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[Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator.



On 10/25/2010 04:03 PM, Jeremy Fitzhardinge wrote:
> 
> What?  Why?  How?  Surely if we're asking the irq subsystem to allocate
> us an irq, it will return a fresh never-before-used (and certainly not
> shared) irq?  Shared irqs only make sense if multiple devices are
> actually sharing, say, a wire on the board.
> 
> Or am I missing something?
> 

I think the number is not necessarily "never before used", but rather
"not currently used".

        -hpa

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