Messages in this thread | | | Date | Sat, 21 Nov 2009 19:14:57 -0600 | From | Dimitri Sivanich <> | Subject | Re: [PATCH v6] x86/apic: limit irq affinity |
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On Sat, Nov 21, 2009 at 10:49:50AM -0800, Eric W. Biederman wrote: > Dimitri Sivanich <sivanich@sgi.com> 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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