Linux Patches Improve Intel Nested VM Memory Performance Up To ~2353x In Synthetic Test
AWS engineers have been working on Linux kernel improvements to KVM’s VMX code for enhancing the unamanged guest memory when dealing with nested virtual machines. The improved code addresses some correctness issues as well as delivering wild performance improvements within a synthetic benchmark… ⌘ Read more

Glibc Math Code Sees 4x Improvement On AMD Zen By Changing FMA Implementation
Merged this week to the GNU C Library “glibc” code is dropping the ldbl-96 FMA implementation from this library as in doing so they found a 4x improvement to throughput and latency on AMD Zen 3 hardware… ⌘ Read more

RISC-V Testing Lapse Resulted In Wrong MIPS RISC-V Vendor ID Landing In Linux 6.18
An interesting anecdote from this week’s batch of RISC-V fixes for the Linux 6.18 kernel exposed that the MIPS RISC-V/JEDEC vendor ID was wrong for code merged at the start of the kernel cycle. The testing hadn’t caught it either as the QEMU emulation also ended up inadvertently using the wrong vendor ID too… ⌘ Read more

When I try to code something personal over the weekend and lose 2 hours configuring the environment ⌘ Read more

All my newly added test cases failed, that movq thankfully provided in https://git.mills.io/yarnsocial/twtxt.dev/pulls/28#issuecomment-20801 for the draft of the twt hash v2 extension. The first error was easy to see in the diff. The hashes were way too long. You’ve already guessed it, I had cut the hash from the twelfth character towards the end instead of taking the first twelve characters: hash[12:] instead of hash[:12].

After fixing this rookie mistake, the tests still all failed. Hmmm. Did I still cut the wrong twelve characters? :-? I even checked the Go reference implementation in the document itself. But it read basically the same as mine. Strange, what the heck is going on here?

Turns out that my vim replacements to transform the Python code into Go code butchered all the URLs. ;-) The order of operations matters. I first replaced the equals with colons for the subtest struct fields and then wanted to transform the RFC 3339 timestamp strings to time.Date(…) calls. So, I replaced the colons in the time with commas and spaces. Hence, my URLs then also all read https, //example.com/twtxt.txt.

But that was it. All test green. \o/

I just noticed this pattern:

uninformativ.de 201.218.xxx.xxx - - [22/Nov/2025:06:53:27 +0100] "GET /projects/lariza/multipass/xiate/padme/gophcatch HTTP/1.1" 301 0 "" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36"
www.uninformativ.de 103.10.xxx.xxx  - - [22/Nov/2025:06:53:28 +0100] "GET http://uninformativ.de/projects/lariza/multipass/xiate/padme/gophcatch HTTP/1.1" 400 0 "" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36"

Let me add some spaces to make it more clear:

    uninformativ.de 201.218.xxx.xxx - - [22/Nov/2025:06:53:27 +0100] "GET                       /projects/lariza/multipass/xiate/padme/gophcatch HTTP/1.1" 301 0 "" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36"
www.uninformativ.de 103.10.xxx.xxx  - - [22/Nov/2025:06:53:28 +0100] "GET http://uninformativ.de/projects/lariza/multipass/xiate/padme/gophcatch HTTP/1.1" 400 0 "" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36"

Some IP (from Brazil) requests some (non-existing, completely broken) URL from my webserver. But they use the hostname uninformativ.de, so they get redirected to www.uninformativ.de.

In the next step, just a second later, some other IP (from Nepal) issues an HTTP proxy request for the same URL.

Clearly, someone has no idea how HTTP redirects work. And clearly, they’re running their broken code on some kind of botnet all over the world.

Microsoft Open-Sources Classic Text Adventure Zork Trilogy
Microsoft has released the source code for Zork I, II, and III under the MIT License through a collaboration with Team Xbox and Activision that involved submitting pull requests to historical source repositories maintained by digital archivist Jason Scott. Each repository now includes the original source code and accompanying documentation.

