[Intel-gfx] [PATCHv3] drm/i915: Support Async Flip on Linear buffers

[Ville Syrjälä]

On Wed, Aug 24, 2022 at 03:02:33AM +0000, Murthy, Arun R wrote:
> > -----Original Message-----
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > Sent: Tuesday, August 23, 2022 6:27 PM
> > To: Murthy, Arun R <arun.r.murthy at intel.com>
> > Cc: intel-gfx at lists.freedesktop.org; Shankar, Uma <uma.shankar at intel.com>
> > Subject: Re: [PATCHv3] drm/i915: Support Async Flip on Linear buffers
> > 
> > On Mon, Jul 04, 2022 at 09:45:48PM +0530, Arun R Murthy wrote:
> > > Intel Gen do support Async Flip is supported on linear buffers. Since
> > > we didn't had a use case, it was not enabled. Now that as part of
> > > hybrid graphics for unsupported hardware pixel formats, its being
> > > converted to linear memory and then flipped, hence enabling!
> > > This patch enables support for async on linear buffer.
> > >
> > > v2: added use case
> > > v3: enabled async on linear for pre Gen 12 as well
> > 
> > I didn't think it went all the way back to gen9?
> > 
> It's the same as other buffers. I have just added support for linear buffer in the present async flip path, so the platforms on which the async flip is supported will support linear buffer as well.

I know what the patch does. But I don't think bspec agrees with it.

> 
> > Also we still don't seem to have any tests for this stuff...
> 
> There is an IGT patch in queue, once this patch is merged, the IGT patch will be floated.

Do the igt stuff first. Then you can at least get some CI results for
this stuff.

-- 
Ville Syrjälä
Intel