Robert O'Callahan

`src/counters-test/counters.c` tests the perf counters and CPU architecture. It's a standalone C program that you can compile with a trivial command.

It probably needs updating with the latest CPU architecture updates.

FWIW I wrote `src/counters-test/counters.c` so that people working on hypervisors etc could have some simple standalone test code suitable for CI.

CRIU does a lot of weird stuff. It's probably possible to get it working under rr but it would be some work. Using CRIU to checkpoint rr would require fixing...

I guess one important question is what you actually want to do with CRIU+rr.

Yeah. You could probably change rr to search more more memory regions for a usable syscall instruction.

I'd really want to debug this on the hardware somehow.

Let's do that, but I'm out of the office the coming week. I'll get back to you.

I get these. I don't think it's worth patching brotli to get rid of them.

There should be