On Tue, May 20, 2014 at 03:03:41PM +0300, Ville Syrjälä wrote: > On Wed, May 14, 2014 at 08:51:11PM +0200, Daniel Vetter wrote: > > Now that we unconditionally dtrt when disabling/enabling crtcs we > > don't need any hacks any longer to keep the vblank logic sane when > > all the registers go poof. So let's rip it all out. > > Hmm. drm_update_vblank_count() will now see some kind of diff between > the last and current value when the registers got cloberred. So the > vblank counter reported to userspace will jump. But I guess that's fine > as long as userspace realizes that the counter is not at all reliable > across modesets. I think that's a fair assumption. Modeset is kind of a heavy operation and I wouldn't expect applications to perform one all that often. That should be even more true of applications that rely on the counters. At least that would be my expectation. Thierry
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