Re: [PATCH v3 7/7] [wip] virtio-gpu: add page flip support

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  Hi,

> > Right now the virtual outputs are linked to drm_crtc.  To apply any
> > changes I need to lookup the crtc to figure which virtual output should
> > be updated.

> > So, setting active_only should make sure I have a valid crtc pointer on
> > plane updates, right?  It probably also skips the disable + enable crtc
> > steps on commit?  What happens when outputs are disabled?

> Nah, I just misunderstood your patch. If it's all about finding the
> corresponding crtc, then you're all good.

Yes, it's all about finding the crtc.

> I thought there was some
> other reason (like the virtual hw getting upset about certain things).

virtio wouldn't be upset.

It's a pointless exercise though to first disable the output, just to
re-enable it the next moment with the new page-flipped framebuffer.  So
I guess I should look at the active_only thing nevertheless.

> btw can you pls drop an ack or r-b
> onto my virtio conversion? I already added your tested-by.

Grr, mail is not in my dri-devel folder.  Guess that is the <censored>
"avoid-duplicates" mailman option at work.

Feel free to just add the r-b too.  Or I'll send it for the next version
of the series.

cheers,
  Gerd

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