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SubjectRe: linux-next: add utrace tree
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Ingo Molnar <mingo@elte.hu> writes:

> [...] So, to sum it up: utrace XOL, which is rather complex already,
> needs even more complexity (which is not yet implemented) than the
> much simpler common-case emulator approach i outlined, just to break
> even with the performance of the much simpler approach. [...]

Is it an uncontroversial claim that emulation of CISC instructions
should perform better than their native execution, followed by an int3
(as in the simplest working scheme) or boosting (as done by kprobes)?
From my experience with simulators, "simple" software emulation of
cpus can be hundreds of times slower or worse than native execution.

- FChE


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