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pessimizer07/31/20251 replyview on HN

"Just think of the power of ring-0, muhahaha! Think of the speed and simplicity of ring-0-only and identity-mapping. It can change tasks in half a microsecond because it doesn't mess with page tables or privilege levels. Inter-process communication is effortless because every task can access every other task's memory.

"It's fun having access to everything."

— Terry A. Davis


Replies

beeflet07/31/2025

> Inter-process communication is effortless because every task can access every other task's memory.

I think this would get messy quick in an OS designed by more than one person