Re: [PATCH v6] x86/apic: limit irq affinity

[Dimitri Sivanich]

On Sat, Nov 21, 2009 at 10:49:50AM -0800, Eric W. Biederman wrote:
> Dimitri Sivanich <sivanich@xxxxxxx> writes:
> 
> > This patch allows for hard numa restrictions to irq affinity on x86 systems.
> >
> > Affinity is masked to allow only those cpus which the subarchitecture
> > deems accessible by the given irq.
> >
> > On some UV systems, this domain will be limited to the nodes accessible
> > to the irq's node.  Initially other X86 systems will not mask off any cpus
> > so non-UV systems will remain unaffected.
> 
> Is this a hardware restriction you are trying to model?
> If not this seems wrong.

Yes, it's a hardware restriction.
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