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movq
www.uninformativ.de
 (13h ago)
↳ In-reply-to » Advent of Code 2025 starts tomorrow. 🥳🎄

FWIW, day 03 and day 04 where solved on SuSE Linux 6.4:

https://movq.de/v/faaa3c9567/day03.jpg

https://movq.de/v/faaa3c9567/day04%2Dv3.jpg

Performance really is an issue. Anything is fast on a modern machine with modern Python. But that old stuff, oof, it takes a while … 😅

Should have used C or Java. 🤪 Well, maybe I do have to fall back on that for later puzzles. We’ll see.

⤋ Read More
movq
www.uninformativ.de
 (4d ago)

Advent of Code 2025 starts tomorrow. 🥳🎄

This year, I’m going to use Python 1 on SuSE Linux 6.4, writing the code on my trusty old Pentium 133 with its 64 MB of RAM. No idea if that old version of Python will be fast enough for later puzzles. We’ll see.

Image

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movq
www.uninformativ.de
 (4w ago)
↳ In-reply-to » It happened.

@prologic@twtxt.net Nothing, yet. It was sent in written form. There’s probably little point in fighting this, they have made up their minds already (and AI is being rolled up en masse in other departments), but on the other hand, there are – truthfully – very few areas where AI could actually be useful to me.

There are going to be many discussions about this …

This is completely against the “spirit” of this company, btw. We used to say: “It’s the goal that matters. Use whatever tools you think are appropriate.” That’s why I’m allowed to use Linux on my laptop. Maybe they will back down eventually when they realize that trying to push this on people is pointless. Maybe not.

⤋ Read More
lyse
lyse.isobeef.org
 (5w ago)
↳ In-reply-to » @lyse

@movq@www.uninformativ.de Uh, that actually looks not that terrible. Somehow, I remember Swing GUIs being way uglier.

As for Visual Basic, I only had to use VBA once in my life. That was in the beginning of my career when I inherited a project from a leaving coworker. Fuck me, was that awful. Just alone the damn compiler error dialog box popping up in my face all the time while editing and the compiler already trying to parse the unfinished and hence of course uncompilable code. Boy, that left a lasting impression on me. I ported everything to Java very quickly. Luckily, the code base wasn’t all that large at that point in time. I had to add a bunch of new features after that, so I was very glad that I convinced my workmate/project manager to do that first. We didn’t even need a GUI, the button in Excel was transformed to a command line program that just generated the large file.

But I cannot comment on the VB GUI designer, I never used that. Your screenshot looks very similar to the Delphi one, though. Only towards the end of my Delphi days I found out about the possibility to make the widgets snap to window edges and corners (I don’t remember how that was called), so that resizing the windows was actually possible without messing up their entire contents.

Switching to Linux, Delphi wasn’t an option anymore. For some reason I couldn’t use Kylix. Maybe it was already dead by the time I changed OSes. Or I couldn’t get it to run. I just don’t remember. I just recall that the unavailability of Delphi was the reason it took me a while to actually settle on Linux. I then fully switched to Java. The GridBagLayout was my absolutely favorite Swing layout manager. I reckon I used it 98% of the time, because it was so powerful and made the windows resize properly, just as I had learned to do in Delphi shortly before.

Up until discovering Swing, I used Java’s AWT for a short amount of time. That was very limited I think and I hit the limits fairly quickly. Later at uni, we had one project making use of SWT. Didn’t convince me either. I could be wrong, but I think there was also a SWT GUI designer plugin for Eclipse. If there really was, that one wasn’t in the same street as Delphi’s (there must be a reason I forgot about it ;-)).

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movq
www.uninformativ.de
 (5w ago)

And maybe I should go back to using GUI designers. Haven’t used those since the Visual Basic days. 🤔 It wasn’t pretty, but you got results very quickly and efficiently.

(When I switched to Linux, I quickly got stuck with GTK and that only had Glade, which wasn’t super great at the time, so I didn’t start using it … and then I never questioned that decision …)

https://movq.de/v/eaa24b109b/vb.png

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dce
hashnix.club
 (7w ago)

Well, it sure has been a while since I last posted here. Just up late doing yet another Linux installation. Debian turned out to be about as stable as a plutonium Jenga tower, and Alpine refused to boot, so I gave it the boot. Here’s to hoping that Arch fares better. Oddly, I’ve always found Arch to be considerably more stable than other distros…

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lwn-net
feeds.twtxt.net
 (7w ago)

