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Re: Hitachi djprobe mechanism
Mathieu Desnoyers <compudj@krystal.dyndns.org> writes:
> [...] And as the jmp instruction is 5 bytes, there seems to be no
> hope to find an atomic operation that will write that.
There are other ways to skin the cat. Remember, the speed of
inserting/removing these probes is not that important. We may be
willing to pay extraordinary conservative synchronization costs like
IPI, cache flushing, and so on, as long as during *execution* time,
the probes are fast.
- FChE