Tux Machines

Kernel/Linux News and Analysis

Posted by Roy Schestowitz on Apr 25, 2023

Games: HDR and Colour Management, Steam, and More

today's howtos

Linux kernel 6.3 is out now here's some quick highlights

↺ Linux kernel 6.3 is out now here's some quick highlights

> Linus Torvalds announced the full release of Linux kernel 6.3, and with it plenty of the usual improvements everywhere.

Linker notes on AArch32

↺ Linker notes on AArch32

> This article describes target-specific details about AArch32 in ELF linkers. I described AArch64 in a previous article.

The ptrace syscall

↺ The ptrace syscall

> ptrace (“process trace”) is a system call in Unix and Unix-like operating systems that intercepts system calls. It’s a powerful tool that enables tools like debuggers (e.g., gdb), reverse engineering tools, tracing, code injection, and even simple sandboxing. (see proot for an example of a ptrace sandbox). The most interesting part of ptrace is that you can do all of these things completely in user space (even sandboxing!).

Tanenbaum–Torvalds Debates, Part 1

↺ Tanenbaum–Torvalds Debates, Part 1

> Their exchanged messages on Usenet would later be called the “Tanenbaum-Torvalds debates.” While sometimes veering off topic and into “flame war” territory, they touched on issues still relevant today in system design.

> In them, Tanenbaum makes three predictions:

> Microkernels are the future

> x86 will eventually lose to RISC

> Everyone will run a free GNU OS

> Breaking each down, what happened, why it happened, and the important lessons.

QEMU 8.0 hatches more support for Arm and RISC-V

↺ QEMU 8.0 hatches more support for Arm and RISC-V

> Version 8.0, released last week, doesn't alter any fundamentals but does add support for plenty of hardware and instructions.

> Some of the additions are simple, such as the ability to handle Intel's Sapphire Rapids fourth-gen Xeon silicon, or emulate Arm's Cortex-A55 and Cortex-R52 processors.

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