Hacker News with Generative AI: Kernel Development

Running NetBSD 10.1 on a 1998 Toshiba laptop (idatum.net)
Here are my notes on running NetBSD 10.1 on my first personal laptop that I still keep, a 1998 i586 Toshiba Satellite Pro with 81Mb of RAM and a 1Gb IBM 2.5" IDE HD. In summary, the latest NetBSD runs well on this old hardware using an IDE to CF adapter and several changes to the i386 GENERIC kernel.

Operating Systems, Retro Computing, Hardware, Kernel Development

20 points by idatum 22 days ago | 1 comments

Coccinelle (kernel.org)
Coccinelle is a tool for pattern matching and text transformation that has many uses in kernel development, including the application of complex, tree-wide patches and detection of problematic programming patterns.

Kernel Development, Programming Tools, Software, Open Source

24 points by josephcsible 23 days ago | 4 comments

Linux 6.13 will report the number of hung tasks since boot (phoronix.com)
Linux 6.13 Will Report The Number Of Hung Tasks Since Boot

Linux, Operating Systems, Kernel Development

128 points by LinuxBender 55 days ago | 32 comments

The Case for a High-Level Kernel-Bypass I/O Abstraction (2019) (irenezhang.net)
After chatting with people at HotOS, I was inspired to write this blog post summarizing my HotOS paper. At a high-level, the HotOS paper advocates for a new high-level I/O abstraction for kernel-bypass.

Operating Systems, Kernel Development, I/O Abstraction

61 points by eventhelix 57 days ago | 36 comments

Bounded Flexible Arrays in C (kernel.org)
Large projects written in C, especially those written close to the hardware layer like Linux, have long treated the language as a high-level assembler.

C, Programming Languages, Operating Systems, Kernel Development, Memory Management

12 points by fanf2 79 days ago | 0 comments

Fitting a Forth in 512 bytes (2021) (compilercrim.es)
Software is full of circular dependencies if you look deep enough. Compilers written in the language they compile are the most obvious example, but not the only one. To compile a kernel, you need a running kernel. Linkers, build systems, shells. Even text editors, if you want to write the code instead of just downloading it.

Programming Languages, Software, Compilers, Kernel Development

92 points by whereistimbo 84 days ago | 22 comments

Rust in enterprise kernels (lwn.net)
At the recently concluded Maintainers Summit, it was generally agreed that the Rust experiment would continue, and that the path was clear for more Rust code to enter the kernel.

Rust, Operating Systems, Kernel Development

62 points by bookstore-romeo 86 days ago | 10 comments

FFI type mismatches in Rust for Linux (lwn.net)
At Kangrejos, Gary Guo wanted to discuss three problems with the way Rust and C code in the kernel interact: mismatched types, too many type casts, and the overhead of helper functions.

Rust, Linux, Programming Languages, Kernel Development

6 points by todsacerdoti 98 days ago | 0 comments

Linus Torvalds is fed up with bcachefs (kernel.org)
Several more filesystems repaired, thank you to the users who have been providing testing. The snapshots + unlinked fixes on top of this are posted here:

Linux, Kernel Development, File Systems

37 points by ramon156 103 days ago | 10 comments

What's new with io_uring in 6.11 and 6.12 (github.com/axboe)
What's new with io_uring in 6.11 and 6.12

Operating Systems, Linux, Kernel Development, Networking

21 points by mfiguiere 106 days ago | 6 comments

Booting into Rust and deadlocking right away – a gnarly bug in my hobby kernel (jannestimm.com)
After adding the few lines of code to parse the fdt and obtain amount of cores and memory, I reran the kernel and observed my kmain function getting stuck right at the point of locking the global KMEM (line 22), the physical page allocator (which needs to know the amount of memory to initialize the datastructure that records all the free pages).

Operating Systems, Rust, Programming, Kernel Development, Debugging

6 points by jannesan 109 days ago | 0 comments

Linux 6.12 Features Super Real-Time, Sched_ext, Intel Xe2 and Pi 5 (phoronix.com)
The Linux 6.12 merge window is wrapping up today with the release of Linux 6.12-rc1 in the coming hours. This is going to be a heck of an exciting kernel. There's real-time PREEMPT_RT finally in mainline, the much anticipated sched_ext code also was merged, QR codes for DRM panic messages, initial out-of-the-box support for Intel Xe2 graphics with Lunar Lake and Battlemage, initial Raspberry Pi 5 support, and a ton of other hardware support additions and new innovative kernel software features.

Linux, Kernel Development, Hardware, Graphics, Raspberry Pi

92 points by rbanffy 110 days ago | 39 comments

CrowdStrike's Blue Screen blunder: Could eBPF have saved the day? (theregister.com)
"Interview The CrowdStrike chaos was caused by software running riot in the Windows kernel after an update tripped up the code. eBPF is a useful tool for kernel tracing and observability, but could it have mitigated the CrowdStrike incident?"

Cybersecurity, Software Bugs, Operating Systems, Kernel Development

4 points by LinuxBender 113 days ago | 0 comments

Committing to Rust in the Kernel (lwn.net)
The project to enable the writing of kernel code in Rust has been underway for several years, and each kernel release includes more Rust code.

Programming Languages, Operating Systems, Kernel Development

208 points by todsacerdoti 115 days ago | 170 comments

Linux Close to Enabling Real-Time "Preempt_rt" Support (phoronix.com)
We're very close to the finish line for the mainline Linux kernel being able to enable real-time "PREEMPT_RT" kernel support.

Linux, Kernel Development

6 points by l0b0 130 days ago | 1 comments

Retiring from the Rust for Linux Project – Wedson Almeida Filho (kernel.org)

Rust, Linux, Open Source, Kernel Development, Software

86 points by todsacerdoti 142 days ago | 98 comments

Offload-friendly network encryption in the kernel (lwn.net)

Network Security, Kernel Development, Linux

5 points by signa11 183 days ago | 0 comments

Create Unified Kernel Image from Scratch (izissise.net)

Kernel Development, Linux, Operating Systems

19 points by todsacerdoti 187 days ago | 1 comments

Fiwix: Unix-like kernel for the i386 architecture (github.com/mikaku)