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SubjectRE: [PATCH v2 1/2] x86: skip migrating IRQF_PER_CPU irq in fixup_irqs
> From: Thomas Gleixner [mailto:tglx@linutronix.de]
> Sent: Monday, May 09, 2011 8:39 PM
>
> On Fri, 6 May 2011, Konrad Rzeszutek Wilk wrote:
> > On Fri, May 06, 2011 at 02:43:36PM +0800, Tian, Kevin wrote:
> > > because Xen event chip silently fails the set_affinity ops, and
> > > logically IRQF_PER_CPU should be recognized here.
> >
> > OK, so what if the set_affinity ops was implemented?
>
> An interrupt chip which has a set_affinity op should not mark something per
> cpu, which implies that the irq CANNOT be moved.
>

If this is the hard requirement, why not throwing out an error when a chip
is registered?

Thanks
Kevin


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