If they switch GVT-g for SR-IOV that shouldn't affect the use of VFIO-Mdev on consumer devices (the primary API we use).
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/drive...
It may be that they're changing internal APIs used for device mediation which wouldn't surprise me given both AMD and Nvidia use SR-IOV but only Intel uses GVT-g.