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

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Date:   Tue, 15 Aug 2017 23:24:18 +0300 (EEST)
From:   Meelis Roos <mroos@...ux.ee>
To:     Bjorn Helgaas <helgaas@...nel.org>
cc:     sparclinux@...r.kernel.org, linux-pci@...r.kernel.org,
        qla2xxx-upstream@...gic.com,
        Linux Kernel list <linux-kernel@...r.kernel.org>,
        Christoph Hellwig <hch@....de>
Subject: Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2
 vectors

> On Tue, Aug 15, 2017 at 05:54:27PM +0300, Meelis Roos wrote:
> > I noticed that in 4.13.0-rc4 there is a new error in dmesg on my sparc64 
> > t5120 server: can't allocate MSI-X affinity masks.
> > 
> > [   30.274284] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 10.00.00.00-k.
> > [   30.274648] qla2xxx [0000:10:00.0]-001d: : Found an ISP2432 irq 21 iobase 0x000000c100d00000.
> > [   30.275447] qla2xxx 0000:10:00.0: can't allocate MSI-X affinity masks for 2 vectors
> > [   30.816882] scsi host1: qla2xxx
> > [   30.877294] qla2xxx: probe of 0000:10:00.0 failed with error -22
> > [   30.877578] qla2xxx [0000:10:00.1]-001d: : Found an ISP2432 irq 22 iobase 0x000000c100d04000.
> > [   30.878387] qla2xxx 0000:10:00.1: can't allocate MSI-X affinity masks for 2 vectors
> > [   31.367083] scsi host1: qla2xxx
> > [   31.427500] qla2xxx: probe of 0000:10:00.1 failed with error -22
> > 
> > I do not know if the driver works since nothing is attached to the FC 
> > HBA at the moment, but from the error messages it looks like the driver 
> > fails to load.
> > 
> > I booted 4.12 and 4.11 - the red error is not there but the failure 
> > seems to be the same error -22:

4.10.0 works, 4.11.0 errors out with EINVAL and 4.13-rc4 errorr sout 
with more verbose MSI messages. So something between 4.10 and 4.11 has 
broken it.

Also, 4.13-rc4 is broken on another sun4v here (T1000). So it seems to 
be sun4v interrupt related.

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