Re: [Qemu-devel] [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

[Chris Wilson]

On Tue, Nov 24, 2015 at 12:19:18PM +0100, Daniel Vetter wrote:
> Downside: Tracking mapping changes on the guest side won't be any easier.
> This is mostly a problem for integrated gpus, since discrete ones usually
> require contiguous vram for scanout. I think saying "don't do that" is a
> valid option though, i.e. we're assuming that page mappings for a in-use
> scanout range never changes on the guest side. That is true for at least
> all the current linux drivers.

Apart from we already suffer limitations of fixed mappings and have patches
that want to change the page mapping of active scanouts.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre