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SubjectRe: [BUG] linux-2.6.28-rc3 regression: IRQ smp_affinities not respected
Eric Dumazet a écrit :
> Michael Chan a écrit :
>> I believe this may be the patch that broke it:
>>
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ce6fce4295ba727b36fdc73040e444bd1aae64cd
>>
>>
>> I don't remember all the details, but the Broadcom 5708 chip is
>> affected because it does not support MSI per-vector masking.
>>
>> One way to get around is to disable MSI with bnx2 parameter
>> disable_msi=1.
>>

>
> I tried this MSI disabling and yes, it now works.
>
> 16: 42726 128 105 106 89
> 89 145 152 IO-APIC-fasteoi uhci_hcd:usb1, eth0, eth1
>

I believe the bnx2 driver doesnt work at all if !disable_msi (default setting)

Doing a "echo 0 >/sys/devices/system/cpu/cpu1/online" just freeze network

No messages logged

If loaded with disable_msi=1, the cpu unplug works as expected.

Thats a pretty serious issue.


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