Re: Booting/installing WindowsNT

[Andre Przywara <andre.przywara@amd.com>]

Avi Kivity wrote:
> On 05/03/2010 08:03 PM, Michael Tokarev wrote:
>>> Michael, can you try to use -cpu host,-vme and see if that makes a
>>> difference?
>>
>>
>> With -cpu host,-vme winNT boots just fine as with just -cpu host.
>>
>> I also tried with -cpu qemu64 and kvm64, with +vme and -vme (4
>> combinations in total) - in all cases winNT crashes with the
>> same 0x0000003E error.  So it appears that vme makes no
>> difference.
> 
> Please try again the model/vendor/family.  I suggest using x86info on 
> both to see what the differences are, using -cpu host with overrides to 
> make it equivalent to qemu64 (and verifying it fails), then removing the 
> overrides one by one until it works.
I managed to get a NT4 CD and can acknowledge the issues you see. I am 
about to debug this now.
With -cpu host (on a AMD K8, similar to Michael's) I get to the point 
Michael mentioned:
  Microsoft (R) Windows NT (TM) Version 4.0 (Build 1381).
  1 System Processor [512 MB Memory]  Multiprocessor Kernel
Then it _seems_ to hang, checking for getting beyond a certain TSC value 
in a tight loop.
(rdtsc; cmp %edx, %edi; ja @rdtsc; jb bailout; cmp %eax, %ebx; ja 
@rdtsdc; bailout:)
But after some time (when I got back from the monitor, but also without 
going into) I could proceed with the installation.
Michael, can you confirm this?
I will now try to get behind the STOP 3E error.

Regards,
Andre.

-- 
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 448-3567-12