[PATCH] Allow exec on 32-bit from readable, non-exec pages, with a warning.
Linas Vepstas
linas at austin.ibm.com
Tue Jul 10 07:29:26 EST 2007
On Mon, Jul 09, 2007 at 04:16:40PM -0500, Scott Wood wrote:
> Arnd Bergmann wrote:
> > I may be missing the obvious, but doesn't that defeat the purpose of
> > non-executable mappings?
>
> The hardware in question doesn't support non-executable mappings;
> otherwise, it'd never have worked in the first place. Note that this is
> only allowed on 32-bit, non-book-E.
>
> There isn't much value in enforcing non-exec mappings only if it happens
> to be the first fault on a given page.
Thank you. I was reading this thread last week, and scratching my head,
thinking wtf ??
--linas
More information about the Linuxppc-dev
mailing list