<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Delay in skl_disable_plane() causes a system freeze"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104975#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Delay in skl_disable_plane() causes a system freeze"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104975">bug 104975</a>
from <span class="vcard"><a class="email" href="mailto:bugs@mblankhorst.nl" title="Maarten Lankhorst <bugs@mblankhorst.nl>"> <span class="fn">Maarten Lankhorst</span></a>
</span></b>
<pre>CONFIG_DRM_I915_DEBUG_VBLANK_EVADE is meant for this. It complains if we ever
take longer than 100 us in vblank evasion, and how long this is. If it takes
longer than 100 us we possibly hit the underrun, which possibly could result in
a crash..
The sleep hack is only useful to check whether the DOUBLE_BUFFER_CTL patch
works as intended.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>