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Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2 vectors

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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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4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors Meelis Roos <mroos@linux.ee> - 2017-08-15 17:00 +0200
  Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors Bjorn Helgaas <helgaas@kernel.org> - 2017-08-15 20:50 +0200
    Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors Meelis Roos <mroos@linux.ee> - 2017-08-15 22:30 +0200
      Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors Meelis Roos <mroos@linux.ee> - 2017-08-16 20:40 +0200
        Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors Bjorn Helgaas <helgaas@kernel.org> - 2017-08-16 21:10 +0200
          Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors Meelis Roos <mroos@linux.ee> - 2017-08-17 16:50 +0200
          Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors David Miller <davem@davemloft.net> - 2017-08-21 20:30 +0200
            Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2         vectors Christoph Hellwig <hch@lst.de> - 2017-08-21 20:40 +0200
              Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors mroos@linux.ee - 2017-08-21 21:30 +0200
                Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors David Miller <davem@davemloft.net> - 2017-08-21 22:40 +0200
                Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors Meelis Roos <mroos@linux.ee> - 2017-08-22 07:10 +0200
                Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2         vectors Christoph Hellwig <hch@lst.de> - 2017-08-22 08:40 +0200
                Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors Meelis Roos <mroos@linux.ee> - 2017-08-22 18:40 +0200
                Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors David Miller <davem@davemloft.net> - 2017-08-22 18:50 +0200
                Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2         vectors Christoph Hellwig <hch@lst.de> - 2017-08-22 18:40 +0200
                Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors David Miller <davem@davemloft.net> - 2017-08-22 19:00 +0200
                Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors David Miller <davem@davemloft.net> - 2017-08-22 18:40 +0200
        Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2         vectors Christoph Hellwig <hch@lst.de> - 2017-08-17 12:10 +0200
          Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2  vectors Meelis Roos <mroos@linux.ee> - 2017-08-17 12:20 +0200

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