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Re: x86_64 kprobes wart removal


> This email is for x86_64 kprobes wonks.  Remember get_insn_slot() and
> free_insn_slot()?  These functions are a constant headache because they
> can sleep.

I don't understand why this is a problem.  This is only {un,}register_kprobe 
that might block, not anything involved in running a probe.

> - When it comes time to single-step an instruction, just copy the
> instruction from the kprobe object to the executable page.

Possibly an icache nightmare.


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