On: On Emacs 28’ context menu and Unix mouse-usage in ...

[int_19h]

Isn't the whole point of a Lisp Machine that it's architecturally optimized for Lisp (rather than C, which is what underpins all of the modern Unix/Linux infrastructure)?

[User23 → int_19h]

That’s my understanding too, which is why I wondered to what extent it’s possible. SBCL produces performant code so I am hopeful an efficient Lisp Machine could be built on x64 hardware.

[int_19h → User23]

But if you build it on x64 hardware, then it wouldn't be a Lisp Machine pretty much by definition, no?

Or do you mean a machine that boots into Lisp, effectively using it as the OS, regardless of hardware?

[User23 → int_19h]

Yeah, that's what I had in mind. With a similar userspace to the old Lisp Machines, but using the vast Linux driver ecosystem.

SBCL already does an acceptable job producing x64 machine code.

[int_19h → User23]

If it can be statically linked, it seems like you should be able to just symlink the SBCL binary to /sbin/init (or use init= boot param).