Re: [PATCH] Kwatch: kernel watchpoints using CPU debug registers

From: Alan Stern
Date: Wed Jan 17 2007 - 11:17:59 EST


On Wed, 17 Jan 2007, Ingo Molnar wrote:

> * Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
>
> > From: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> >
> > This patch (as839) implements the Kwatch (kernel-space hardware-based
> > watchpoints) API for the i386 architecture. The API is explained in
> > the kerneldoc for register_kwatch() in arch/i386/kernel/kwatch.c.
>
> i think it would be nice to have this ontop of Roland's utrace
> infrastructure, which nicely modularizes all hardware debugging
> capabilities and detaches it from ptrace.

I'll be happy to move this over to the utrace setting, once it is merged.
Do you think it would be better to include the current version of kwatch
now or to wait for utrace?

Roland, is there a schedule for when you plan to get utrace into -mm?

Alan Stern

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