added Linux-pci
Jesse Brandeburg wrote:
> On 1/16/07, Allen Parker <[email protected]> wrote:
>> Allen Parker wrote:
>>> I have a PCI-E pro/1000 MT Quad Port adapter, which works quite well
>>> under 2.6.19.2 but fails to see link under 2.6.20-rc5. Earlier
>>> today I reported this to [email protected], but thought I
>>> should get the word out in case someone else is testing this kernel
>>> on this nic chipset.
>
> Upon some further investigation with Allen, I got this info, and it
> appears that his system is not freeing MSI irq's correctly.
>
> from our discussion:
>> Allen wrote:
>>> Jesse Brandeburg wrote:
>>> I believe you may have an interrupt delivery problem, due to kernel
>>> changes. When you don't get interrupts delivered correctly, you may
>>> not achieve link up.
>>>
>>> you can try disabling CONFIG_PCI_MSI in the kernel, as another
>>> trouble shooting step. Also, what model motherboard/machine are you
>>> using, and please check to make sure your BIOS is up to date.
>>
>> CONFIG_PCI_MSI seems to fix it as well, however, i'm not sure about
>> possible performance implications with leaving it turned off.
>>
>> Tyan S2927G2NR w/ 2x Opteron 2210 bios rev 1.02 iirc
>
> Also, here is an excerpt of his his proc/interrupts
> Allen Parker wrote:
> CPU0 CPU1 CPU2 CPU3
> 498: 1 8 129 8723 PCI-MSI-edge eth3
> 499: 0 42 122 17135 PCI-MSI-edge eth2
> 500: 0 19 275 1418326 PCI-MSI-edge eth1
> 501: 0 0 0 0 PCI-MSI-edge eth1
> 502: 0 414 26 25227 PCI-MSI-edge eth1
> 503: 0 37 264 1418695 PCI-MSI-edge eth0
> 504: 0 0 0 139 PCI-MSI-edge eth0
> 505: 0 6 714 22806 PCI-MSI-edge eth0
> NMI: 275 207 225 262
> LOC:3531851 3531829 3531805 3531778
> ERR: 0
>
> The disturbing bit is that on this Hypertransport to PCIe system, his
> interrupts appear to be getting registered multiple times on different
> IRQ numbers.
>
> help?
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