The games arrive … ⌘ Read more

Linux 6.19 Slated To Land “mm/cid” Rewrite That Has Very Positive Performance Potential
A set of Linux kernel patches posted back in October for rewriting the kernel’s memory-mapped concurrency ID code for some nice performance wins looks like it will land for Linux 6.19. This is the code that prominent Intel engineer Thomas Gleixner found to yield up to an 18% improvement for the PostgreSQL database. My testing of this “mm/cid” code has also shown some nice performance wins too… ⌘ Read more

Rust-Based Arm GPU Kernel Driver “Tyr” Begins Running GNOME & Basic Games
Initially upstreamed into the Linux 6.18 kernel is Tyr as a Rust-based GPU kernel driver for Arm Mali hardware. This is in effect a Rust alternative to the Panthor DRM kernel driver for newer Arm Mali GPUs with the Command Stream Firmware (CSF). With the latest development code for Tyr, it’s moved onto running the GNOME desktop and basic games like SuperTuxKart… ⌘ Read more

Linus Torvalds Says Vibe Coding is Fine For Getting Started, ‘Horrible Idea’ For Maintenance
Linus Torvalds is “fairly positive” about vibe coding as a way for people to get computers to do things they otherwise could not. The Linux kernel maintainer made the comments during an interview at the Linux Foundation Open Source Summit in Seoul earlier this month. But he cautioned that … ⌘ Read more

I was looking at some ancient code and then thought: Hmm, maybe it would be a good idea to see more details in this error message. Which of the values don’t line up. On the other hand, that feature isn’t probably used anyway, because it’s a bit ugly to use (historically evolved). And on top of that, most teams need something slightly different, if they deal with that sort of thing.

I still told my workmates about it, so they could also have a look at it and we can decide tomorrow what to do about it. Speaking of the devil, no kidding, not even half an hour later, a puzzled tester contacted me. She received exactly that rather useless error message. Looks like I had an afflatus. ;-)

It’s interesting, though, that in all those years, nobody stumbled across this before. At least we now know for sure that this is not dead code. :-)

When a former colleague optimized their code so well no one can maintain it anymore ⌘ Read more

More NVIDIA Nova Enablement For Linux 6.19 With Other Rust Graphics Driver Code
Alice Ryhl of Google sent out the main set of Rust language code changes for the Direct Rendering Manager (DRM) graphics/display driver subsystem ahead of Linux 6.19. Notable is continued DRM core infrastructure work for Rust plus the open-source NVIDIA “Nova” driver continues taking shape albeit isn’t yet ready for end-user usage… ⌘ Read more

When I open the legacy project code I’ll have to maintain ⌘ Read more

Intel Nova Lake Power Management Bits Prepped Ahead Of Linux 6.19
Intel engineers continue working on the Nova Lake next-gen processor enablement for the Linux kernel. In addition to the Intel Xe3P graphics and other early Nova Lake enablement work already queued in “-next” Git branches ahead of the Linux 6.19 merge window, the initial power management code is also ready for this next kernel cycle… ⌘ Read more

Rust in Android: More Memory Safety, Fewer Revisions, Fewer Rollbacks, Shorter Reviews
Android’s security team published a blog post this week about their experience using Rust. Its title? “Move fast and fix things.”

Last year, we wrote about why a memory safety strategy that focuses on vulnerability prevention in new code quickly yields durable and compounding gains. This year we look … ⌘ Read more

Linux 6.19 Landing Initial Display Support For Xe3P_LPD / Nova Lake
The upcoming Linux 6.19 kernel cycle is set to introduce initial Xe3P_LPD GPU support for Nova Lake as well as beginning to build out support for the Crescent Island graphics card. Now joining DRM-Next with that initial Intel Xe3P_LPD code for Linux 6.19 is being able to drive displays with that Xe3 hardware… ⌘ Read more

@movq@www.uninformativ.de I think I now remember having similar problems back then. I’m pretty sure I typically consulted the Qt C++ documentation and only very rarely looked at the Python one. It was easy enough to translate the C++ code to Python.

Yeah, the GIL can be problematic at times. I’m glad it wasn’t an issue for my application.

