linux-kernel - Re: architectures with ARCH_SUPPORTS_AOUT but no binfmt

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Message-ID: <20080624041520.GF22526@linux-sh.org>
Date:	Tue, 24 Jun 2008 13:15:20 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	Peter Korsgaard <jacmet@...site.dk>,
	linux-kernel@...r.kernel.org, sam@...nborg.org,
	dhowells@...hat.com, andi@...stfloor.org,
	"Kirill A. Shutemov" <k.shutemov@...il.com>,
	ysato@...rs.sourceforge.jp, takata@...ux-m32r.org,
	linux-m32r@...linux-m32r.org, kyle@...artin.ca, matthew@....cx,
	grundler@...isc-linux.org, linux-parisc@...r.kernel.org,
	linux-sh@...r.kernel.org
Subject: Re: architectures with ARCH_SUPPORTS_AOUT but no binfmt_aout

On Tue, Jun 17, 2008 at 11:42:35AM +0300, Adrian Bunk wrote:
> On Mon, Jun 16, 2008 at 01:26:54PM +0100, David Woodhouse wrote:
> >...
> > Actually, I think we can drop the preceding patch too -- it's not
> > necessary to fix the regression in 2.6.26, and dhowells suggests that we
> > might still want to use ARCH_SUPPORTS_AOUT, by making BINFMT_AOUT depend
> > on it instead of that hard-coded list of architectures.
> > 
> > If we do that, then ARCH_SUPPORTS_AOUT would need to be defined on a
> > different set of architectures to the ones it's currently defined on --
> > so I don't really want to go there before 2.6.26. I'll push just the
> > parts which were included in the mail I just sent.
> > 
> > Why _are_ there architectures which define ARCH_SUPPORTS_AOUT and have
> > <asm/a.out.h> but don't support binfmt_aout, anyway? How does that make
> > sense?
> 
> My guess would be that binfmt_aout isn't actually used there.
> 
> The affected architectures are:
> - h8300
> - m32r
> - parisc
> - sh
> - v850
> 
> v850 is broken beyond repair, and I hope my patch to remove the 
> architecture will make it into 2.6.27.
> 
> For the other 4 architectures I have Cc'ed the architecture maintainers.
> 
There was never an a.out format for any of sh/h8300/m32r. It's likely
just perpetuated damage copied over from the other ports, as in the
parisc case.
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