[fuj]

Isn't this the case for every major OS? I know FreeBSD device drivers can be (un)loaded on-the-fly. Same for MacOS. I assume it's also possible in Linux(?)

[kaladin-jasnah]

It is. I believe you use

  modprobe -r kernel_module_name 

to unload a kernel module and

  modprobe kernel_module_name 

to load it.

[Arnavion]

Linux lets you disable dynamic modules. OpenBSD removed support for them some years ago.

[astrange]

macOS doesn't let you load kexts anymore since it's less important with drivers moving to userspace.