So, what are extension events good for?
They have the desireable feature of signals: you can post one from almost
anywhere in the kernel, and the event gets processed at the safe place just
before returning to user mode (where you hold no kernel locks, can safely
use user_regset, etc.).
But the
Here is a brain dump about utrace extension events. This is an idea I've
had more or less all along. It underpins some of the higher level ideas
I'll post in other brain dumps. So I'll just spew details on the concept,
so that it'll make sense when I talk about other thing
