[Xen-devel] Re: [PATCH v2 1/2] x86: skip migrating IRQF_PER_CPU irq in fixup_irqs

[Thomas Gleixner <tglx@xxxxxxxxxxxxx>]

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.

Thanks,

        tglx

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