<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [HSW] gen7_queue_flip doesn't work on RCS" href="https://bugs.freedesktop.org/show_bug.cgi?id=67600#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [HSW] gen7_queue_flip doesn't work on RCS" href="https://bugs.freedesktop.org/show_bug.cgi?id=67600">bug 67600</a> from <a class="email" href="mailto:daniel@ffwll.ch" title="Daniel Vetter <daniel@ffwll.ch>"> Daniel Vetter</a> <pre>(In reply to <a href="show_bug.cgi?id=67600#c0">comment #0</a>) > Created <a href="attachment.cgi?id=83409" name="attach_83409" title="i915_error_state">attachment 83409</a> <a href="attachment.cgi?id=83409&action=edit" title="i915_error_state">[details]</a> > i915_error_state > > I noticed that on IVB, page flips ioctls end up blocking when the GPU is > busy. Specifically the RCS -> BCS ring switch seems to be what's taking time > (this time is spent in i915_gem_object_pin_to_display_plane). Ok, Ben is looking into why pageflipping on the RCS doesn't work, since he thinks it should. Orthogonal to that issue we shouldn't block in pin_to_display_plane, at least if semaphores are enabled (which they are by default). Stephane can you please dig into where exactly we blow through massive amounts of time in there?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>