Re: [PATCH 8/25] msi: Simplify the msi irq limit policy.

[Roland Dreier]

 > Only the s2io driver even takes advantage of this feature
 > all other drivers have a fixed number of irqs they need and
 > bail if they can't get them.

My todo list for the mthca (InfiniBand HCA) driver includes adding
support for more event queues.  When I do that, I'll likely want to
try to get something on the order of number_of_cpus plus two or three
MSI-X vectors, and fall back to a lower number of vectors if that
allocation fails.

 - R.
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