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

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> On 09.05.11 at 14:39, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> 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.

Why shouldn't it be possible o use the same "chip" for both per-CPU
and "normal" IRQs?

Jan


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