[Bug 58762] [sna] *ERROR* Hangcheck timer elapsed... GPU hung

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58762

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

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

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
Note the BLT ring is executing stale data, so presumably:

commit 9a28977181724ebbd9bdc45291cf29da55a729ee
Author: Jesse Barnes <jbarnes at virtuousgeek.org>
Date:   Fri Oct 26 09:42:42 2012 -0700

    drm/i915: TLB invalidation with MI_FLUSH_DW requires a post-sync op v3

    So store into the scratch space of the HWS to make sure the invalidate
    occurs.

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