<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [iGVT-g][SKL] GPU Hang and iGVT-g guest crash under certain loads"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107475#c11">Comment # 11</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [iGVT-g][SKL] GPU Hang and iGVT-g guest crash under certain loads"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107475">bug 107475</a>
from <span class="vcard"><a class="email" href="mailto:leozinho29_eu@hotmail.com" title="leozinho29_eu@hotmail.com">leozinho29_eu@hotmail.com</a>
</span></b>
<pre>Using gvt-stable-4.17 kernel it's noticeable it is more stable when compared to
other kernel versions, as 4.18.0-12 (Ubuntu Bionic Beaver HWE Edge) or drm-tip.
The Intel Windows driver version 25.20.100.6326 seems to be more unstable than
24.20.100.6136 even when using gvt-stable-4.17.
The most stable Intel Windows driver version to me is 24.20.100.6136 and the
most stable Linux kernel version is gvt-stable-4.17.
I noticed that other, more unstable kernel version print the following message
when booting the Windows 10 guest with 25.20.100.6326:
[2612.248481] gvt: vgpu(1) Invalid FORCE_NONPRIV write 83a8 at offset 24ec
It can't be guaranteed the system is stable when the above message appears.
Under heavy load, mainly heavy memory usage, hundreds messages like:
[3803.580306] gvt: guest page write error, gpa 690814b0
Can appear on dmesg. And, with drm-tip, a kernel panic is likely to happen,
while with 4.18.0-12 and gvt-stable-4.17 it may continue working normally or
blue screen the guest, more likely to continue working when using
24.20.100.6136.
>From my experiences I would say 25.20.100.6326 is worse than 24.20.100.6136
stability-wise. The gvt-stable-4.17 kernel is better than others
stability-wise.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>