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For anyone too lazy to follow two links, here's the demo: https://joelseverin.github.io/linux-wasm/
this post was submitted on 01 Nov 2025
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Neat. I had to think about the purpose of running a kernel in a browser, and couldn't find any at first, but if we just see wasm as a browserless container environment, then it makes more sense than running a linux kernel in a browser. I could see a minimal linux spinning up specialized kernels in different wasm containers, much like vm's. Not sure what hardware/software roadblocks exist in a modern wasm container environment tho.
Why not just use docker/k8s then and even be able to control those containers via hypervisor?
Because WASM is a VM in terms of isolation.
Docker is just chroot with marketing (and tooling & ecosystem).
So, the idea of wasm is something that could actually run anywhere, without everything required to prop up a docker/k8s runtime