[$] Enhancing FineIBT
At the Linux\
Security Summit Europe (LSS EU), Scott Constable and Sebastian
Österlund gave a talk on an enhancement to a control-flow integrity (CFI)
protection that was added to the kernel several years ago. The “ FineIBT: Fine-grain Control-flow\
Enforcement with Indirect Branch Tracking” mechanism was merged for
Linux 6.2 in early 2023 to harden the kernel against CFI attacks of various
sorts, but needed [ … ⌘ Read more

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lwn-net
feeds.twtxt.net
 (8w ago)

Ubuntu 25.10 released
Ubuntu\
25.10, “Questing Quokka”, has been released. This release includes
Linux 6.17, GNOME 49, GCC 15, Python 3.13.7,
Rust 1.85, and more. This release also features Rust-based
implementations of sudo and coreutils; LWN covered the switch to the
Rust-based tools in March. The 25.10 version of Ubuntu flavors
Edubuntu, Kubuntu, Lubuntu, Ubuntu Budgie, Ubuntu Cinnamon, Ubuntu
Kylin, Ubuntu MATE, Ubun … ⌘ Read more

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lwn-net
feeds.twtxt.net
 (8w ago)

[$] Upcoming Rust language features for kernel development
The
Rust for Linux project has been good for Rust, Tyler Mandry, one of the
co-leads of Rust’s language-design team, said. He
gave a talk at
Kangrejos 2025 covering upcoming Rust language features and thanking
the Rust for Linux developers for helping drive them forward. Afterward, Benno Lossin and Xiangfei Ding
went into more detail about their work on the three most important language
features for kernel development: … ⌘ Read more

⤋ Read More
lwn-net
feeds.twtxt.net
 (8w ago)

Security updates for Wednesday
Security updates have been issued by Fedora (apptainer, civetweb, mod_http2, openssl, pandoc, and pandoc-cli), Oracle (kernel), Red Hat (gstreamer1-plugins-bad-free, iputils, kernel, open-vm-tools, and podman), SUSE (cairo, firefox, ghostscript, gimp, gstreamer-plugins-rs, libxslt, logback, openssl-1_0_0, openssl-1_1, python-xmltodict, and rubygem-puma), and Ubuntu (gst-plugins-base1.0, linux-aws-6.8, linux-aws-fips, linux-azure, linux-azure-nvidia, linux-gke, linux-nvidia-tegra- … ⌘ Read more

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lwn-net
feeds.twtxt.net
 (8w ago)

Security updates for Friday
Security updates have been issued by AlmaLinux (idm:DL1), Debian (gegl and haproxy), Fedora (ffmpeg, firefox, freeipa, python-pip, rust-astral-tokio-tar, sqlite, uv, webkitgtk, and xen), Oracle (idm:DL1, ipa, kernel, perl-JSON-XS, and python3), Red Hat (git), SUSE (curl, frr, jupyter-jupyterlab, and libsuricata8_0_1), and Ubuntu (linux-aws, linux-lts-xenial, linux-aws-fips, linux-fips, linux-gcp-fips, linux-azure, linux-azure, linux-azure-6.8, linux-fips, linux-gcp-fips, and l … ⌘ Read more

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movq
www.uninformativ.de
 (8w ago)

All good things come to an end, I guess.

I have an Epson printer (AcuLaser C1100) and an Epson scanner (Perfection V10), both of which I bought about 20 years ago. The hardware still works perfectly fine.

Until recently, Epson still provided Linux drivers for them. That is pretty cool! I noticed today that they have relaunched their driver website – and now I can’t find any Linux drivers for that hardware anymore. Just doesn’t list it (it does list some drivers for Windows 7, for example).

I mean, okay, we’re talking about 20 years here. That is a very long time, much more than I expected. But if it still works, why not keep using it?

Some years ago, I started archiving these drivers locally, because I anticipated that they might vanish at some point. So I can still use my hardware for now (even if I had to reinstall my PC for some reason). It might get hacky at some point in the future, though.

This once more underlines the importance of FOSS drivers for your hardware. I sadly didn’t pay attention to that 20 years ago.

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lwn-net
feeds.twtxt.net
 (9w ago)

Security updates for Thursday
Security updates have been issued by AlmaLinux (perl-JSON-XS), Debian (chromium and openssl), Fedora (bird, dnsdist, firefox, mapserver, ntpd-rs, python-nh3, rust-ammonia, skopeo, sqlite, thunderbird, and xen), Oracle (perl-JSON-XS), Red Hat (kernel, kernel-rt, and libvpx), SUSE (afterburn, cairo, docker-stable, firefox, nginx, python-Django, snpguest, and warewulf4), and Ubuntu (libmspack, libxslt, linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gkeop, linu … ⌘ Read more

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lwn-net
feeds.twtxt.net
 (9w ago)

Alpine Linux plans /usr merge
The Alpine Linux project has announced
plans to change its base filesystem hierarchy:

In the future, /lib, /bin, and /sbin
will be symbolic links to their /usr counterparts, and every package
shall be installed under the /usr paths. For now,
/usr/bin and /usr/sbin will continue to be independent paths,
but that might change if the Filesystem Hierarchy Standard (FHS) gets
updated.

