Changing affinity of MSI interrupt fails on HWCI runner

[Steffen Vogel]

[07:33:26] [error] [pcie_0_axi_pcie_intc_0] Failed to change affinity of VFIO-MSI interrupt

(https://git.rwth-aachen.de/acs/public/villas/VILLASfpga-code/-/jobs/86329)

This error is expected as the HWCI runner runs jobs with uid != 0.

@daniel-k Maybe should start testing the code also without root permissions.
(Just add yourself to the the group called fpga on the acs-villas machine to get the privileges to access the FPGA)

[Steffen Vogel]

The error is triggered here:

https://git.rwth-aachen.de/acs/public/villas/VILLASfpga-code/blob/develop/lib/kernel/kernel.c#L269

[Steffen Vogel]

Changing the MSI interrupt affinity is optional and usually only done to reduce the jitter/latency which occurs due to the cross-core scheduling...

I would suggest that we only change the affinity in case we run as root.
On the CI runner, we could show a warning message in the log that the IRQ affinity hasnt been changed..

[Steffen Vogel]

we dont use the HWCI runner anymore

[Steffen Vogel]

closed