[yazaddaruvala]

lol, are you familiar with ring 0? what about context switching and scheduler preemption? If you are, then you know they add significant overhead to IO bound applications.

> Why the hell would you put something like that in the kernel?

Because some ridiculously large % of all client software is written in/transpiled to JavaScript?

If the JS/WASM runtime would be run with the correct sandboxing (similar to browsers like Chrome), you likely could run the entire application in ring 0 and only context switch because of scheduling preemption. Maybe even ouch the whole browser into the kernel?

All runtime APIs that currently need “syscalls” would become significantly more efficient. You’d end up with an extremely performant system for running browsers and browser like apps (ie Electron).

[kingboss]

I am familiar with ring 0. Familiar enough to understand how stupid it would be to put a browser there. You don't need that many syscalls if you know what you are doing. Obviously, JS guys don't since they argue that many syscalls are needed and it's impacting performance enough that they should move it to ring 0. Jesus H Christ ...