Re: 32 bit Kvm running 32 bit WindowsXp hangs on reboot

[Philipp Hahn <hahn@univention.de>]

[-- Attachment #1: Type: text/plain, Size: 1538 bytes --]

Hello again,

I did some more debugging myself:

Am Freitag 06 August 2010 13:49:36 schrieb Philipp Hahn:
> [... Windows XP hangs on reboot...]
...
> If I do a "cont", kvm prints the following error message:
> (qemu) cont
> kvm: unhandled exit ffffffff
> kvm_run returned -22

These two lines are caused by kvm because these functions are called  in this 
order:
  qemu-kvm-0.12.4/qemu-kvm.c#kvm_cpu_exec()
  qemu-kvm-0.12.4/qemu-kvm.c#kvm_run()
  qemu-kvm-0.12.4/qemu-kvm.c#handle_unhandled()
-22 = -EINVAL == Invalid Argument

The ffffffff is from the Kernel:
  linux-2.6.32.17/arch/x86/kvm/svm.c#vmrun_interception()
    run->hw.hardware_exit_reason = SVM_EXIT_ERR
That line is executed because the folloing error occured previous to the line:
  linux-2.6.32.17/arch/x86/kvm/svm.c#nested_svm_vmrun_msrpm() <- false
  linux-2.6.32.17/arch/x86/kvm/svm.c#nested_svm_map() <- NULL

To me this looks like there's a problem with the virtual memory mapping, but 
since I know very little about KVMs internal working, I have no idea on how 
to proceed. Anybody any idea?

Sincerely
Philipp

PS: As you can see from the 'svm.c', it's on an AMD Athlon(tm) II X2 250 
Processor stepping 02.
-- 
Philipp Hahn           Open Source Software Engineer      hahn@univention.de   
Univention GmbH        Linux for Your Business        fon: +49 421 22 232- 0
Mary-Somerville-Str.1  28359 Bremen                   fax: +49 421 22 232-99
                                                    http://www.univention.de

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 197 bytes --]