[Bug 94934] [bdw] kernel crashes randomly

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94934

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|i915: kernel crashes        |[bdw] kernel crashes
                   |randomly                    |randomly

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
Looking at the error state for the i915.semaphore=1 i915.enable_ppgtt=0 case,
the hang there is is the MI_SEMAPHORE_SIGNAL code. I've put some fixes for gen8
semaphores at https://cgit.freedesktop.org/~ickle/linux-2.6/log/?h=semaphores

Could you please see if they make the w/a i915.semaphore=1 i915.enable_ppgtt=0
case more stable?

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