Re: [PATCH v3 7/7] [wip] virtio-gpu: add page flip support
From: Gerd Hoffmann
Date: Mon May 30 2016 - 08:07:03 EST
Hi,
> > But I'll take you up on the implied offer to help out and test ;-)
>
> git://people.freedesktop.org/~danvet/drm stuff
Tried that branch.
> Would be really awesome if you could test this on virtio. Note that the
> new nonblocking helpers require that your atomic backend gets the drm
> event handling right. So if there's a bug in that logic then you'll see
> lots of dmesg noise about waits timing out (after 10s of waiting). From a
> quick inspection it should work though.
No timeouts. Yay!
But it seems crtcs can be (temporarely) disabled now, so we might have
to pick up the crtc from old_state in virtio_gpu_plane_atomic_update to
figure which virtual output needs to be turned off. Ran into this last
week already. Happened with multihead setups only, but the same patch
fixes this one too ;)
https://lists.freedesktop.org/archives/dri-devel/2016-May/108772.html
cheers,
Gerd