Sunday, November 17, 2019
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Ask HN: Recommended resources to learn the Linux kernel and OS...

Yes, there is just so much, and it is not thoroughly documented. "BPF maps" in particular are a) a special feature of a special feature that's Linux-specific, not anything that generalizes across OSes, and b) a feature for userspace anyway, not for kernel internals. But even longstanding kernel-internal features aren't well documented (e.g., the other…