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Mixing Rust and C in Linux likened to cancer by maintainer (www.theregister.com)

submitted 1 day ago by cm0002 to c/[email protected]

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[–] [email protected] 16 points 19 hours ago (1 children)

What they are asking is not to change the c code to suit rust, but to leave the C code as is, and have a single Rust-written wrapper that links into the C DMA code so that other Rust drivers can link into the wrapper. Additionally, said wrapper is not to be maintained by Hellwig, but by the maintainers of the drivers that will use the wrapper, so without overhead for Hellwig.

He is not asking to not make his work harder, he's explicitly asking to make it harder for rust drivers to use DMA.

[–] Cypher -2 points 16 hours ago* (last edited 16 hours ago) (1 children)

So you think Hellwig doesn’t understand what is and isn’t intended to go into the kernel/dma that dma maintainers would then be responsible for?

You don’t seem to be familiar with either the full conversation the developers had (its all available) or you don’t understand how the Linux project is structured and maintained.

From the email chain:

On Thu, Jan 16, 2025 at 02:17:24PM +0100, Danilo Krummrich wrote:

Since there hasn't been a reply so far, I assume that we're good with maintaining the DMA Rust abstractions separately.

No, I'm not. This was an explicit:

Nacked-by: Christoph Hellwig

And I also do not want another maintainer. If you want to make Linux impossible to maintain due to a cross-language codebase do that in your driver so that you have to do it instead of spreading this cancer to core subsystems. (where this cancer explicitly is a cross-languagecodebase and not rust itself, just to escape the flameware brigade).

[–] [email protected] 1 points 13 hours ago (1 children)

Martin's already in the list of maintainers for another subsystem; this is a territorial play by Hellwig. Any kernel developer would recognize this; you don't seem especially familiar with kernel social dynamics either! Also please fix your formatting if you're going to copy-and-paste rather than linking.

[–] Cypher 1 points 8 hours ago

Martin is not a maintainer of the Kernel/DMA which is why Hellwig clearly states he doesn’t want to add another maintainer when rejecting Martin’s offer to be a maintainer of this proposed code.

This is very clear if you read the email. If you don’t like the formatting go read the full email chain yourself, you will know where to find it if you’re so familiar with ‘kernel social dynamics’.