this post was submitted on 21 Feb 2025
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cross-posted from: https://lemmy.world/post/25857381

Hellwig is the maintainer of the DMA subsystem. Hellwig previously blocked rust bindings for DMA code, which in part resulted in Hector Martin from stepping down as a kernel maintainer and eventually Asahi Linux as a whole.

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[–] jcg@halubilo.social 11 points 1 day ago (13 children)

Anyone got more context on this I can read through? I haven't kept up with this other than Linus's notorious attitude.

[–] jerakor@startrek.website 13 points 1 day ago (7 children)

It's mostly in that linked thread. The high level of it is a guy wanted to push Rust code. The maintainer said no it would mean the API for this would be tied to Rust and that is unacceptable. It cause another big contributer to throw a fit and Linus said he can't be everyone's mom. They kept fighting for like 2 months apparently? Now Linus stepped in, looked at the code and said the Rust code clearly doesn't impact the API in the way the maintainer was saying it just breaks itself if the maintainers allow changes to the API.

I kinda dislike the idea that it's cool for people to contribute code that is so easy to break. I have a feeling after it happens a few times they are going to claim that it is being done intentionally and that the slap fights will carry on.

[–] jcg@halubilo.social 8 points 1 day ago

Thanks for the summary, I did a bit of reading myself. It's interesting the dynamics at play here - you've got a long, long term contributor in Hellwig who's been a maintainer since before Rust even existed, then you've got quite a few people championing Rust being introduced into the kernel. I feel like Hellwig's concerns must have more to do with the long term sustainability of the Rust code - like will there be enough Rust developers 10, 20, 30 years down the line. I mean, even if it stays maintained, having multiple languages in a codebase increases complexity and makes it harder to contribute. Then you have Filho resigning from the Rust for Linux project, which in itself kind of calls into question the long term sustainability of the project. It seems like Rust would have quite a few benefits for the Linux kernel, but the question remains of if it's still gonna be any good in a few decades. This is juicy stuff!

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