On Thu, 1 Dec 2005, Gerhard Pircher wrote:
Did you have other unreleased patches, too? Anyway it would be good, if you
could comment on these patches, as I'm just beginning to understand how the
Linux kernel works. Therefore I really appreciate any help!
About the inadequate cooling: I have mounted a proper cooler on my CPU card
(a Athlon XP 2.2GHz cooler), but I experienced build errors during compiling
the Linux kernel, so IMHO there are other things wrong too (don't know how
to track down this problem :-( ).
No, my supply of patches for the A1 is all out there - I was playing
with something shortly before my machine died, but it didn't seem to
help. Unfortunately, the hardware is almost designed not to be properly
cooled (no safe/sane way to mount a conventional bigger cooler), and my
impression is that you can easily fit a cooler so that it isn't in
proper contact with the processor. That's ignoring different opinions
about voltage settings. It also seems to be excessively choosy about
memory chips.
But then, I've never understood many of the details. My only comment
on your patches is that you make some allowance for highmem - my
impression was that the memory mapping probably did NOT easily support
highmem (I get confused between physical and virtual addresses, but the
defaults in arch-ppc seemed to conflict with where the A1 had its i/o),
and therefore I'm puzzled if you have tested this option ?
I think you understand a lot more about this than I ever did, and you
are obviously in contact with somebody on the os4 side who is likely to
understand the hardware, or at least have whatever docs there are. My
"expertise" was primarily in reading the 2.5 patches to see what had
changed, and in testing workarounds.
The authorship of the original 2.4 patches is vague - I
think Ross told me that his work was mostly admin (apart
from the floppy code), most of it seems to have come from
the Friedens or Bill Mueller, although clearly based on
other 2.4 ppc code.
That's right. I think most of the code came from the "Frieden brothers".
AFAIK the only things Bill M?ller was working on, were the AGPGART and a
patch for the IDE driver.
Atleast I could port the floppy driver code, which is just a copy of the
i386 floppy driver.
You mean people do still use floppies ? I remember somebody with a
pegasos posted a patch a few months ago on ppc-dev, but I don't remember
the outcome.
Ken
--
das eine Mal als Trag?die, das andere Mal als Farce
