Re: [Xen-devel] How to debug Xen and Dom0 driver?

[Tej <bewith.tej@xxxxxxxxx>]

On Wed, Oct 8, 2008 at 10:19 PM, Neo Jia <neojia@xxxxxxxxx> wrote:
> On Wed, Oct 8, 2008 at 9:46 AM, Sandesh <sandesh.ahiremath@xxxxxxxxx> wrote:
>> If you want to debug dom0, use kdb instead of gdb. Apply the kdb patch
>> suitable to you kernel version, build it and run.
>
> Do you have a kdb patch for 2.6.18 available? If yes, could you share with me?

ftp://oss.sgi.com/www/projects/kdb/download/v4.4/
refer readme, then apply patches

thanks
-tej


>
> Thanks,
> Neo
>
>
>>
>> On Wed, 2008-10-08 at 09:38 -0700, Neo Jia wrote:
>>> On Wed, Oct 8, 2008 at 7:34 AM, Tej <bewith.tej@xxxxxxxxx> wrote:
>>> > On Wed, Oct 8, 2008 at 1:16 PM, Neo Jia <neojia@xxxxxxxxx> wrote:
>>> >> hi,
>>> >>
>>> >> I am wondering if anybody is doing Xen or Dom0 debugging with gdb
>>> >> here. If yes, could you show me the procedure of doing that?
>>> >
>>> > For dom0, it will be similar to debugging in Linux e.g Use kgdb,
>>> > netdump, kdump etc.  and analyse those dump using crash tools.
>>>
>>> This is what I want to know more. How to use kgdb with dom0? I assume
>>> you can't as the TSS is in Xen not dom0, right?
>>>
>>> Thanks,
>>> Neo
>>>
>>> >
>>> > For domU use gdb built in debugger with xen.
>>> > 1. cd xen-3.3.0/tool/debugger/gdb/README
>>> >   This explains everything from setting gdbserver-xen to debugging with 
>>> > gdb.
>>> > 2. enable xendump by configuring xend-config.sxp file
>>> >    It is helpful for capturing vmcore dumps  from xen guest.
>>> >   #(enable-dump no) change to (enable-dump yes)
>>> >   Restart xend
>>> >   start domU's and capture the vmcore @ /var/crash/*
>>> >   analyse the dump with crash
>>> >
>>> > HTH
>>> > -tej
>>> >
>>> >
>>> >
>>> >
>>> >>
>>> >> Thanks,
>>> >> Neo
>>> >>
>>> >> --
>>> >> I would remember that if researchers were not ambitious
>>> >> probably today we haven't the technology we are using!
>>> >>
>>> >> _______________________________________________
>>> >> Xen-devel mailing list
>>> >> Xen-devel@xxxxxxxxxxxxxxxxxxx
>>> >> http://lists.xensource.com/xen-devel
>>> >>
>>> >
>>>
>>>
>>>
>>
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>
>
>
> --
> I would remember that if researchers were not ambitious
> probably today we haven't the technology we are using!
>

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