[Bug 92975] [SKL][v4.3 regression]SKL OpenCL performance reduced hugely

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92975

meng <mengmeng.meng at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #2 from meng <mengmeng.meng at intel.com> ---
(In reply to Jani Nikula from comment #1)
> (In reply to meng from comment #0)
> > I can't find out the first bad commit because SKL can't boot with some
> > bisected kernels.
> 
> Please try 'git bisect skip' or choose commits yourself to try to proceed
> with the bisect.
> 
> I presume you have i915.preliminary_hw_support=1 param set for pre-v4.3
> kernels.

No "i915.preliminary_hw_support=1" set in grub.
All our tests are in the same environment e.g. the same kernel parameter.


By skipping many commits, found out the first bad commit:
commit 3bbaba0ceaa254c9ee261e329bfd92e4ba4fe32a
Author: Peter Antoine <peter.antoine at intel.com>
Date:   Fri Jul 10 20:13:11 2015 +0300

    drm/i915: Added Programming of the MOCS

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