[ppc64] newer gcc breaks kernel build?

[Roland McGrath]

> On Thu, Sep 17, 2009 at 09:31:52PM +0200, Jakub Jelinek wrote:
> > I've noticed the dot in front of the symbol, is kernel using still the for
> > years deprecated oldish ppc64 ABI instead of the new one (i.e. uses
> > -mcall-aixdesc instead of not using this option at all)?  Maybe it is broken
> > only in that case.

It would be nice if -mcall-aixdesc were even in the GCC manual.