[Xen-devel] Issues while using kdb to debug Xen

[Daniel J Mathew <danieljmathew@xxxxxxxxx>]

Hi,

I have been trying to debug Xen using kdb. However, I am unable to successfully boot dom0 after compiling and installing kdb. 

Software/hardware config: Base distribution - Debian Lenny (64-bit) on a Dell desktop (Optiplex 780) with a serial cable to another machine. Xen 4.0.1 (without kdb) works fine.

Here are the steps I followed to set up Xen-unstable with kdb. 

1. Cloned code from http://xenbits.xensource.com/ext/debuggers.hg and did a make world. dom0 kernel: 2.6.32.27.
2. make install-xen, make install-tools, make install-kernels, update-initramfs -c -v -k 2.6.32.27

3. Reboot
4. The machine starts and serial output comes fine on the 2nd machine. I have attached the serial log.
About 5 seconds after the last message is printed to console, the machine powers off. I did not try to break into kdb using Ctrl+\; just wanted to see if dom0 boots fine, first of all.

GRUB config:
root (hd0,0)
kernel /boot/xen.gz loglvl=all guest_loglvl=all com1=34800,8n1 console=com1
module /boot/vmlinuz-2.6.32.27 root=UUID=.... ro console=hvc0 earlyprintk=xen nomodeset
module /boot/initrd.img-2.6.32.27

Can you please let me know what could be causing this issue, and what I can do to get around it?

Thanks,
Daniel.
--
Daniel J Mathew | IIT Delhi

Attachment: xen-unstable4.cap
Description: application/cap

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