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Linux Kernel's Preliminary Rust Code Seeing 64-bit POWER Support

Submitted by Roy Schestowitz on Wednesday 24th of March 2021 12:23:50 AM Filed under
Development
Linux
  • Linux Kernel's Preliminary Rust Code Seeing 64-bit POWER Support

    Excitement is building around initial support for the Rust language within the Linux kernel that arrived in Linux-Next and is now seeing more developer interest.

    This very preliminary infrastructure work around supporting Rust code within the Linux kernel and an example module in tow continues to mature within Linux-Next while awaiting to see if it will try to be mainlined in a few weeks for the 5.13 cycle. Now that activity is happening, more upstream kernel developers are taking note.

  • Linus Torvalds on where Rust will fit into Linux

    This isn't just a theory being pushed by Rust enthusiasts. A great deal of Rust in Linux is already being pushed out into the market. Amazon Web Services (AWS) recently released Bottlerocket Linux for containers and it has a great deal of Rust in it.

    Sylvestre Ledru, a Mozilla director by day and Debian Linux developer by night, has ported a Rust version of Coreutils to Linux using the LLVM compiler infrastructure and its Clang C language front-end and tooling infrastructure. Coreutils are the GNU shell core utilities. With these, Ledru has booted Linux and run the most popular Debian packages. This isn't, Ledru admits, production-ready yet, but with a lot of elbow grease, it works today. Eventually, it may replace GNU Coreutils.

    Why do any of this in the first place? Rust is popular because it lends itself more easily to writing secure software. Samartha Chandrashekar, an AWS Product Manager, said it "helps ensure thread safety and prevent memory-related errors, such as buffer overflows that can lead to security vulnerabilities." Many other developers agree with Chandrashekar.

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Now by JIM SALTER (Ars)

Submitted by Roy Schestowitz on Friday 26th of March 2021 01:33:28 AM.
  • Linus Torvalds weighs in on Rust language in the Linux kernel

    As of now, the Linux kernel is written in the C programming language—essentially, the same language used to write kernels for Unix and Unix-like operating systems since the 1970s. The great thing about C is that it's not assembly language—it's considerably easier to read and write, and it's generally much closer to directly portable between hardware architectures. However, C still opens you up to nearly the entire range of catastrophic errors possible in assembly.

    In particular, as a nonmemory-managed language, C opens the programmer up to memory leaks and buffer overflows. When you're done with a variable you've created, you must explicitly destroy it—otherwise, old orphaned variables accumulate until the system crashes. Similarly, you must allocate memory to store data in—and if your attempt to put too much data into too-small an area of RAM, you'll end up overwriting locations you shouldn't.

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