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RE: [Xen-users] Windows NT HVM fail to install

To: "Claudemir Todo Bom" <devel@xxxxxxxxx>
Subject: RE: [Xen-users] Windows NT HVM fail to install
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Sat, 22 Nov 2008 09:15:47 +1100
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Thread-topic: [Xen-users] Windows NT HVM fail to install
> upgraded to 3.3.0 and tweaked a little with cpuid... i noticed that HT
> is the fourth bit of edx, noted also that it was not enabled before!
> Unfortunately I had no success on running Windows NT 4.0 as an HVM
> guest, i hope that the "cpuid" thing is the right way to follow, but I
> was unable to find any report of people running this system with Xen
> trying to do it!

Pity. That would have been a nice easy fix...

> I do not know the details about the bits of cpuid, i didn't understood
> how it works too, it would be helpful if somebody make a list of the
> setting to "emulate" many other processors, so I can try others.
> If anybody on the list knows more about the "STOP: 0x0000003e" error,
> help would be great!
> Thank you James for your support, hope you can help me a little more
> this.

All I can really suggest now is to try some different CPUID values - if
you can find some old hardware that NT4 runs on there should be a tool
you can run to get the CPUID from that, and then make the Xen emulated
one the same.

Failing that, it's probably time to get the Windows debugger working and
step through the code to find out where it's crashing - if you're lucky
you'll see the assembly language equivalent of:

Compare to xxx, and crash if not valid

Good luck! It would be nice for Xen to be able to run NT4 domains to be
able to get them off old hardware...


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