The merge will take place in the upcomi … ⌘ Read more

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prologic
twtxt.net
 (10w ago)
↳ In-reply-to » @bender Really? 🤔

@zvava@twtxt.net Going to have to hard disagree here I’m sorry. a) no-one reads the raw/plain twtxt.txt files, the only time you do is to debug something, or have a stick beak at the comments which most clients will strip out and ignore and b) I’m sorry you’ve completely lost me! I’m old enough to pre-date before Linux became popular, so I’m not sure what UNIX principles you think are being broken or violated by having a Twt Subject (Subject) whose contents is a cryptographic content-addressable hash of the “thing”™ you’re replying to and forming a chain of other replies (a thread).

I’m sorry, but the simplest thing to do is to make the smallest number of changes to the Spec as possible and all agree on a “Magic Date” for which our clients use the modified function(s).

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cncf
feeds.twtxt.net
 (10w ago)

Local Roots, Global Reach: CNCJ Reflects on KubeCon + CloudNativeCon Japan 2025
Konnichiwa from Tokyo! 🇯🇵 In June 2025, something remarkable happened: the global cloud native community gathered in Tokyo for the first-ever KubeCon + CloudNativeCon Japan, hosted by the Cloud Native Computing Foundation (CNCF) under the Linux… ⌘ Read more

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bender
twtxt.net
 (11w ago)
↳ In-reply-to » Next level poop: Can’t log in to reddit anymore with adblock enabled. It says invalid usename or password.

Hmm, not experiencing that. Using Zen (Firefox), under Linux, with uBlock Origin.

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@marado@ciberlandia.pt
tilde.pt
 (12w ago)

@mozilla@mozilla must have some telemetry or metrics or something to know how many #32bit firefox users are out there. I bet that, as a percentage, they aren’t more than a blip. Still, there has to be several thousand machines out there, running on 32bit hardware, connected to the internet, using #Firefox as its web browser.

And now Mozilla decided to hand those users over to #chromium, by stopping 32-bit support and telling them the alternative is to install a 64bit OS instead.

https://blog.mozilla.org/futurereleases/2025/09/05/firefox-32-bit-linux-support-to-end-in-2026/

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lyse
lyse.isobeef.org
 (12w ago)
↳ In-reply-to » @lyse I'm looking for an OS that runs better than Windows (🤮) and through which I can do basic stuff like read RSS feeds and browse geminispace; but which I can also learn from.

@dce@hashnix.club Apart from the crap produced in Redmond two decades ago, I only ever used and still happily use Linux, mainly Debian and Ubuntu. I’ve no idea, but maybe something in there catches your eye: https://en.wikipedia.org/wiki/List_of_operating_systems (I know, what a silly recommendation.)

⤋ Read More
dce
hashnix.club
 (12w ago)

I have a late-2010s ThinkPad running OpenBSD, but it’s about as fast as a snail carrying heavy shopping through molasses. I’d like to run something other than Linux, for variety, but the other members of the BSD family failed for various reasons. What OS do you guys think I should try?

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movq
www.uninformativ.de
 (14w ago)

I’ve got a prototype of my hardcopy simulator going. I’m typing on the keyboard and the “display” goes to the printer:

https://movq.de/v/56feb53912/s.png

https://movq.de/v/235c1eabac/MVI_8810.MOV.mp4

The biiiiiiiiiig problem is that the print head and plastic cover make it impossible to see what’s currently being printed, because this is not a typewriter. This means: In order to see what I just entered, I have to feed the paper back and forth and back and forth … it’s not ideal.

I got that idea of moving back/forth from Drew DeVault, who – as it turned out – did something similar a few years back. (I tried hard to read as little as possible of his blog post, because figuring things out myself is more fun. But that could mean I missed a great idea here or there.)

But hey, at least this is running on my Pentium 133 on SuSE Linux 6.4, printer connected with a parallel cable. 😍

(Also, yes, you can see the printouts of earlier tests and, yes, I used ed(1) wrong at one point. 🤪 And ls insisted on using colors …)

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@villares@ciberlandia.pt
ciberlandia.pt
 (16w ago)

I’m using #Filen (@filen@filen) for a while now and I’m very pleased with it!

