[mort96]

JVM bytecode is, to my understanding, basically just a serialized, desugared Java. It has a concept of classes with constructors and it has objects and references and inheritance and basically all of Java's semantics encoded in it. Languages which aren't "java-like" have a hard time compiling to it. WASM, on the other hand, is more like machine code, so languages which are used to compiling to machine code have a fairly easy time compiling to it.

[klabb3]

Indeed, not to mention the GC, which isn't one size fits all (not even within Java itself).

And wasm could run in ring 0 if you want, the runtime is that hardened.

[miohtama]

You can “already” run Wasm modules in kernel to speed up things

https://github.com/wasmerio/kernel-wasm