[PATCH 0/3] sample: vfio mdev display devices.

[Tian, Kevin]

> From: Alex Williamson
> Sent: Thursday, April 19, 2018 2:32 AM
> 
> That almost begins to look reasonable, but then we can only expose this
> for mdev devices, what if we were to hack a back door into a directly
> assigned GPU that tracks the location of active display in the
> framebuffer and implement the GFX_PLANE interface for that?  We have no
> sysfs representation for either the template or the actual device for
> anything other than mdev.  This inconsistency with physically assigned
> devices has been one of my arguments against enhancing mdev sysfs.
> 

One possible option is to wrap directly assigned GPU into a mdev. The
parent driver could be a dummy PCI driver which does basic PCI
initialization, and then provide hooks for vendor-specific hack. 

Thanks
Kevin