Latest Proposed Guidelines For Tool-Generated / AI Submissions To The Linux Kernel
Posted to the mailing list on Friday were the latest proposed guidelines for tool-generated contributions to the Linux kernel. The coding tools in large part being focused on AI generated content… ⌘ Read more

NVIDIA Sends Out Initial Turing GPU Support For Open-Source Nova Driver
NVIDIA engineers continue working a lot on the in-development and in-tree open-source Nova kernel driver for their GPUs. Sent out on Friday night were the Turing enablement patches for this Rust-written Nova-Core driver code… ⌘ Read more

For those curious, the new Twtxt <-> ActivityPub bridge I’m building (bidirectional) simply requires three things:

1. You register your Twtxt feed to the bridge: https://bridge.twtxt.net
   
2. You verify that you in fact own/control the feed by putting the verification code somewhere on/in your feed (doesn’t matter where or how)
   
3. You proxy/forward requests for /.well-known/webfinger to the Bridge bridge.twtxt.net.
   

I’m still testing through and ironing out bugs 🐛 Please be patient! 🙏

technically I can put the Bridge verificaiton code in my feed’s metadata so no-one really ever sees or notices it 🤔 Maybe I’ll add a first-class button/field thingy in yarnd so users can “register their feed” straight from their pod? 🤔

Wine 10.19 Released With More Improvements
Ahead of the Wine 11.0 code freeze beginning in early December, Wine 10.19 is out today as the newest bi-weekly development release for running Windows games and applications on Linux… ⌘ Read more

AMD GAIA 0.13 Released With New AI Coding & Docker Agents
AMD’s GAIA open-source project as a reminder is their “Generrative AI Is Awesome” quick-setup solution for demonstrating generative AI use on AMD hardware platforms with Ryzen CPUs, Radeon GPUs, and/or Ryzen AI NPUs. GAIA is predominantly Microsoft Windows focused but recently they did introduce limited support for Linux that is currently bound to Vulkan-accelerated GPU support. Out today is AMD GAIA 0.13 as another step forward for this AI demonstrator… ⌘ Read more

Fedora 44 Looking At Replacing FBCON With KMSCON As Default VT Console
Fedora 44 is looking at replacing the Linux kernel’s console “FBCON” with the user-space-based KMSCON implementation. Eventually the hope remains to deprecate the FBCON/FBDEV code within the Linux kernel… ⌘ Read more

Cagent Comes to Docker Desktop with Built-In IDE Support through ACP
Docker Desktop now includes cagent bundled out of the box. This means developers can start building AI agents without a separate installation step. For those unfamiliar with cagent: it’s Docker’s open-source tool that lets you build AI agents using YAML configuration files instead of writing code. You define the agent’s behavior and tools, and cagent… ⌘ Read more

@lyse@lyse.isobeef.org Yeah, I noticed that too. I haven’t double-checked my code, though. Maybe it has something to do with selecting the correct URL? I mean, these feeds don’t have any # url = fields, so maybe that’s it?

The State Of The Vulkan Renderer For Wayland’s Weston 15.0 Compositor
With the upcoming release of Weston 15.0, this Wayland reference compositor will finally feature a Vulkan renderer. For those curious about its potential, a presentation recently outlined the current state of this Vulkan code path… ⌘ Read more

@bender@twtxt.net Just wrote better code with tests 🤣

At Least Two New Open-Source NPU Accelerator Drivers Expected In 2026
Open-source developer Tomeu Vizoso who developed the open-source and reverse-engineered “Rocket” accel driver for the Rockchip NPU and also worked on the Etnaviv/Vivante NPU support and other related code like Mesa’s Teflon is teasing new NPU drivers coming in the new year… ⌘ Read more

FFmpeg To Google: Fund Us or Stop Sending Bugs
FFmpeg, the open source multimedia framework that powers video processing in Google Chrome, Firefox, YouTube and other major platforms, has called on Google to either fund the project or stop burdening its volunteer maintainers with security vulnerabilities found by the company’s AI tools. The maintainers patched a bug that Google’s AI agent discovered in code for decoding a 1995 vi … ⌘ Read more

My goodness, a new level of stupidity.

The bots are now doing things like this:

GET http://uninformativ.de/projects/lariza/feednotify/datenstrahler/slinp/countty HTTP/1.1

1. That URL does not exist.
   
2. By including http://uninformativ.de in that request, this instructs the webserver to do an HTTP proxy request. Of course, this isn’t allowed on my webserver (and shouldn’t by allowed on any normal webserver), resulting in HTTP 400. And even if it were, the target would be the exact same server, making a proxy request unnecessary.
   

And of course, it’s not just 50 hits like this or 100 or 1’000 or 10’000. No, it’s over 150’000 in the last 2 days. All from vastly different IP ranges of different cloud hosters.

