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    SubjectRe: architectures with ARCH_SUPPORTS_AOUT but no binfmt_aout
    On Tue, Jun 17, 2008 at 10:46:44AM +0100, David Woodhouse wrote:
    > 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.

    include/linux/a.out.h contains an #include <asm/a.out.h> and is exported
    to userspace...

    > 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).

    The pattern for this stuff is to provide a HAVE_AOUT kconfig variable
    that gets select'ed by these architectures.

    > dwmw2

    cu
    Adrian

    --

    "Is there not promise of rain?" Ling Tan asked suddenly out
    of the darkness. There had been need of rain for many days.
    "Only a promise," Lao Er said.
    Pearl S. Buck - Dragon Seed



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