[+cc Don Dutile] On Tue, Aug 13, 2013 at 8:23 PM, Bjorn Helgaas <bhelg...@google.com> wrote: > On Tue, Aug 13, 2013 at 3:54 PM, Skidmore, Donald C > <donald.c.skidm...@intel.com> wrote: > >> We were unable to recreate your failure here locally so I have some >> additional questions. First off you mentioned it was failing as far back as >> v3.9, was it ever working for you? If so bisecting would be really helpful >> as I mentioned we have been unable to cause the failure in house. > > I'm not aware of any working version. I'm exercising in the sysfs > SR-IOV configuration, which I think appeared in v3.8 or so. > >> If not could you see if the problem still occurs without the external Magma >> PCIe expansion chassis, this is of course assuming that you can plug the >> X540 into your system without it. > > I played with this a little more and found this: > > 1) Magma card in z420, connected to chassis containing X540: fails > (original report) > 2) X540 in z420, Magma card in z420, connected to empty chassis: fails > 3) X540 in z420, Magma card in z420 but no cable to chassis: works > > The only difference I've noticed so far between configs 2 & 3 are > different bus numbers and different IRQ assignments: > > Config 2 (failing): > pci 0000:0c:00.0: [8086:1528] type 00 class 0x020000 > pci 0000:0c:00.0: reg 0x10: [mem 0xdac00000-0xdadfffff 64bit pref] > ixgbe 0000:0c:00.0: irq 82 for MSI/MSI-X > IRQ 79: 79 > IRQ 80: eth0 > IRQ 81: snd_hda_intel > IRQ: 82-93 eth1-TxRx-0 through eth1-TxRx-11 > IRQ 94: eth1 > > Config 3 (working): > pci 0000:04:00.0: [8086:1528] type 00 class 0x020000 > pci 0000:04:00.0: reg 0x10: [mem 0xdac00000-0xdadfffff 64bit pref] > ixgbe 0000:04:00.0: irq 75 for MSI/MSI-X > IRQ 72: ahci > IRQ 73: eth0 > IRQ 74: snd_hda_intel > IRQ 75-86: eth1-TxRx-0 through eth1-TxRx-11 > IRQ 87: eth1 > > I'll try to narrow this down a little more; I'm just giving you this > preliminary info in case it rings any bells for you.
Sorry, I haven't gotten anywhere with this yet. I opened https://bugzilla.kernel.org/show_bug.cgi?id=60776 and attached logs and lspci info from v3.11-rc6. Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
