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Date: Wed, 27 May 2009 13:49:56 +0200
From: Johannes Weiner <jw@emlix.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Paul Mundt <lethal@linux-sh.org>, os@emlix.com, dhowells@redhat.com,
       rmk@arm.linux.org.uk, cooloney@kernel.org, geert@linux-m68k.org,
       vapier.adi@gmail.com, gerg@uclinux.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH -v3] flat: fix data sections alignment
Message-ID: <20090527114955.GA23343@emlix.com>
References: <E1LfGwO-0007Kq-6c@mailer.emlix.com> <20090310073350.GH10393@linux-sh.org> <20090402135343.d18d17a5.akpm@linux-foundation.org> <20090409142553.GA3330@emlix.com> <20090505140847.GB25409@emlix.com>
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On Tue, May 05, 2009 at 04:08:47PM +0200, Johannes Weiner wrote:
> On Thu, Apr 09, 2009 at 04:25:53PM +0200, Johannes Weiner wrote:
> > On Thu, Apr 02, 2009 at 01:53:43PM -0700, Andrew Morton wrote:
> > > On Tue, 10 Mar 2009 16:33:50 +0900
> > > Paul Mundt <lethal@linux-sh.org> wrote:
> > > 
> > > > On Thu, Mar 05, 2009 at 06:00:59PM +0100, Oskar Schirmer wrote:
> > > > > The flat loader uses an architecture's flat_stack_align() to align the
> > > > > stack but assumes word-alignment is enough for the data sections.
> > > > > 
> > > > > However, on the Xtensa S6000 we have registers up to 128bit width
> > > > > which can be used from userspace and therefor need userspace stack and
> > > > > data-section alignment of at least this size.
> > > > > 
> > > > > This patch drops flat_stack_align() and uses the same alignment that
> > > > > is required for slab caches, ARCH_SLAB_MINALIGN, or wordsize if it's
> > > > > not defined by the architecture.
> > > > > 
> > > > > It also fixes m32r which was obviously kaput, aligning an
> > > > > uninitialized stack entry instead of the stack pointer.
> > > > > 
> > > > > Signed-off-by: Oskar Schirmer <os@emlix.com>
> > > > > Signed-off-by: Johannes Weiner <jw@emlix.com>
> > > > > Cc: David Howells <dhowells@redhat.com>
> > > > > Cc: Russell King <rmk@arm.linux.org.uk>
> > > > > Cc: Bryan Wu <cooloney@kernel.org>
> > > > > Cc: Geert Uytterhoeven <geert@linux-m68k.org>
> > > > > Cc: Paul Mundt <lethal@linux-sh.org>
> > > > > Cc: Greg Ungerer <gerg@uclinux.org>
> > > > > Cc: Mike Frysinger <vapier.adi@gmail.com>
> > > > 
> > > > The updated version looks ok to me anyways, and it's certainly an
> > > > improvement over defining the same alignment requirements all over the
> > > > place.
> > > > 
> > > > Acked-by: Paul Mundt <lethal@linux-sh.org>
> > > 
> > > Quite a few people expressed quite a few reservations over v2.
> > > 
> > > Are we all OK with a v3 merge?
> > 
> > Paul and Mike had complaints.  Paul acked the last revision.  Mike?
> > We need this for upstream to compile on our configuration.
> 
> Can we get this merged?  Nobody complained.

<periodic echo-request>

What are the plans on this now?  I assume it drowned in other changes...
Is it too late to get this in .30 now?