[Intel-gfx] [PATCH v3 15/16] drm/i915/pxp: black pixels on pxp disabled

[Ville Syrjälä]

On Fri, Apr 30, 2021 at 07:12:53AM +0000, Gupta, Anshuman wrote:
> 
> 
> > -----Original Message-----
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > Sent: Wednesday, April 28, 2021 12:26 AM
> > To: Gupta, Anshuman <anshuman.gupta at intel.com>
> > Cc: intel-gfx at lists.freedesktop.org; Vivi, Rodrigo <rodrigo.vivi at intel.com>;
> > Gaurav, Kumar <kumar.gaurav at intel.com>; Shankar, Uma
> > <uma.shankar at intel.com>; Ceraolo Spurio, Daniele
> > <daniele.ceraolospurio at intel.com>
> > Subject: Re: [PATCH v3 15/16] drm/i915/pxp: black pixels on pxp disabled
> > 
> > On Tue, Apr 27, 2021 at 04:15:04PM +0530, Anshuman Gupta wrote:
> > > When protected sufaces has flipped and pxp session is disabled,
> > > display black pixels by using plane color CTM correction.
> > >
> > > v2:
> > > - Display black pixels in aysnc flip too.	
> > 
> > We can't change any of that with an async flip.
> I was thinking of an scenario , when application flip the protected surfaces with synchronous flips
> and driver has enable the plane decryption, can application issue an intermediate async flip with
> protected surfaces afterwards ?
> If above is possible, is it possible to display black pixels in case of pxp session invalidation at the time of
> Plane commit?   

We'll just have to refuse the async flip if the session has
been invalidated.

-- 
Ville Syrjälä
Intel