Re: weirdness in bootmem_init(), arch/mips64/kernel/setup.c

[Ralf Baechle <ralf@linux-mips.org>]

On Tue, Feb 18, 2003 at 11:27:23AM +0100, Juan Quintela wrote:

> andrew> That test looks like it will always succeed... and it looks like the
> andrew> author wanted it to be a sanity check.
> 
> andrew> Why all this business with PFN_UP and PFN_DOWN?  (They are bit
> andrew> shifts... PFN_UP shifts left, PFN_DOWN shifts right)
> 
> Not completely sure, but I think that it is related with the weird
> discontig memory that Origins (and I think other MIPS machines) have.

It's not used on Origins.

  Ralf