linux-kernel - Re: [PATCH V6] x86: NX protection for kernel data

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Date:	Fri, 16 Oct 2009 15:27:30 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Siarhei Liakh <sliakh.lkml@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>,
	James Morris <jmorris@...ei.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@....de>, Rusty Russell <rusty@...tcorp.com.au>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	David Howells <dhowells@...hat.com>,
	Aristeu Rozanski <aris@...hat.com>
Subject: Re: [PATCH V6] x86: NX protection for kernel data


* Siarhei Liakh <sliakh.lkml@...il.com> wrote:

> > thanks - this one looks good now.
> >
> > Would be nice if you could send this with the patch that also deals 
> > with the first 1 MB.
> 
> I do plan to have that first megabyte fixed. But for now, let's keep 
> these patches separate, as there are many things that rely on that 1MB 
> area and I want to make sure they all still work properly with the 
> patch.

Well, if we are going to touch this area i'd like to see them addressed 
together.

The 1MB thing would obviously be a default-off Kconfig option so in that 
sense it should not break anything by default.

	Ingo
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