Messages in this thread | | | Date | Tue, 22 Aug 2017 09:31:39 -0700 (PDT) | Subject | Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2 vectors | From | David Miller <> |
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From: Christoph Hellwig <hch@lst.de> Date: Tue, 22 Aug 2017 08:35:05 +0200
> On Mon, Aug 21, 2017 at 01:35:49PM -0700, David Miller wrote: >> I ask because the commit log message indicates that this failure is >> not expected to ever happen on SMP. > > I fear my commit message (but not the code) might be wrong. > irq_create_affinity_masks can return NULL any time we don't have any > affinity masks. I've already had a discussion about this elsewhere > with Bjorn, and I suspect we need to kill the warning or move it > to irq_create_affinity_masks only for genuine failure cases.
This is a rather large machine with 64 or more cpus and several NUMA nodes. Why wouldn't there be any affinity masks available?
That's why I want to root cause this.
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