32-bit MIPS with > 512mb mem

[Ralf Baechle <ralf@oss.sgi.com>]

Is anybody using 32-bit MIPS CPUs which have more than 512mb of memory or
to be more exact have RAM that isn't accessible via the KSEG0 / KSEG1
window?

So far I haven't ever seen such a machine.  For 64-bit CPUs the right
thing to do is easy - use a 64-bit kernel.  But for 32-bit CPUs the Intel
highmem stuff in the memory managment now gives us a sane way to use
the memory of such configuration with just a little bit of extra code.

So if anybody wants support for such a configuration, please drop me a
note.

Thanks,

  Ralf