Re: PCI MSI breaks when booting with nosmp

From: Jean Delvare
Date: Mon Apr 21 2008 - 16:20:24 EST


Hi Andi,

Le lundi 21 avril 2008, Andi Kleen a écrit :
> Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> 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.
>
> If you just want to run with a single cpu for testing etc. always use maxcpus=1
> (not 0, that will disable the APIC too)

In my case, booting with noapic works fine, so I don't think that the problem
is related to APIC being disabled.

--
Jean Delvare
Suse L3
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