[vfio-users] What's the user scenario for UPT mode of IGD

[Gerd Hoffmann]

On Wed, 2017-10-11 at 10:33 +0000, Daimon Wang wrote:
> Hi,
>     The qemu doc of igd says there're 2 modes for IGD pass through,
> legacy and UPT. And Alex's blog says in UPT mode, one can set a
> display card "mirror" the IGD, to get the accelerated video output.
>     But I'm not sure how to setup such a "mirror". E.g. in a Win7 VM,
> is it in the "Display settings", and I should set my 2 monitor work
> in "mirror" mode? Suppose I'm using qxl as the default VGA and
> "mirror" the IGD, I can then get 3D output on qxl and view the result
> through spice? This sounds very cool but I don't think the OS is
> clever enough to make it.

Windows 10 can handle it.  Didn't try Windows 7 though.

cheers,
  Gerd