme. (May RFC) > > Haven't heard a 3rd option yet..
The third option would be to use the driver core to bind the VFIO submodules. Define a new bus for it, which also uses the normal PCI IDs for binding, and walk through those VFIO specific drivers when vfio_pci is bound to a device. That would provide a pretty clean abstraction and could even keep the existing behavior of say bind to all VGA devices with an Intel vendor ID (even if I think that is a bad idea).
