Linux Kernel Module Cheat

End the simulation with a failure exit event:

Sane Python scripts would use that as the exit status of gem5, which would be useful for testing purposes, but fs.py at 200281b08ca21f0d2678e23063f088960d3c0819 just prints an error message:

and exits with status 0.

We then parse that string ourselves in run and exit with the correct status…​

TODO: it used to be like that, but it actually got changed to just print the message. Why? https://gem5-review.googlesource.com/c/public/gem5/+/4880

m5 fail is just a superset of m5 exit, which is just:

as can be seen from the source: https://github.com/gem5/gem5/blob/50a57c0376c02c912a978c4443dd58caebe0f173/src/sim/pseudo_inst.cc#L303