This almost looks like a DDoS attack, but it’s just completely stupid. This feels more like some idiot vibe coded a crawler.

Context engineering can save your company from AI vibe code overload
Comments ⌘ Read more

Tencent Proposes Semantics-Aware vCPU Scheduling For Over-Subscribe KVM Linux VMs
Tecent engineers have been working on addressing long-standing inefficiencies within the Linux kernel scheduler code around over-subscribed virtualized environments… ⌘ Read more

Ask HN: How do you get over the fear of sharing code?
Comments ⌘ Read more

About KeePassXC’s Code Quality Control
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About KeePassXC’s Code Quality Control
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@lyse@lyse.isobeef.org an advent of code, I love it! Go, Lyse, go!

AMD Preps More Graphics Driver Changes For Linux 6.19
AMD continues preparing more kernel driver code for Linux 6.19. This week another round of AMDGPU kernel graphics driver updates were submitted to DRM-Next ahead of the early December merge window… ⌘ Read more

Copy button added to Stack Overflow
Comments ⌘ Read more

‘Vibe Coding’ Named Word of the Year By Collins Dictionary
Collins Dictionary has named “vibe coding” its 2025 word of the year – a term coined by Andrej Karpathy for when a user makes an app or website by describing it to AI rather than writing programming code manually. The term, which is confusingly made up of two words, was “one of 10 words on a shortlist to reflect the mood, language and preoccupations of 2025,” repo … ⌘ Read more

What 986 million code pushes say about the developer workflow in 2025
Nearly a billion commits later, the way we ship code has changed for good. Here’s what the 2025 Octoverse data says about how devs really work now.

The post What 986 million code pushes say about the developer workflow in 2025 appeared first on [The GitHub Blog](https: … ⌘ Read more

Intel’s Rewrite Of Linux MM CID Code Showing Some Nice Gains For AMD
Posted last month were new Linux kernel scheduler-related patches rewriting the MM CID management code. The main takeaway for end-users from this set of 19 Linux kernel patches from an Intel engineer was seeing 14~18% improvement in a PostgreSQL database benchmark but that more benchmarks were needed. Curiosity got the best of me and I recently tested these patches on an AMD EPYC server to seeing some very enticing results for this in-development c … ⌘ Read more

Intel’s Rewrite Of Linux MM CID Code Showing Some Nice Gains For AMD
Posted last month were new Linux kernel scheduler-related patches rewriting the MM CID management code. The main takeaway for end-users from this set of 19 Linux kernel patches from an Intel engineer was seeing 14~18% improvement in a PostgreSQL database benchmark but that more benchmarks were needed. Curiosity got the best of me and I recently tested these patches on an AMD EPYC server to seeing some very enticing results for this in-development c … ⌘ Read more

Code-level telemetry instrumentation: From “oh hell no” to “worth it”
A platform engineer’s guide to developer buy-in Originally published on the author’s personal blog, whitneylee.com As platform engineers, we want the holistic system insights that instrumented code can give us –  yes, please. With code-level insights… ⌘ Read more

Linux To Gain ML-DSA/Dilithium Post-Quantum Cryptography For Module Signing
New code likely to be submitted for the upcoming Linux 6.19 kernel would introduce ML-DSA/Dilithium post-quantum cryptography to be initially used for dealing with kernel module signing… ⌘ Read more

@prologic@twtxt.net Let’s go through it one by one. Here’s a wall of text that took me over 1.5 hours to write.

This section says AI should not be treated as an authority. This is actually just what I said, except the AI phrased/framed it like it was a counter-argument.

The AI also said that users must develop “AI literacy”, again phrasing/framing it like a counter-argument. Well, that is also just what I said. I said you should treat AI output like a random blog and you should verify the sources, yadda yadda. That is “AI literacy”, isn’t it?

My text went one step further, though: I said that when you take this requirement of “AI literacy” into account, you basically end up with a fancy search engine, with extra overhead that costs time. The AI missed/ignored this in its reply.

Okay, so, the AI also said that you should use AI tools just for drafting and brainstorming. Granted, a very rough draft of something will probably be doable. But then you have to diligently verify every little detail of this draft – okay, fine, a draft is a draft, it’s fine if it contains errors. The thing is, though, that you really must do this verification. And I claim that many people will not do it, because AI outputs look sooooo convincing, they don’t feel like a draft that needs editing.

