RTEMS | bsp/aarch64:SMP improvement on aarch64 (#5064)

Sat Sep 21 15:56:00 UTC 2024

Sebastian Huber commented: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5064#note_112412

Using a single global object to pass data to the started core is very brittle. You cannot start cores in parallel with this implementation. The CPU_ON request has a context_id parameter, see Arm Power State Coordination Interface - Platform Design Document:

https://developer.arm.com/documentation/den0022/frel/?lang=en

You can use it to pass for example the processor index to the started core.

With respect to the SGI interface changes. We should first simplify the internal API. The target list parameter has to go away and should be replaced by a target index.

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5064#note_112412
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