Re: Need help with windows debug tools - HPET problems on win2k864

["Sebastian Herbszt" <herbszt@gmx.de>]

Beth Kon wrote:

>I ran into trouble trying to get the hpet working with win2k864. It
> hangs very early on (black screen with "Windows is loading Files" at the
> bottom). My guess is there are problems with our acpi/bios changes,
> since they introduce some ACPI 2.0 structures and QEMU/KVM supports ACPI
> 1.0. We may not have enough 2.0 infrastructure to get it working right
> for 64 bit. Win2k832 does work with the hpet, but 64 doesn't.

Does win2k864 without hpet work?
 
> So! I need to figure out how to debug Windows and Anthony suggested that
> there may be some people with experience here. 
> 
> I have set up a host and a target guest on kvm, one started with -serial
> pty and the other with -serial /dev/pts/0 (which was the value spit out
> by the first guest). I'm trying to test the serial connection by
> following instructions at:
> 
> http://msdn.microsoft.com/en-us/library/cc266323.aspx
> 
> which just sends a message over the serial connection from one guest to
> the other. I specify the baud rate as shown , assuming it shouldn't
> matter in this emulated environment, but I can't get the message to show
> up. Does anyone have any suggestions? Is this the proper way to set up a
> "null modem cable" between 2 guests?
> 
> Also, reading the windows docs, I see that there are several debuggers,
> like kd, cdb, ntsd, and windbg (gui wrapper). I downloaded the debugging
> package from:
> 
> http://www.microsoft.com/whdc/devtools/debugging/installx86.mspx#a
> 
> which claims to download all tools, but I can't figure out how to invoke
> kd directly. It appears not to be there. I can invoke WinDbg from the
> Start menu, however, and I assume that will be sufficient for my needs.
> 
> Lastly, I still haven't figured out if these debuggers require setup on
> both host and target. If so, they will be useless for my needs since I
> get a hang before the OS boots. But there must be some way to debug boot
> issues. 
> 
> If anyone has any comments/suggestions on any of the above, I'd be very
> appreciative!

Maybe the article "Using the windows debugger under Xen" at
http://wiki.xensource.com/xenwiki/XenWindowsGplPv can help.

- Sebastian