Re: [PATCH 11/14] irq: add support for allocating (and affinitizing) sets of IRQs

On Tue, Oct 30, 2018 at 08:53:37AM -0600, Jens Axboe wrote:

The sum of the set can't exceed the nvecs passed in, the nvecs passed in
should be the less than or equal to nvecs. Granted this isn't enforced,
and perhaps that should be the case.

That should at least initially be true for a proper functioning
driver. It's not enforced as you mentioned, but that's only related to
the issue I'm referring to.

The problem is pci_alloc_irq_vectors_affinity() takes a range, min_vecs
and max_vecs, but a range of allowable vector allocations doesn't make
sense when using sets.