Re: [Xen-devel] Debugging Xen via serial console

[Dan Doucette <doucette.daniel@xxxxxxxxx>]

Hi John,

 

The patches I submitted quickly fell out of sync with the 3.2 unstable branch at the time.  I found a month or so later they stopped working, and I didnt have the time to keep them up to date.

For Xen debugging, have you tried the kdb branch maintained my Mukesh Rathor (Oracle)?  I used this a few months ago and it seemed to work.  The branch is off the mainline, however.  Its usage is documented in the xen wiki pages, I believe.

 

If you would prefer to use gdb, the functionality should be easy to resurrect.  There really wasnt much to it.

I would recommend using my serial port splitter (ssplitd.c), which I found easier to use and was complete in its implementation.  I submitted all the changes in proper patch form after the posting you referenced above, if you are interested.

 

Dan.

 

 

On Wed, Jan 28, 2009 at 10:53 AM, Emre Can Sezer <ecsezer@xxxxxxxx> wrote:

I'm trying to debug Xen remotely using serial port.  I followed the instructions on the following post made in this xen-devel list:
http://lists.xensource.com/archives/html/xen-devel/2007-12/msg00678.html

I was able to connect gdb but I ran into a problem where even after I clear all the breakpoints, execution traps into gdb with SIGTRAP at restore_all_xen().  This only happens if I set a breakpoint and then try to continue after hitting the break point.  If I simply connect gdb but continue without setting any breakpoints, everything is OK.

The post mentions some stability issues and I haven't seen any follow ups.  Is this still a viable debugging method?  Or is there some other method I should try?

Thanks in advance,

John




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