Re: Does HIGHMEM work on 32-bit MIPS ports?

[David VomLehn <dvomlehn@cisco.com>]

 > I've written MIPS highmem support in late 2002 for a customer who
 > back then wasn't interested in being the first through the 64-bit
 > minefield. Which back then certainly was justified - but there are
 > now fairly stable 64-bit Linux kernels available so if you happen to
 > be running on 64-bit hardware don't even spend a nanosecond on
 > thinking about 32-bit highmem kernels.  Highmem fundamentally sucks
 > rocks through a straw.
 >
 > Coming back to your question.  Highmem was only ever tested to work
 > on SB1 and somewhat later PMC-Sierra RM9000 cores, both being 64-bit.
 > With the increasing maturity of 64-bit Linux interest in these went
 > away and as the result the highmem code started a slow bitrot -
 > unnoticed for many moons.

Hmm, this is not good. I've got a MIPS 24Kc processor with a very 
awkward memory layout. Any hints?

 >   Ralf
-- 
David VomLehn, dvomlehn@cisco.com
The opinions expressed herein are likely mine, but might not be my 
employer's...