Subject: Re: [PATCH] Allow exec on 32-bit from readable, non-exec pages, with a warning.

From: David Gibson <[email-masked]>
Date: Tue, 17 Jul 2007 12:42:46 +1000

On Wed, Jul 11, 2007 at 02:03:24AM +0200, Segher Boessenkool wrote:
> >> Yeah.  Giving the warning is a good thing though.
> >
> > No, it isn't; it's just noise, if we're not ever going to do anything
> > to prevent the behaviour - and we can't.
> 
> The same userland code will not run correctly on PPC64 or BookE
> systems.  Is that not a reason to warn?

Way back when, I distinctly recall aborting my plans to implement
per-page exec on 40x, precisely because of executables like this.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson