refactor the i915 GVT support and move to the modern mdev API v3

[Jason Gunthorpe]

On Thu, Apr 14, 2022 at 12:20:42PM +0000, Wang, Zhi A wrote:
> On 4/13/22 11:20 PM, Jason Gunthorpe wrote:
> > 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
> > 
> 
> Hi Jason:
> 
> I updated the branch. You can check if those are what you are expecting. :)

This is better, except for the first commit:

 [DON'T PULL] drm/i915/dmc: split out dmc registers to a separate file
 THIS PATCH WILL GO THROUGH DRM-INTEL-NEXT TO UPSTREAM

 Clean up the massive i915_reg.h a bit with this isolated set of
 registers.

 v2: Remove stale comment (Lucas)

Clean the commit message and send that as a proper PR to
drm-intel-next, then everything else is OK.

Jason