From: Pavel Machek <pavel@ucw.cz>
To: David Howells <dhowells@redhat.com>
Cc: vapier.adi@gmail.com, rgetz@blackfin.uclinux.org,
lethal@linux-sh.org, gerg@uclinux.org,
uclinux-dist-devel@blackfin.uclinux.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size
Date: Sat, 4 Jul 2009 05:34:29 +0200 [thread overview]
Message-ID: <20090704033429.GA1799@ucw.cz> (raw)
In-Reply-To: <24530.1247050900@redhat.com>
On Wed 2009-07-08 12:01:40, David Howells wrote:
> Pavel Machek <pavel@ucw.cz> wrote:
>
> > The patch seems wrong to me; loader needs the stack, too, right?
> >
> > What about making sure that the loader specifies reasonable stack
> > size, instead?
>
> The loader doesn't need its own stack, unless it _is_ the executable. It uses
> the executable's stack. The problem is that the executable and the loader can
> both specify the stack size for NOMMU, but which one do we pick, or do we
> consider both.
Imageine loader needs 64K, while executable only needs 4K. You surely
want to execute it with 64K stack, because it will not fit into 4K?
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2009-07-08 11:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-01 12:08 [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size David Howells
2009-07-01 16:02 ` Mike Frysinger
2009-07-01 16:49 ` David Howells
2009-07-01 16:48 ` [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size [ver #2] David Howells
2009-07-01 16:49 ` David Howells
2009-07-02 17:21 ` [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size Paul Mundt
2009-07-04 2:46 ` Pavel Machek
2009-07-08 11:01 ` David Howells
2009-07-04 3:34 ` Pavel Machek [this message]
2009-07-08 18:48 ` Mike Frysinger
2009-07-09 10:19 ` Pavel Machek
2009-07-09 10:59 ` David Howells
2009-07-11 21:30 ` Pavel Machek
2009-07-14 12:15 ` Mike Frysinger
2009-07-18 10:39 ` Pavel Machek
2009-07-18 19:11 ` Mike Frysinger
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