Jason,
Thanks for the information. It is of real use.
I patched 2.6.24 kernel with a patch from "kgdb_2.6.24" branch, but
when remote gdb tries to attach to kernel, it causes crash. (As per your
reply now I get the reason why it is so..)
I am looking forward to back port kgdb specific 2.6.26 changes to
2.6.24 kernel. Can you point me to any documentation from where I can
start to understand kgdb architecture?
Regards,
Rupesh
Jason Wessel wrote:
> Perhaps you can describe what you are doing that does not work? I have
> a working ARM target with the 2.6.26 and could try a specific case.
>
> The existing 2.6.24 (not the old branch) patches may or may not work on
> the ARM architecture as only some initial boot testing was conducted.
> The new code base contains tests to validate that the different parts of
> the kgdb core and architecture specific portions work correctly.
>
> You could consider back porting some of the work from the 2.6.26 kernel
> into the 2.6.24 kernel, but it might be a little more tricky now that
> the kgdb core is part of the mainline kernel, and is evolving with the
> core kernel API.
>
> Jason.
>
> Rupesh Gujare wrote:
>
>> Jason,
>> I am using 2.6.24 kernel and patching it with kgdb_old_2.6.24
>> patch. This patch(kgdb_old_2.6.24) works without kgdbwait.
>> But if I patch 2.6.24 kernel with "kgdb_2.6.24" branch patch, it
>> doesn't work and causes crash.(I am using ARM board).
>>
>> Can you suggest why so? Is kgdb_2.6.24 branch don't have all updates
>> of 2.6.26 branch?
>> I have ben restricted to 2.6.24 kernel as if now and can't use the
>> next versions.
>>
>> Also can I back port kgdb specific 2.6.26 changes to 2.6.24?
>>
>> Regards,
>> Rupesh
>>
>> Jason Wessel wrote:
>>
>>> As far as I know kgdbwait still works fine with the 2.6.26 kernel. I
>>> am reasonably certain that at certain points in the kgdb history it has
>>> not worked for kgdboe. kgdbwait is definitely not deprecated, and is
>>> fully supported with kgdboc, kgdboe and the kgdb8250 driver in the
>>> kgdb-dev branch.
>>>
>>> As a side point... Some time in the next month or the kgdb Source Forge
>>> web site will get updated to reflect the current state of kgdb and the
>>> ongoing maintenance and design efforts. A how to contribute FAQ will
>>> live there as well.
>>>
>>> With respect to new development on kgdb, it occurs at:
>>>
>>> http://git.kernel.org/?p=linux/kernel/git/jwessel/linux-2.6-kgdb.git;a=heads
>>>
>>> The kgdb-dev branch has all the arch, and all the drivers.
>>>
>>> The kgdb-next branch represents what will be merged in the next kernel
>>> merge window (or at least attempted to be merged). The other branches
>>> labeled kgdb_x.x.x are a version of kgdb which was appropriate at the
>>> time and development moved on with no further changes to these branch
>>> points.
>>>
>>> There are quite a few lines of code in the kgdb-dev branch which either
>>> need refactoring, review or design changes to gain mainline kernel
>>> acceptance, but of course that is why we have a -dev branch. :-)
>>>
>>> Jason.
>>>
>>>
>>> Milind Dumbare wrote:
>>>
>>>
>>>> You might want to try serial line over USB. Regarding why kgdbwait is
>>>> deprecated in kgdboe, I am not sure. You will have to wait till someone
>>>> replies with some answer on kgdbwait on kgdboe.
>>>>
>>>> On Tue, Jun 10, 2008 at 10:51 AM, Rupesh Gujare <[EMAIL PROTECTED]>
>>>> wrote:
>>>>
>>>>
>>>>
>>>>
>>>>> Milind,
>>>>> Thanks for the information. Can you just give more information
>>>>> regarding why kgdbwait is deprecated? and are there any patches which can
>>>>> enable it? How much effort will it require to enable it?
>>>>> As currently I can not use KGDB over serial line, I am trying to extract
>>>>> maximum out of kgdboe.
>>>>>
>>>>> Your suggestions will be valuable.
>>>>>
>>>>> Thanks and regards,
>>>>> Rupesh.
>>>>>
>>>>> Milind Dumbare wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>
>>>
>
>
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