kgdb over ethernet support for 3.x kernel

[Sannu K]

On Tue, Jul 3, 2012 at 11:09 AM, Peter Teoh <htmldeveloper at gmail.com> wrote:

> have not heard of such feature available, but technically, the reason why
> serial port is important is because it is initialized at a very early stage
> in linux kernel bootup, and anything that happened before that cannot be
> analyzed via kgdb as well.   i am not sure why u need ethernet.   normally
> my approach is to use VirtualBox running a kernel with kgdb parameters all
> setup, and then define a virtual serial port in VirtualBox, to connect to a
> pipe, and then from host OS, use gdb to attach via "target remote" to the
> virtual terminal, which is created via the "socat" command.
>
> Search the web for details.
>
> http://www.google.com.sg/search?q=socat+virtualbox+serial+kgdb<http://www.google.com.sg/search?sourceid=chrome&ie=UTF-8&q=socat+virtualbox+serial+kgdb>
>
>
> On Tue, Jul 3, 2012 at 12:00 PM, Amit Nagal <helloin.amit at gmail.com>wrote:
>
>> On Mon, Jul 2, 2012 at 10:35 PM,  <Ashish_Bunkar at dell.com> wrote:
>> > what i know is gdb over ethernet is removed from newer kernels.
>> > Please let me know if you have some other information.
>> >
>> > Thanks
>> > Ashish Bunkar
>> > ________________________________________
>> > From: kernelnewbies-bounces at kernelnewbies.org [
>> kernelnewbies-bounces at kernelnewbies.org] On Behalf Of Amit Nagal [
>> helloin.amit at gmail.com]
>> > Subject: kgdb over ethernet support for 3.x kernel
>> >
>> > Hi ,
>> >
>> > 3.x kernel does not seem to have built in support to use kgdb over
>> > ethernet functionality .
>> > To use this , can i be guided from where i can download patch for the
>> > same and apply to 3.x series kernel ?
>> >
>> > thanx & regards
>> > Amit Nagal
>> >
>>
>> Actually i want to to debug kernel modules with kgdb - gdb connected
>> over tcp / udp port
>> as depicted in
>> http://kernel.org/pub/linux/kernel/people/jwessel/kdb/EnableKGDB.html
>> section 3 .
>> but in kernel , there seems to no built in support for that .
>>
>> Thanx & Regards
>> Amit Nagal
>>
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>
>
>
> --
> Regards,
> Peter Teoh
>
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>
>
Hi Amit,

KGDB over ethernet is not merged to linux kernel. It is available as a
separate patch. Ethernet is very fast compared to serial communication.
While trying to debug a driver it may not be possible to use virtualbox.

Thanks,
Sannu
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