On 05/10/2013 01:47 PM, Andy Lutomirski wrote:
> On Fri, May 10, 2013 at 11:45 AM, Corey Minyard <[email protected]> wrote:
>> On 05/10/2013 01:31 PM, Andy Lutomirski wrote:
>>> On Fri, May 10, 2013 at 5:16 AM, Corey Minyard <[email protected]>
>>> wrote:
>>>> On 05/09/2013 04:00 PM, Andy Lutomirski wrote:
>>>>> IPMI in polled mode sucks enough that this warning is alarming:
>>>>>
>>>>> ipmi_si ipmi_si.0: Could not enable interrupts, failed set, using polled
>>>>> mode.
>>>>>
>>>>> On two of my Dell gen 7 (I think) servers, this warning prints, but
>>>>> IPMI uses interrupts.  Can the warning be fixed?
>>>>>
>>>>> (I have a server that says this, and IPMI, if loaded, sucks CPU.  That
>>>>> server should keep the warning.)
>>>>
>>>> That warning means that it tried to send the command to enable
>>>> interrupts,
>>>> and the command failed.  The controller is supposed to accept that
>>>> command
>>>> if it has interrupts, so there's not really a way, outside of some sort
>>>> of
>>>> blacklist, for the code to know that a system has interrupts even if the
>>>> command fails.
>>>>
>>> Somehow the driver manages not to poll on this system.  How does that
>>> work?
>>
>> In that particular instance, interrupts are still enabled and configured and
>> will come in and be handled.  It does not enable polling mode in that
>> instance, and will run slowly if interrupts don't really work.  That's the
>> decision I made in that case.  If the hardware advertises interrupts but
>> does not support enable, I'd guess it still has interrupts.
> In that case, can the driver also print a more informative warning
> like "Failed to enable interrupts; depending on how your hardware is
> buggy, either everything is okay or ipmi will be very slow."?

That's probably a good idea, I'll add that.

Thanks,

-corey

> --Andy


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