KGDB 2..26 fails to wait while booting

From: amruth
Date: Mon Aug 18 2008 - 11:36:44 EST


Thanks Jason. I got it working, but is it possible to enable kdb with kgdb.
How can I debug the kernel early. In kdb we have option called as kdb=early, can we do the same in kgdb. I tried to set breakpoint in kgdb at start_kernel, it looks like kgdb executed past the start_kernel code.Hence break point does not work.
Please let me know how to enable debug early kernel option in KGDB.

Thanks
Amruth p.v


--- On Mon, 8/18/08, Jason Wessel <jason.wessel@xxxxxxxxxxxxx> wrote:

> From: Jason Wessel <jason.wessel@xxxxxxxxxxxxx>
> Subject: Re: KGDB 2..26 fails to wait while booting
> To: amruth_pv@xxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Date: Monday, August 18, 2008, 9:05 AM
> amruth wrote:
> > Hi
> > I have created 2.6.26 kernel with KGDB enabled but the
> system fails to
> wait. Can anybody provide me detailed info on how to setup
> the grub
> configuration to wait until gdb connects from development
> machine.
> > Thanks
> > Amruth p.v
> >
> >
> >
> >
> > --
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>
> What parameters did you use in grub?
>
> Generally speaking you have to setup the boot parameters to
> be something
> like:
>
> kgdboc=ttyS0,115200 kgdbwait
>
> Jason.
>
> --
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