Re: [Qemu-devel] [PATCH v4 0/7] vfio: add display support

[Gerd Hoffmann]

On Fri, Feb 23, 2018 at 10:05:17AM +0100, Gerd Hoffmann wrote:
> > Hi Gerd,
> > 
> > It's a little bit concerning that the only way we can test the
> > region-based display support is with proprietary drivers that nobody
> > but NVIDIA has at this point.  Have you considered adding region-based
> > display support to the mdev sample tty driver?  I know it sounds
> > ridiculous for a serial device to have a display, but the vfio display
> > region support isn't really tied to the functionality of the base mdev
> > device.  We could have it simply display a static test pattern, just so
> > we can test the end to end code path without a dependency on a closed
> > vendor driver.
> 
> Hmm, have to think about that.  Some way to change the display content
> would be nice as you can see whenever display updates are working then.

https://www.kraxel.org/cgit/linux/log/?h=vfio-sample-display

Comes with host mdev driver and guest framebuffer driver.

enjoy,
  Gerd