Re: [PATCH] x86: Add check for number of available vectors beforeCPU down [v2]

[Chen, Gong]

On Thu, Dec 19, 2013 at 01:11:32PM -0500, Prarit Bhargava wrote:
> 
> Yep.  The question really is this: is the irq mapped to a single vector or
> multiple vectors. (I think)
> 
> P.
> 
Yes, this is the original thought I want to express on the bugzilla. On an
ideal environment, without irq balance, all vector_irq should own same
values, say, 0xffffffff. So when one CPU is off-lined, your patch will
considers no places to contain these to-be-migrated irqs but the fact is
they are shared on different CPUs. So if we can answer this question,
the answer will be clear :-).

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