On Wed, May 09, 2007 at 09:37:22PM +1000, Paul Mackerras wrote:
> Suparna Bhattacharya writes:
>
> > > Of course the interface used by an application program would have the
> > > fd first. Glibc can do the translation.
> >
> > I think that was understood.
>
> OK, then what does it matter what the glibc/kernel interface is, as
> long as it works?
>
> It's only a minor point; the order of arguments can vary between
> architectures if necessary, but it's nicer if they don't have to.
> 32-bit powerpc will need to have the two int arguments adjacent in
> order to avoid using more than 6 argument registers at the user/kernel
> boundary, and s390 will need to avoid having a 64-bit argument last
> (if I understand it correctly).
You are right to say that. But, it may not be _that_ a minor point,
especially for the arch which is getting affected. It has
other implications like what Heiko noticed in his post below:
http://lkml.org/lkml/2007/4/27/377
- implications like modifying glibc and *trace utilities for a particular
arch.
--
Regards,
Amit Arora
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