[Intel-gfx] refactor the i915 GVT support and move to the modern mdev API v3

[Jason Gunthorpe]

On Wed, Apr 13, 2022 at 11:13:06PM +0000, Wang, Zhi A wrote:
> Hi folks:
> 
> Thanks so much for the efforts. I prepared a branch which contains all our patches.The aim of the branch is for the VFIO maintainers to pull the whole bunch easily after the drm-intel-next got merged through drm (as one of the MMIO patches depends on a patch in drm-intel-next).
> 
> I dropped patch 4 and patch 5 as they have been covered by Jani's patches. Some conflicts was solved.
> QA is going to test it today. 
> 
> You can find it here:
> 
> git clone https://github.com/intel/gvt-linux -b for-christoph

There are alot of extra commits on there - is it possible to base this
straight on rc1 not on some kind of existing DRM tree?

Why did you choose drm/i915/fbc: Call intel_fbc_activate() directly
from frontbuffer flush  as a base?

Jason