On Friday 17 August 2007 01:06:47 Len Brown wrote:
> On Thursday 16 August 2007 15:36, Andi Kleen wrote:
> > > @@ -157,10 +162,13 @@ early_param("nosmp", nosmp);
> > > static int __init maxcpus(char *str)
> > > {
> > > get_option(&str, &max_cpus);
> > > - return 1;
> > > + if (max_cpus == 0)
> > > + disable_ioapic_setup();
> >
> > I must say I never liked that maxcpus=0 ... does disable the APIC
> > too. There can be situations where you want only a single CPU,
> > but still full APICs because modern systems don't boot without.
>
> maxcpus=1 will give you that.
> new kernel-parameters.txt in patch should say this
> (matching what comment in the code says)
Ok.
> The only reason I fixed it instead of changing it per above
> is because people may be used to it in non ACPI configurations
> and get surprised when it doesn't do exactly the same
> thing (or in this case doesn't boot at all) in an ACPI configuration.
Patch is fine for me.
-Andi
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