[Mesa-dev] [Bug 86690] glmark2-es2-wayland shortly freezes on some frames with egl_dri2 backend (Nouveau/GK20A)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86690

Alexandre Courbot <gnurou at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
          Component|EGL/Wayland                 |Driver/nVidia (open)
           Assignee|wayland-bugs at lists.freedesk |aplattner at nvidia.com
                   |top.org                     |
            Product|Mesa                        |xorg
         QA Contact|mesa-dev at lists.freedesktop. |xorg-team at lists.x.org
                   |org                         |

--- Comment #10 from Alexandre Courbot <gnurou at gmail.com> ---
After further confirmation (checking the GET/PUT pointers to make sure
pushbuffers are executed, and directly peeking the value of the screen fence
counter using PRAMIN), it appears that the fence value is indeed updated by the
GPU as expected, but user-space is reading an old value. Seems like our old
friend ARM memory coherency issue is back. :(

Moving this issue to Nouveau, since this is clearly a driver problem, and
taking ownership of it.

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