Re: Booting/installing WindowsNT

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

Michael Tokarev wrote:
  > I've seen 3 variants here so far:
> 
> 1.  normal installation.  It stops for a while after that kernel
>   message you mentioned.  For several secodns, mabye even 20
>   seconds.  And after a while it continues.  During all this
>   time the guest cpu usage is 100% like you describe (a tight
>   loop).  This is what I call "working" - I never bothered to
>   think if that tight loop/pause is normal or not.  This is
>   what happens for me with -cpu host.
OK, I see that, too.

> 2. with -cpu pentium it also displays that kernel message but
>   stops here without any cpu usage whatsoever.  I waited for
>   some 40 minutes at one point (I just forgot I started it but
>   later on noticed there's a QEMU window floating around with
>   that NT kernel message on it and nothing happening).
Agreed. It stucks in a sti;hlt;ret, obviously waiting in vain for an 
interrupt. Interestingly it works with -smp 2. Will further investigate.

> 3.  In all other cases so far it BSoDs with STOP 0x3E error
>   right before displaying that kernel message.
MSDN talks about a mulitprocessor configuration error:
http://msdn.microsoft.com/en-us/library/ms819006.aspx
I suspected the offline CPUs in the mptable that confuse NT. But -smp 
1,maxcpus=1 does not make a difference. I will try to dig deeper in this 
area.

> So.. I'm not sure if it's confirmation or not :)
I take this as one. Thanks for the clarification.

Regards,
Andre.

-- 
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 488-3567-12