[PATCH 1/3] ARM: CSR: Adding CSR SiRFprimaII board support

[Russell King - ARM Linux]

On Wed, Jul 06, 2011 at 02:11:29PM -0400, Nicolas Pitre wrote:
> On Wed, 6 Jul 2011, Arnd Bergmann wrote:
> > If the problem is only with a few platforms, my preference would be
> > to hardcode this to 64k or 0, and leave the platforms that require
> > something else out of the common zImage for now.
> > 
> > For all platforms that only need the 64k window and don't have any
> > of other special needs, I would also like to hardcode the virtual
> > address window eventually, so that inb/outb can still be a single
> > instruction.
> 
> I would say that hardcoding the virtual mapping is probably the first 
> thing to do.  That would certainly simplify the rest of the kernel.

We _used_ to hard-code that mapping, but it became painful to supply
that information into soc_common, which isn't supposed to be ARM
specific.

So going back to hard-coded mappings is a backwards step - essentially
reintroducing one problem which was already solved to resolve a different
problem.

That isn't progress, that's merely changing one resolution for another.