Paul and I have been going back and forth, tweaking this and that, and he
made a major find and fix last week. Page faults from the AC now work.
Further, he fixed the rfork support, such that processes can set up and
move from a TC to an AC. This restores a long-lost capability.
This is a pretty major step forward. It is now even possible to do things
like this:
main(){
/* set it all up */
rfork(RFACORE); /* something like that */
and your process is now running on a dedicated, non-preempted,
interrupt-free, no kernel code, core all to its own.
If somebody has access to a sapphire rapids server running 9front, there
are some tests I'd like to do.
Thanks Paul!
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