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Can somebody in the know comment on the use of tail call removal and inlining in the kernel? Is it common or rare? If it is common, this approach won't work very well. It will certainly tend to become more common if kernel builds get more and more optimized over time.
Are there any analogs to setjmp/longjmp or exception handling that we would have to deal with? These use the return address in user level code but maybe they aren't problems in the kernel.
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