From: Ville Syrjälä
The cursor hardware only does sync updates, and thus the hardware
will be scanning out from the old fb until the next start of vblank.
So in order to make the legacy cursor fastpath actually safe we
should not unpin the old fb until we're sure the hardware has
ceased accessing
; Subject: [Intel-gfx] [PATCH 2/3] drm/i915: Use vblank worker to unpin old
> > legacy
> > cursor fb safely
> >
> > From: Ville Syrjälä
> >
> > The cursor hardware only does sync updates, and thus the hardware will be
> > scanning out from the old fb until
> -Original Message-
> From: Intel-gfx On Behalf Of Maarten
> Lankhorst
> Sent: Thursday, November 9, 2023 9:05 PM
> To: intel-gfx@lists.freedesktop.org
> Subject: [Intel-gfx] [PATCH 2/3] drm/i915: Use vblank worker to unpin old
> legacy
> cursor fb safely
From: Ville Syrjälä
The cursor hardware only does sync updates, and thus the hardware
will be scanning out from the old fb until the next start of vblank.
So in order to make the legacy cursor fastpath actually safe we
should not unpin the old fb until we're sure the hardware has
ceased accessing
