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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