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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>As far as I can tell, Windows Update
should offer mthca and probably the IB bus driver (although at the moment they
don’t seem to show up). It basically matches on PnP id and driver date.
The if PnP is the same as what’s installed, and the WU driver date is
newer, WU offers it as an update. The paper at </span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><a
href="http://www.microsoft.com/whdc/maintain/WU_logic.mspx">http://www.microsoft.com/whdc/maintain/WU_logic.mspx</a>
explains the logic.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Windows Update I don’t believe will force a driver update
on you, but it does offer it if you select custom (which I always do just see
what MSFT thinks they should do to my system before they do it). Some users
will just periodically install whatever has been updated (good for security
patches, bad in this driver case).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Jan<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Tzachi Dar
[mailto:tzachid@mellanox.co.il] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, August 24, 2007
12:27 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Jan Bottorff;
ofw@lists.openfabrics.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [ofw] Windows Update
and IB stack versions</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Is the problem you are seeing specific to
IPOIB or does it happen also for other drivers?</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>What I mean is this: It seems that one can
easily solve the problem for ipoib but what happens for the bus driver and the
low level driver (mthca.sys). Are they also replaced by windows update?</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>It seems that solving the problem for
IPOIB can be done, but what about other components?</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Thanks</span></font><o:p></o:p></p>
</div>
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<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Tzachi</span></font><o:p></o:p></p>
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<blockquote style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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face="Times New Roman"><span style='font-size:12.0pt'>
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<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
ofw-bounces@lists.openfabrics.org [mailto:ofw-bounces@lists.openfabrics.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Jan Bottorff<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, August 22, 2007
5:30 AM<br>
<b><span style='font-weight:bold'>To:</span></b> ofw@lists.openfabrics.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [ofw] Windows Update and
IB stack versions</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I see the WHQL signed IPoIB drivers are on Windows Update
now. This brings to light a problem in the IB stack.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The issue is the PnP hardware id’s generated by the IB
bus for virtual devices are not version specific. This means if I install the
latest IB stack build, Windows Update will still offer to update my IPoIB
drivers, even though they probably would be incompatible with the other IB
stack components. The WHQL drivers are approximately build 614, and I know the
IBAL interface has new functions and a new version number in the current build.
There is absolutely nothing to tell Windows Update that drivers for PnP
hardware id “IBA\IPoIB” in version 614 of the IB stack will not
work on a stack looking for say the 758 build of the PnP hardware id
“IBA\IPoIB”.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>It seems like some version number and optionally a vendor
unique id needs to be part of all the PnP id’s generated, to assure
updates only happen between compatible components. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Jan<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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