<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [SNB, IVB] Page flips hang indefinitely, apparently waiting for mmio writes that never happen" href="https://bugs.freedesktop.org/show_bug.cgi?id=75502#c15">Comment # 15</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [SNB, IVB] Page flips hang indefinitely, apparently waiting for mmio writes that never happen" href="https://bugs.freedesktop.org/show_bug.cgi?id=75502">bug 75502</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>Indeed that hang is a separate issue, the infamous <a class="bz_bug_link bz_status_NEW " title="NEW --- - [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)" href="show_bug.cgi?id=54226">bug 54226</a>. For the flip stall detection, I think I basically need a full request with tracking seqno so that we can check after a vblank for the completed flip command but pending mmio.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>