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SubjectRe: PCI MSI breaks when booting with nosmp
On Mon 2008-04-21 21:44:34, Andi Kleen wrote:
> Pavel Machek wrote:
> > On Mon 2008-04-21 20:45:05, Andi Kleen wrote:
> >> Jesse Barnes <jbarnes@virtuousgeek.org> writes:
> >>> Ok, I see this too on my desktop machine. It looks like we're not getting
> >>> interrupts setup correctly in the nosmp case. Still digging through to see
> >>> why though...
> >> NoSMP disables the io-apic and a lot of modern systems don't work
> >> without APIC.
> >
> > Are you sure? I still boot DOS on very recent boxes, and they seem to
> > work. How can PC-compatible machine require an APIC?
>
> The machine doesn't, but the drivers do. DOS likely doesn't use all
> hardware.

Should we be fixing drivers?

Do drivers even know? I'd expect core code in arch/x86 to shield
details of interrupt routing from them..

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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