[Bug 88987] [BSW PPGTT Bisected]igt/gem_ring_sync_loop causes system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88987

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE
            Summary|[BSW                        |[BSW PPGTT
                   |PPGTT]igt/gem_ring_sync_loo |Bisected]igt/gem_ring_sync_
                   |p causes system hang        |loop causes system hang

--- Comment #2 from lu hua <huax.lu at intel.com> ---
(In reply to Jani Nikula from comment #1)
> Probably dupe of bug 88652.

Yes. I tested on commit 21076372afe711072b9a447f22a098691dd0b2cb, it doesn't
exit testing and GPU hang, but not system hang, so report bug 89060 to track
the gpu hang.
Bisect shows: 6d3d8274bc45de4babb62d64562d92af984dd238 is the first bad commit.
commit 6d3d8274bc45de4babb62d64562d92af984dd238
Author:     Nick Hoath <nicholas.hoath at intel.com>
AuthorDate: Thu Jan 15 13:10:39 2015 +0000
Commit:     Daniel Vetter <daniel.vetter at ffwll.ch>
CommitDate: Tue Jan 27 09:50:53 2015 +0100

    drm/i915: Subsume intel_ctx_submit_request in to drm_i915_gem_request

    Move all remaining elements that were unique to execlists queue items
    in to the associated request.

    Issue: VIZ-4274

    v2: Rebase. Fixed issue of overzealous freeing of request.
    v3: Removed re-addition of cleanup work queue (found by Daniel Vetter)
    v4: Rebase.
    v5: Actual removal of intel_ctx_submit_request. Update both tail and
postfix
    pointer in __i915_add_request (found by Thomas Daniel)
    v6: Removed unrelated changes

    Signed-off-by: Nick Hoath <nicholas.hoath at intel.com>
    Reviewed-by: Thomas Daniel <thomas.daniel at intel.com>
    [danvet: Reformat comment with strange linebreaks.]
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

*** This bug has been marked as a duplicate of bug 88652 ***

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