Ivan Krstic wrote:
He has a generally valid point that slimmer,
non-generic kernels are a
good idea on production systems.
It's not a bad idea, but waving it around like it will cure cancer is
pretty useless.
As for DMA, has anyone tried
recompiling a few times and seeing if they can hit the right options? Is
there a non-production machine where this experimentation can be done
without danger?
Yes, I've tried recompiling 2.6.6 on curly without success so far (that
was a week or so ago).
I wrote to Silicon Mechanics to see if they've got any info, and they
claim that:
If you upgrade the kernel to at least 2.4.20-28.9
(this is what I tested
with) DMA will be enabled by default with the default BIOS controller
settings. I highly recommend doing this anyway because there are a
number of local root exploits in all but a few of the very latest
kernels.
Unfortunately that doesn't help much since it *doesn't* work on a shiny
new 2.6.6 kernel so far as I've been able to determine (either custom
compiled or from Red Hat). Of course if the BIOS settings *aren't* the
default, how are we to know? I asked them what might need to be changed,
I'll ask for more details...
-- brion vibber (brion @
pobox.com)