[libre-riscv-dev] spinlocks considered harmful

[Jacob Lifshay]

I ended up reporting a bug to PyO3 to not use spinlocks, the explanatory
blog post I liked to is quite informative and I'd consider it recommended
reading for anyone writing multi-threaded programs and/or using atomics:

https://matklad.github.io/2020/01/02/spinlocks-considered-harmful.html

Bug report:
https://github.com/PyO3/pyo3/issues/916

Jacob