spectre-meltdown-checker VS mg

I tried the latest SMC from https://github.com/speed47/spectre-meltdown-checker and all were in green. :-)

How is this project different spectre-meltdown-checker?

OpenBSD will disable all but the first thread on any Intel processor by default. I'm assuming that these models are too old to have microcode updates addressing the Spectre exploits (Meltdown, Foreshadow, Fallout, Zombieload, RIDL etc.), and disabling SMT/HT might be the most secure thing to do by default.

This script produces a good assessment of Spectre problems for a wide variety of CPUs. I know that they are difficult to exploit, and the mitigations are disabled by many because of their performance impact.

https://github.com/speed47/spectre-meltdown-checker

You can confirm the status of the mitigations using InSpectre for Windows, or Spectre & Meltdown Checker if you're on a unix based system.

You can run https://github.com/speed47/spectre-meltdown-checker

He's probably referring to the class of vulnerabilities checked by this script: https://github.com/speed47/spectre-meltdown-checker. It's not just Intel CPUs that were affected, AMD and ARM also have some vulnerabilities (I just ran it on an ARM v7 to see) although maybe not as many.

utilise microcode updates (should be by default, check)

If you need quick in and out with emacs feel, consider mg.

EDIT: to partially answer my own question. I see that starting with macOS 10.15 (Catalina), Gnu Emacs was replaced with mg. Catalina was released in October 2019. I don't know anything about Mg but it seems like a neat project.

mg (MicroGNUEmacs) despite the name is not affiliated with GNU and is a fork of MicroEmacs which is a clone of GNU Emacs. Basically it’s a lightweight, portable, emacs-style editor maintained by OpenBSD with a public domain license. https://github.com/troglobit/mg/

If you want a suckless version of emacs, look at mg