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

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Date:   Mon, 21 Aug 2017 22:20:22 +0300 (EEST)
From:   mroos@...ux.ee
To:     Christoph Hellwig <hch@....de>
cc:     David Miller <davem@...emloft.net>, helgaas@...nel.org,
        sparclinux@...r.kernel.org, linux-pci@...r.kernel.org,
        qla2xxx-upstream@...gic.com, linux-kernel@...r.kernel.org
Subject: Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2
 vectors

> I think with this patch from -rc6 the symptoms should be cured:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c005390374957baacbc38eef96ea360559510aa7
> 
> if that theory is right.

The result with 4.13-rc6 is positive but mixed: the message about MSI-X 
affinty maks are still there but the rest of the detection works and the 
driver is loaded successfully:

[   29.924282] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 10.00.00.00-k.
[   29.924710] qla2xxx [0000:10:00.0]-001d: : Found an ISP2432 irq 21 iobase 0x000000c100d00000.
[   29.925581] qla2xxx 0000:10:00.0: can't allocate MSI-X affinity masks for 2 vectors
[   30.483422] scsi host1: qla2xxx
[   35.495031] qla2xxx [0000:10:00.0]-00fb:1: QLogic QLE2462 - SG-(X)PCIE2FC-QF4, Sun StorageTek 4 Gb FC Enterprise PCI-Express Dual Channel H.
[   35.495274] qla2xxx [0000:10:00.0]-00fc:1: ISP2432: PCIe (2.5GT/s x4) @ 0000:10:00.0 hdma- host#=1 fw=7.03.00 (9496).
[   35.495615] qla2xxx [0000:10:00.1]-001d: : Found an ISP2432 irq 22 iobase 0x000000c100d04000.
[   35.496409] qla2xxx 0000:10:00.1: can't allocate MSI-X affinity masks for 2 vectors
[   35.985355] scsi host2: qla2xxx
[   40.996991] qla2xxx [0000:10:00.1]-00fb:2: QLogic QLE2462 - SG-(X)PCIE2FC-QF4, Sun StorageTek 4 Gb FC Enterprise PCI-Express Dual Channel H.
[   40.997251] qla2xxx [0000:10:00.1]-00fc:2: ISP2432: PCIe (2.5GT/s x4) @ 0000:10:00.1 hdma- host#=2 fw=7.03.00 (9496).
[   51.880945] qla2xxx [0000:10:00.0]-8038:1: Cable is unplugged...
[   57.402900] qla2xxx [0000:10:00.1]-8038:2: Cable is unplugged...

With Dave Millers patch on top of 4.13-rc6, I see the following before 
both MSI-X messages:

irq_create_affinity_masks: nvecs[2] affd->pre_vectors[2] affd->post_vectors[0]

-- 
Meelis Roos (mroos@...ux.ee)