Phoronix tests Windows 11 25H2 against 24H2, Ubuntu 25.10, and Ubuntu 24.0.3 LTS. But testing shows that 25H2 has no additional optimizations under the hood, matching 24H2 in performance.| Latest from Tom's Hardware
Here’s my rough lab notes from what I learned during weeks 69-73 of streaming where I did my “boot tour” and ported JOS to a variety of boot methods. JOS originally used a custom i386 BIOS bootloader. This is a classic approach for osdev: up to 512 bytes of hand written 16 bit real mode […] The post osdev journal: bootloaders and booting (grub, multiboot, limine, BIOS, EFI) appeared first on offlinemark.| offlinemark
libclang_rt/libgcc are compiler runtime support library implementations, which the compiler occasionally emits calls into instead of directly inlining the codegen. Usually this is for software implementations of math operations (division/mod). Generally you’ll need a runtime support library for all but the most trivial projects. cc-runtime is a utility library for hobby OS developers. It is […]| offlinemark
Why Go is a compelling choice for building CLI tooling| Kartones' Blog
NP-Incompleteness:| www.kuniga.me
PCLSRING is an operating system kernel design technique introduced in ITS for managing interruptions of long-running synchronous system calls. It was mentioned in an infamous diatribe by Dick Gabriel, and is described in loving detail by Allen Bawden in an article for the ages. Discussions of PCLSRING usually center on fundamental questions of systems design. Is the […]| Existential Type
Windows Hello Face is slightly worse off, though savvy users have found a workaround| Tom's Hardware
NP-Incompleteness:| www.kuniga.me
Use Windows without losing out on Linux| Pi My Life Up
The CSUN ATC conference is one of the largest accessibility related conferences in the world. (It stands for “California State University in Northridge”, the conference name is actually “Assistive Technology Conference”.)| AlastairC
In an article in the February, 2025 issue of Communications of the ACM, I join 20 coauthors from across academia and industry in writing about the remarkable opportunity for universal strong memory safety in low-level Trusted Computing Bases (TCBs) enabled by recent advances in type- and memory-safe systems programming languages (e.g., the Rust language), hardware memory protection (e.g., our work on CHERI), formal methods, and software compartmentalisation. These technologies are seeing incr...| Light Blue Touchpaper
This is a second part to my Optimizing Windows 11 for Gaming small guide. Windows comes with +100 services, and while I must say that things have improved from the past, and many have manual activation and/or "delayed start", there are still a few that either activate by default …| Kartones Blog
Updates: 2025-01-11: Added link to second part, covering disabling services. 2025-01-09: Clarified issues if fully removing the GameBar and instructions to reinstall it. 2025-01-06: Added O&O ShutUp and O&O AppBuster apps, and Settings app links to most options. Kudos to Lobo666 for the suggestions! My gaming PC was …| Kartones Blog
Registry repair tools are tools that clean and reorganize the files in your PC’s registry which are an essential part of the overall running processes of your PC’s operating system. During normal computer usage, the registry files become damaged and corrupt which causes your PC’s performance to slow down. Types of Tasks That Registry Repair […]| spamlaws.com
You can easily check Linux version installed on your target device by running one of the commands mentioned in this article. We cover six ways and commands.| RedSwitches
Google says it is "infusing AI into everything," including Pixel devices and Android. We got a look at the latest Gemini AI features on the Pixel 9 and have some early favorites to share.| PCMag UK
Contents Repository Introduction The APLIC Conclusion Repository This blog series refers to the code written here: https://github.com/sgmarz/riscv_msi. The APLIC specification (still in draft) is part of the Advanced Interrupt Architecture (AIA) specification, and it is kept here: https://github.com/riscv/riscv-aia. I am using AIA specification version 0.3.0-draft.31 to write this article. Introduction The advanced platform level interrupt […]| Stephen Marz
Contents Overview Repository Message Signaled Interrupts (MSI) Incoming MSI Controller (IMSIC) Conclusion What’s Next Overview Message signaled interrupts or MSIs describe a way to signal an interrupt without a dedicated interrupt request pin (IRQ). One of the most prevalent uses for MSIs is the PCI bus, and the PCI specification defines the MSI and MSI-X […]| Stephen Marz
This post is part of a larger effort you can view over here: https://osblog.stephenmarz.com. Video Contents Overview Application Programmer’s Interface (API) Starting Routines System Calls Drawing Primitives Event Handling Start Our Game Game Loop PLAY Overview We last left off writing a graphics driver and an event driver for our operating system. We also added […]| Stephen Marz
This post is part of a longer OS tutorial which can be found here: https://osblog.stephenmarz.com Contents Introduction What is SATP? What is SFENCE.VMA? What is happening? The Translation Lookaside Buffer Conclusion References Introduction My last post garnered some attention by those telling me that I “forgot” to execute an SFENCE.VMA after I wrote to the […]| Stephen Marz
This is a continuation of an ongoing theme which is started here: https://osblog.stephenmarz.com. Contents What is Supervisor Mode? Why Supervisor Mode? Complications while in Supervisor Mode Complications with Interrupts Conclusion What is Supervisor Mode? My original OS Blog (see here: https://osblog.stephenmarz.com) ran the operating system in RISC-V’s machine mode, which is the most privileged mode […]| Stephen Marz
An operating system is used to make our job easier when using graphics. In our instance, in addition to everything else. In this post, we will be writing a GPU (graphics processing unit) driver using the VirtIO specification. In here, we will allow user applications to have a portion of the screen as RAM--with what is commonly known as a framebuffer.| Stephen Marz
Input devices give our operating system the ability to accept mouse and keyboard inputs from the graphical user interface (GUI). We originally used the UART (universal asynchronous receiver/transmitter) for console I/O, but we're high class now--we have a GUI! So, we will use the virtio protocol to communicate with a mouse and keyboard.| Stephen Marz
I’m going to shake it up here and do something totally crazy. I’m going to talk about operating systems for a moment. OSD is absolutely something in my wheel-house and I certainly have …| Dam Good Admin
System call table is an array of function pointers. It is defined in kernel space as variable sys_call_table and it contains pointers to functions which implement system calls. Index of each functi…| Binary Debt
Kernel symbols are names of functions and variables. Global symbols are those which are available outside the file they are declared in. Global symbols in the Linux kernel currently running on a sy…| Binary Debt
In this post, we will explore a small quirk of MacOS. The title should be self-explanatory but might not be so obvious to heavy GUI users. Let’s take a closer look into this seemingly-feature-not-b…| Amikelive | Technology Blog
Acropalypse is a vulnerability first identified in the Google Pixel phone screenshot tool, where after cropping an image, the original would be recoverable. Since the part of the image cropped out might contain sensitive information, this was a serious security issue. The problem occurred because th| Bentham’s Gaze
