Re: kgdb test suite failure

[Jason Wessel]

David Miller wrote:
> From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Date: Thu, 22 May 2008 23:14:23 +0200 (CEST)
>
>> Please use HW breakpoints in the test suite. The RFC patch looks
>> horrible :)
>
> ftrace needs basically the same kind of facility as kgdb
> needs here. So bypassing the need for kgdb won't get around
> the problem in general.

It does seem like there should be a general way to force a controlled
write to a read-only page. That would certainly allow for the use of
software breakpoints with KGDB. At the point in time that such calls
come into existence I would certainly consider adding a toggle which
you can use from the debugger to provide such access.

At least for the current time for kgdb, we will use hardware
breakpoints.

Jason.

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