Can you, as an expert, still use an AI draft as a basis/foundation? Yeah, probably. But here’s the kicker: You did not create that draft. You were not involved in the “thought process” behind it. When you, a human being, make a draft, you often think something like: “Okay, I want to draw a picture of a landscape and there’s going to be a little house, but for now, I’ll just put in a rough sketch of the house and add the details later.” You are aware of what you left out. When the AI did the draft, you are not aware of what’s missing – even more so when every AI output already looks like a final product. For me, personally, this makes it much harder and slower to verify such a draft, and I mentioned this in my text.

You, @prologic@twtxt.net, also mentioned this in your car tyre example.

In my text, I gave two analogies: The gym analogy and the Google Translate analogy. Your car tyre example falls in the same category, but Gemini’s calculator example is different (and, again, gaslight-y, see below).

What I meant in my text: A person wants to be a programmer. To me, a programmer is a person who writes code, understands code, maintains code, writes documentation, and so on. In your example, a person who changes a car tyre would be a mechanic. Now, if you use AI to write the code and documentation for you, are you still a programmer? If you have no understanding of said code, are you a programmer? A person who does not know how to change a car tyre, is that still a mechanic?

No, you’re something else. You should not be hired as a programmer or a mechanic.

Yes, that is “skill evolution” – which is pretty much my point! But the AI framed it like a counter-argument. It didn’t understand my text.

(But what if that’s our future? What if all programming will look like that in some years? I claim: It’s not possible. If you don’t know how to program, then you don’t know how to read/understand code written by an AI. You are something else, but you’re not a programmer. It might be valid to be something else – but that wasn’t my point, my point was that you’re not a bloody programmer.)

Gemini’s calculator example is garbage, I think. Crunching numbers and doing mathematics (i.e., “complex problem-solving”) are two different things. Just because you now have a calculator, doesn’t mean it’ll free you up to do mathematical proofs or whatever.

What would have worked is this: Let’s say you’re an accountant and you sum up spendings. Without a calculator, this takes a lot of time and is error prone. But when you have one, you can work faster. But once again, there’s a little gaslight-y detail: A calculator is correct. Yes, it could have “bugs” (hello Intel FDIV), but its design actually properly calculates numbers. AI, on the other hand, does not understand a thing (our current AI, that is), it’s just a statistical model. So, this modified example (“accountant with a calculator”) would actually have to be phrased like this: Suppose there’s an accountant and you give her a magic box that spits out the correct result in, what, I don’t know, 70-90% of the time. The accountant couldn’t rely on this box now, could she? She’d either have to double-check everything or accept possibly wrong results. And that is how I feel like when I work with AI tools.

Gemini has no idea that its calculator example doesn’t make sense. It just spits out some generic “argument” that it picked up on some website.

The AI makes two points here. The first one, I might actually agree with (“bad bot behavior is not the fault of AI itself”).

The second point is, once again, gaslighting, because it is phrased/framed like a counter-argument. It implies that I said something which I didn’t. Like the AI, I said that you would have to adjust the copyright law! At the same time, the AI answer didn’t even question whether it’s okay to break the current law or not. It just said “lol yeah, change the laws”. (I wonder in what way the laws would have to be changed in the AI’s “opinion”, because some of these changes could kill some business opportunities – or the laws would have to have special AI clauses that only benefit the AI techbros. But I digress, that wasn’t part of Gemini’s answer.)

Except for one point, I don’t accept any of Gemini’s “criticism”. It didn’t pick up on lots of details, ignored arguments, and I can just instinctively tell that this thing does not understand anything it wrote (which is correct, it’s just a statistical model).

And it framed everything like a counter-argument, while actually repeating what I said. That’s gaslighting: When Alice says “the sky is blue” and Bob replies with “why do you say the sky is purple?!”

But it sure looks convincing, doesn’t it?

This took so much of my time. I won’t do this again. 😂

When I finally understand an old piece of legacy code ⌘ Read more

Error Codes for Control Flow
Comments ⌘ Read more

Mesa Lands Fixes For HDR With Vulkan Drivers
Merged overnight to Mesa 26.0-devel and likely to be back-ported for the upcoming Mesa 23.3 release are a few fixes around high dynamic range (HDR) support within the common Vulkan windowing system integration (WSI) / display code… ⌘ Read more