Re: [patch 2/2] kprobes x86_64 quick fix mark-ro-data

Arjan van de Ven
2007-06-19T13:47:57Z

On Tue, 2007-06-19 at 09:30 -0400, Mathieu Desnoyers wrote:
> * Arjan van de Ven (arjan@infradead.org) wrote:
> > On Tue, 2007-06-19 at 15:38 +0530, S. P. Prasanna wrote:
> > > This patch is a quick fix for x86_64 to enable kprobes only if DEBUG_RODATA is
> > > not configured. Since DEBUG_RODATA markes the kernel text pages as read-only.
> >
> >
> > it does??
> >
> > I don't seem to be able to find this in the source code.....
> >

> See arch/x86_64/mm/init.c:mark_rodata_ro().

eh woops

PATCH] x86: tighten kernel image page access rights
author
Jan Beulich <jbeulich@novell.com>

Wed, 2 May 2007 17:27:10 +0000
(19:27 +0200)
committer
Andi Kleen <andi@basil.nowhere.org>

Wed, 2 May 2007 17:27:10 +0000
(19:27 +0200)
commit
6fb14755a676282a4e6caa05a08c92db8e45cfff

changed it to include text (even though Andi vetoed that before when I
asked for it on grounds of breaking kprobes)... sounds this really wants
to be a 2nd config option to seperatedly do code and data.

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