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Re: Hitachi djprobe mechanism


>   I think Kerninst is similar in effect to djprobe. both of them copy
> original code to a buffer and jump to the buffer.
>   However I think that the most unique feature of djprobe is use of
> "bypass" route to safely insert code on SMP.
>   I cannot find SMP safety mechanism like "bypass" in kerninst papers
> yet.

If by this you mean inserting an int3 while writing the rest of the jmp
instruction and then overwriting the first byte when the rest is in place,
I recall reading about that in some kerninst paper to be sure.


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