On Tue, 2006-01-24 at 23:59 -0800, Andrew Morton wrote:
> Andi Kleen <[email protected]> wrote:
> >
> > On Wednesday 25 January 2006 08:10, Andrew Morton wrote:
> >
> > > It assumes that all x86 SMP machines have APICs. That's untrue of Voyager.
> > > I think we can probably live with this assumption - others would know
> > > better than I.
> >
> > Early x86s didn't have APICs and they are still often disabled on not so
> > old mobile CPUs. I don't think it's a good assumption to make for i386.
> >
>
> But how many of those do SMP?
even on SMP boxes you regularly need to (runtime) disable apics. Several
boards out there just have busted apics, or at least when used with
linux. "noapic" is one of the more frequent things distro support people
tell customers over the phone....
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