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Asterinas: a rust kernel with a linux ABI (asterinas.github.io)

submitted 3 months ago by [email protected] to c/[email protected]

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Linux maintainers are unwilling to get rust into the kernel, so some rust folks decided to start writing a new kernel with same ABI. This allows them to make new architectural decisions. An example being their "frame kernel" (something between a monolithic kernel and a microkernel).

If I may say, it's more legible and the tooling is way better, right off the bat.

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[–] [email protected] 39 points 3 months ago (22 children)

I was interested until the website proudly stated that the kernel is not under the GPL, but the weak copyleft MPL. Great, an alternative to the linux kernel for companies to steal, yay...

[–] mmstick 3 points 3 months ago* (last edited 3 months ago)

In practice, because Rust libraries are always statically-linked, the MPL-2.0 is equivalent to the LGPL in spirit. Meanwhile, because of the static linking restrictions in the LGPL, the LGPL is effectively no different from the GPL. Hence, you're going to find a lot of open source copyleft projects from the Rust ecosystem preferring either GPL or MPL-2.0, where MPL-2.0 is used in libraries where LGPL would have used previously in C projects. Dynamic linking is essentially going the way of the Dodo.

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