When people explain the difference between threads and fibers, they often refer to the fact that fibers are in "user space". What does "user space" mean?
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Not kernel space. IOW, fibers don't run in ring 0. – Ken White Jun 17 '15 at 19:13
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All that tells me is that I need to learn a LOT more about OSs. Is there more you can give to make it clearer? I'll understand if you don't think so. – Jacob Zimmerman Jun 17 '15 at 20:33
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1The first answer to [What are Ring 0 and Ring 3 in OS](http://stackoverflow.com/q/18717016/62576) has some useful links. – Ken White Jun 17 '15 at 20:36