Re: [PATCH v3 1/8] tests/functional: Add remote interrupts test for PowerNV

[Aditya Gupta <adityag@linux.ibm.com>]

On 29/06/26 20:13, Cédric Le Goater wrote:
> On 6/29/26 13:39, Aditya Gupta wrote:
>> On 26/06/29 01:20PM, Cédric Le Goater wrote:
>>> On 6/29/26 13:04, Aditya Gupta wrote:
>>>> In the past there have been hard to recreate issues where XIVE changes
>>>> cause qemu crashes due to multi-socket interrupts such as in [1].
>>>>
>>>> Add a functional test explicitly to test whether remote interrupts 
>>>> work.
>>>>
>>>> The test can also work as additional boot test for multi-socket boot,
>>>> initrd boot test, as well as a check for e1000e to be working in 
>>>> powernv,
>>>
>>> you should consider moving to a more modern nic model: igb, which
>>> has sr-iov support too.
>>
>> yes, can do. with igb i see multiple irqs, so test will have to take sum
>> of all rx irqs, and compare:
>>
>>     2026-06-29 17:00:46,288: cat /proc/interrupts | grep eth0
>>     2026-06-29 17:00:46,391: 135:          0          0 0  
>> PNV-PCI-MSI 2416443392 Edge      eth0
>>     2026-06-29 17:00:46,393: 136:          0          6 0  
>> PNV-PCI-MSI 2416443393 Edge      eth0-rx-0
>>     2026-06-29 17:00:46,394: 137:          0         14 0  
>> PNV-PCI-MSI 2416443394 Edge      eth0-rx-1
>>     2026-06-29 17:00:46,395: 138:          0          4 0  
>> PNV-PCI-MSI 2416443395 Edge      eth0-rx-2
>>     2026-06-29 17:00:46,397: 139:          0          4 0  
>> PNV-PCI-MSI 2416443396 Edge      eth0-rx-3
>>     2026-06-29 17:00:46,398: 140:          0         16 0  
>> PNV-PCI-MSI 2416443397 Edge      eth0-tx-0
>>     2026-06-29 17:00:46,399: 141:          0          6 0  
>> PNV-PCI-MSI 2416443398 Edge      eth0-tx-1
>>     2026-06-29 17:00:46,399: 142:          0          6 0  
>> PNV-PCI-MSI 2416443399 Edge      eth0-tx-2
>>     2026-06-29 17:00:46,400: 143:          0          4 0  
>> PNV-PCI-MSI 2416443400 Edge      eth0-tx-3
>>
>> I feel e1000e suffices for this test, should i stay with e1000e or use
>> igb here ?
>
> or use a single cpu per socket config. Which seems better for the test.


The test uses single cpu per socket, since i have `-smp 
4,sockets=4,threads=1`. Was this what you meant ?

Thanks,
- Aditya G