13 Feb
2017
13 Feb
'17
6:34 p.m.
2017-02-13 8:19 GMT+01:00 Andrey Petrov andrey.petrov@intel.com:
tl;dr: We are considering adding early parallel code execution in coreboot. We need to discuss how this can be done.
It's reasonable to discuss the "if" first.
Nowadays we see firmware getting more complicated.
The coreboot mantra isn't just "boot fast", but also "boot simple".
On your "scheduler or MPinit" question, _if_ we have to go down that route: I'd prefer a cooperative threaded single core scheduler, for one simple reason: it's easier to reason about the correctness of code that only ever ceases control at well-defined yield points. As you said, those tasks are not CPU bound. We also don't need experimental ucode for that even when running threads in CAR ;-)
Patrick