MPU != MMU. MMU simply provides (~8) variably sized windows with RWX-type permissions. ....and indeed, this is the real protection here. Malicious code or bad

MPU != MMU. MMU simply provides (~8) variably sized windows with RWX-type permissions. ....and indeed, this is the real protection here. Malicious code or badly-behaved code does not care that you've written the kernel in Rust, its simply a bunch-of-opcodes. The Rust stuff is nice... but meh for security/robustness.