Re: State of the Linux PCI and PCI Hotplug Subsystems for 2.6.16-rc5

From: Linus Torvalds
Date: Thu Mar 09 2006 - 15:25:49 EST




On Thu, 9 Mar 2006, Ben Collins wrote:
>
> The difference between our 2.6.15 386 and 686 kernels is actually pretty
> huge. The 386 is M486, and UP, while our 686 kernel is M686, and SMP.

Ok, that's actually better than a _real_ M386. At least M486 has most of
the new instructions statically. But the SMP thing obviously makes a big
difference.

Can you get your tester to try "ctrl + scroll-lock" to see if it outputs
anything?

> So the problem would seem to be narrowed down to between M486 and M686.

Well, SMP ends up being a big issue, and adds tons of things. It would be
very interesting to hear whether a M686 _UP_ kernel shows the same
problem.

Linus
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