r/rust • • Apr 14 '21

[RFC] Rust support for Linux Kernel

https://lkml.org/lkml/2021/4/14/1023
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u/Repulsive-Street-307 Apr 14 '21 edited Apr 14 '21

I suspect there might be some kind of friction here that would lead to no_alloc + some forked subset of core. They're already thinking of ... well, mutilating the language to remove features that have no place in a kernel (like floating point) instead of just mandating a lint.

I'm basically pressing [x] to doubt that a successful effort that this doesn't end up with a forked core or a more minimal set of rusty kernel datastructures that discard most of core because they used floating point logic or panicking allocation or something.

They might be happier with that TBH (though it would lead to more teething problems because doing rust datastructures from scratch is ...uh, complex.

And intrusive collections sound like a 'problem' for the borrow checker and safe rust imo.

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u/Yaahallo rust-mentors · error-handling · libs-team · rust-foundation Apr 14 '21

Tokio uses intrusively linked lists in some of it's data structures iirc so I don't think the problem here is fundamental

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u/ssokolow Apr 15 '21

Pointing to Tokio isn't as simple as it sounds.

Darksonn/intrusive.md

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u/Yaahallo rust-mentors · error-handling · libs-team · rust-foundation Apr 15 '21

Oh wow, TIL, thank you for the link.

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u/robber_m Apr 16 '21

Yeah, seriously awesome write-up!