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sm-commit - Re: [SM-Commit] GIT changes to master cauldron by Karsten Behrmann (c8826657025d00ccd780bbf03ac4862b815d4c62)

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  • From: Eric Sandall <eric AT sandall.us>
  • To: sm-commit AT lists.ibiblio.org
  • Subject: Re: [SM-Commit] GIT changes to master cauldron by Karsten Behrmann (c8826657025d00ccd780bbf03ac4862b815d4c62)
  • Date: Sat, 24 Feb 2007 10:28:04 -0800

On Saturday 24 February 2007 10:08:39 Jeremy Blosser wrote:
> On Feb 24, Eric Sandall [eric AT sandall.us] wrote:
> > On Saturday 24 February 2007 01:10:19 Juuso Alasuutari wrote:
> > > On Friday 23 February 2007 23:19, Karsten Behrmann wrote:
> > > > GIT changes to master cauldron by Karsten Behrmann
> > > > <BearPerson AT sourcemage.org>:
> > > >
> > > > iso/data/config-2.6 | 979
> > > > ++++++++++++++++++++++++++++++++++++++-------------- 1 files changed,
> > > > 720 insertions(+), 259 deletions(-)
> > > >
> > > > New commits:
> > > > commit c8826657025d00ccd780bbf03ac4862b815d4c62
> > > > Author: Karsten Behrmann <BearPerson AT sourcemage.org>
> > > > Commit: Karsten Behrmann <BearPerson AT sourcemage.org>
> > > >
> > > > Check in new kernel config, thanks muchly to sobukus for making
> > > > one
> > >
> > > <snip>
> > >
> > > > +# CONFIG_SMP is not set
> > >
> > > My guesstimate based on Debian's kernel config is that SMP can be
> > > enabled by default. The Debian linux-image-2.6-686-smp package is a
> > > meta package for linux-image-2.6-686, which in turn is a meta package
> > > for
> > > linux-image-2.6.18-4-686. Multi-core CPUs are becoming commonplace and
> > > the SMP setting apparently causes no harm on single-core systems. But
> > > we'd still need to test this in practice too just to make sure.
> >
> > FYI,
> >
> > SMP breaks on my single-CPU Athlon-XP with an nForce2 board. :(
>
> There was a huge amount of debate on this in -cauldron when the kernel
> config was being written, the end result was basically leaving it without
> SMP, but people really wanting details on what it would still break to turn
> it on. So thanks for at least one example. Do you have any more info on
> why it breaks there?
>
> How about if someone who really wants the SMP choice from the installer
> files a bug to have both kernels included in 0.9.7 or 0.9.8?

I think it's a bug in the APIC controller, since enabling IO-APIC *also*
breaks on my box. At least it did a few years ago when I last tried,
SMP/IO-APIC *may* work now, I will try it out and let you know.

-sandalle

--
Eric Sandall | Source Mage GNU/Linux Developer
eric at sandall.us PGP: 0xA8EFDD61 | http://www.sourcemage.org/
http://eric.sandall.us/ | http://counter.li.org/ #196285

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