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<body><span class="vcard"><a class="email" href="mailto:mengmeng.meng@intel.com" title="meng <mengmeng.meng@intel.com>"> <span class="fn">meng</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL][v4.3 regression]SKL OpenCL performance reduced hugely"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92975">bug 92975</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>NEW
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL][v4.3 regression]SKL OpenCL performance reduced hugely"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92975#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL][v4.3 regression]SKL OpenCL performance reduced hugely"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92975">bug 92975</a>
from <span class="vcard"><a class="email" href="mailto:mengmeng.meng@intel.com" title="meng <mengmeng.meng@intel.com>"> <span class="fn">meng</span></a>
</span></b>
<pre>(In reply to Jani Nikula from <a href="show_bug.cgi?id=92975#c1">comment #1</a>)
<span class="quote">> (In reply to meng from <a href="show_bug.cgi?id=92975#c0">comment #0</a>)
> > 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.</span >
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 <<a href="mailto:peter.antoine@intel.com">peter.antoine@intel.com</a>>
Date: Fri Jul 10 20:13:11 2015 +0300
drm/i915: Added Programming of the MOCS</pre>
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