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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [gm45] Invalid GTT entry during Command Fetch from CS prefetch crossing page boundary"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91133#c33">Comment # 33</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [gm45] Invalid GTT entry during Command Fetch from CS prefetch crossing page boundary"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91133">bug 91133</a>
from <span class="vcard"><a class="email" href="mailto:vincent.legoll@gmail.com" title="Vincent Legoll <vincent.legoll@gmail.com>"> <span class="fn">Vincent Legoll</span></a>
</span></b>
<pre>I have finally managed to bisect it properly to :
[75d04a3773ecee617847de963ae4195d6aa74c28] drm/i915/gtt: Allocate va range only
if vma is not bound
which is related to performance bug report
<a class="bz_bug_link
bz_status_VERIFIED bz_closed"
title="VERIFIED FIXED - [SKL/BSW/BDW Bisected]Synmark2_v6 OglBatch6/7 and OglDrvState performance reduced by 8%-24%"
href="show_bug.cgi?id=90224">https://bugs.freedesktop.org/show_bug.cgi?id=90224</a>
I tested a kernel just before that commit, no bug, and then that commit itself,
where I reproduced the crash in a few seconds with the "vlc video resize
wiggling" GPU-hanger
But unfortunately cannot test current git without that single patch, as it
won't revert properly...</pre>
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