Re: [PATCH 0/3] Enable multiple MSI feature in pSeries

[Mike Qiu <qiudayu@linux.vnet.ibm.com>]

于 2013/5/21 22:45, Alexander Gordeev 写道:
> On Tue, Jan 15, 2013 at 03:38:53PM +0800, Mike Qiu wrote:
>> The test results is shown by 'cat /proc/interrups':
>>            CPU0       CPU1       CPU2       CPU3
>> 16:     240458     261601     226310     200425      XICS Level     IPI
>> 17:          0          0          0          0      XICS Level     RAS_EPOW
>> 18:         10          0          3          2      XICS Level     hvc_console
>> 19:     122182      28481      28527      28864      XICS Level     ibmvscsi
>> 20:        506    7388226        108        118      XICS Level     eth0
>> 21:          6          5          5          5      XICS Level     host1-0
>> 22:        817        814        816        813      XICS Level     host1-1
> Hi Mike,
>
> I am curious if pSeries firmware allows changing affinity masks independently
> for multiple MSIs? I.e. in your example, would it be possible to assign IRQ21
> and IRQ22 to different CPUs?
Yes, as Ben says, this is very different from other firmware :)

Thanks
Mike
>
> Thanks!
>
>> LOC:     398077     316725     231882     203049   Local timer interrupts
>> SPU:       1659        919        961        903   Spurious interrupts
>> CNT:          0          0          0          0   Performance
>> monitoring interrupts
>> MCE:          0          0          0          0   Machine check exceptions