Subject: Re: architectures with ARCH_SUPPORTS_AOUT but no binfmt_aout
From: David Woodhouse <dwmw2@infradead.org>
To: Adrian Bunk <bunk@kernel.org>
Cc: Peter Korsgaard <jacmet@sunsite.dk>, linux-kernel@vger.kernel.org,
       sam@ravnborg.org, dhowells@redhat.com, andi@firstfloor.org,
       "Kirill A. Shutemov" <k.shutemov@gmail.com>, ysato@users.sourceforge.jp,
       takata@linux-m32r.org, linux-m32r@ml.linux-m32r.org, kyle@mcmartin.ca,
       matthew@wil.cx, grundler@parisc-linux.org, linux-parisc@vger.kernel.org,
       lethal@linux-sh.org, linux-sh@vger.kernel.org,
       linux-arch@vger.kernel.org
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Date: Tue, 17 Jun 2008 10:46:44 +0100
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On Tue, 2008-06-17 at 11:42 +0300, Adrian Bunk wrote:
> 
> > 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's another set of architectures which have <asm/a.out.h> but don't
define ARCH_SUPPORTS_AOUT. Including PowerPC.

I think we can probably get away with removing <asm/a.out.h> from every
architecture other than Alpha, ARM, m68k and x86, and killing
ARCH_SUPPORTS_AOUT completely.

Or maybe, as dhowells suggests, re-defining ARCH_SUPPORTS_AOUT to be set
only on Alpha, ARM, m68k and x86 (so BINFMT_AOUT can depend on it).

-- 
dwmw2

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