[PATCH] powerpc: remove fpscr use from [kvm_]cvt_{fd,df}

[Benjamin Herrenschmidt]

On Tue, 2010-08-24 at 15:15 +1000, Michael Neuling wrote:
> > > Do some 32 bit processors need this? 
> > > 
> > > In 32 bit before the merge, we use to have code that did:
> > > 
> > >   #if defined(CONFIG_4xx) || defined(CONFIG_E500)
> > >    #define cvt_fd without save/restore fpscr
> > >   #else
> > >    #define cvt_fd with save/restore fpscr
> > >   #end if
> > > 
> > > Kumar; does this ring any bells?
> > 
> > I don't see anything in the various 440 docs I have at hand that would
> > hint at lfd/stfs adffecting FPSCR.
> 
> The way the ifdefs are, it's the other way around.  4xx procs don't need
> to save/restore fpscr and others do.

Right, my bad. In any case, Paulus reckons it's all his mistake and we
really never need to save/restore fpscr.

Cheers,
Ben.