[Bug 98104] [!semaphore] Gpu hang recovery fails, causing reset loop

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98104

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 8687b3ec852e89630bac650f15136811c7b4c1dc
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Oct 7 07:53:24 2016 +0100

    drm/i915: Distinguish last emitted request from last submitted request

    In order not to trigger hangcheck on a idle-but-waiting engine, we need
    to distinguish between the pending request queue and the actual
    execution queue. This is done later in "drm/i915: Enable multiple
    timelines" but for now we need a temporary fix to prevent blaming the
    wrong engine for a GPU hang.

    (Note that this causes a temporary subtle change in how we decide when
    to allow a waitboost to be re-awarded back to the waiter, the temporary
    effect is that if the wait is upon the most current execution the wait
    is given for free, instead of checking to see if the client stalled
    itself. This will be repaired in "drm/i915: Enable multiple timelines".)

    Fixes: 0a046a0e93d2 ("drm/i915: Nonblocking request submission")

And now back to the full series...

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20161007/e6c51af4/attachment.html>