«Affordable zero-knowledge end to end encrypted cloud storage made in Germany.» Works on #Linux, nice well thought features.

So I’m going to share a referral link because «For every friend you invite to Filen you receive 10 GB - and your friend also receives 10B. It’s that easy»:

https://filen.io/r/631ce32074f259f710691e4eec751eb9

⤋ Read More
@villares@ciberlandia.pt
ciberlandia.pt
 (16w ago)

I have been using #Filen (@filen@filen) for a while now and I’m very pleased with it!

«Affordable zero-knowledge end to end encrypted cloud storage made in Germany.» Works on #Linux, nice well thought features.

So I’m going to share a referral link because «For every friend you invite to Filen you receive 10 GB - and your friend also receives 10B. It’s that easy»:

https://filen.io/r/631ce32074f259f710691e4eec751eb9

⤋ Read More
movq
www.uninformativ.de
 (18w ago)

In 1996, they came up with the X11 “SECURITY” extension:

https://www.reddit.com/r/linux/comments/4w548u/what_is_up_with_the_x11_security_extension/

This is what could have (eventually) solved the security issues that we’re currently seeing with X11. Those issues are cited as one of the reasons for switching to Wayland.

That extension never took off. The person on reddit wonders why – I think it’s simple: Containers and sandboxes weren’t a thing in 1996. It hardly mattered if X11 was “insecure”. If you could run an X11 client, you probably already had access to the machine and could just do all kinds of other nasty things.

Today, sandboxing is a thing. Today, this matters.

I’ve heard so many times that “X11 is beyond fixable, it’s hopeless.” I don’t believe that. I believe that these problems are solveable with X11 and some devs have said “yeah, we could have kept working on it”. It’s that people don’t want to do it:

Why not extend the X server?

Because for the first time we have a realistic chance of not having to do that.

https://wayland.freedesktop.org/faq.html

I’m not in a position to judge the devs. Maybe the X.Org code really is so bad that you want to run away, screaming in horror. I don’t know.

But all this was a choice. I don’t buy the argument that we never would have gotten rid of things like core fonts.

All the toolkits and programs had to be ported to Wayland. A huge, still unfinished effort. If that was an acceptable thing to do, then it would have been acceptable to make an “X12” that keeps all the good things about X11, remains compatible where feasible, eliminates the problems, and requires some clients to be adjusted. (You could have still made “X11X12” like “XWayland” for actual legacy programs.)

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movq
www.uninformativ.de
 (19w ago)
↳ In-reply-to » I was drafting support for showing “application icons” in my window manager, i.e. the Firefox icon in the titlebar:

@lyse@lyse.isobeef.org True, at least old versions of KDE had icons:

https://movq.de/v/0e4af6fea1/s.png

GNOME, on the other hand, didn’t, at least to my old screenshots from 2007:

https://www.uninformativ.de/desktop/2007%2D05%2D25%2D%2Dgnome2%2Dlaptop.png

I switched to Linux in 2007 and no window manager I used since then had icons, apparently. Crazy. An icon-less existence for 18 years. (But yeah, everything is keyboard-driven here as well and there are no buttons here, either.)

Anyway, my draft is making progress:

https://movq.de/v/5b7767f245/s.png

I do like this look. 😊

⤋ Read More
movq
www.uninformativ.de
 (19w ago)

Only figured this out yesterday:

pinentry, which is used to safely enter a password on Linux, has several frontends. There’s a GTK one, a Qt one, even an ncurses one, and so on.

GnuPG also uses pinentry. And you can configure your frontend of choice here in gpg-agent.conf.

But what happens when you don’t configure it? What’s the default?

Turns out, pinentry is a shellscript wrapper and it’s not even that long. Here it is in full:

#!/bin/bash

# Run user-defined and site-defined pre-exec hooks.
[[ -r "${XDG_CONFIG_HOME:-$HOME/.config}"/pinentry/preexec ]] && \
        . "${XDG_CONFIG_HOME:-$HOME/.config}"/pinentry/preexec
[[ -r /etc/pinentry/preexec ]] && . /etc/pinentry/preexec

# Guess preferred backend based on environment.
backends=(curses tty)
if [[ -n "$DISPLAY" || -n "$WAYLAND_DISPLAY" ]]; then
        case "$XDG_CURRENT_DESKTOP" in
        KDE|LXQT|LXQt)
                backends=(qt qt5 gnome3 gtk curses tty)
                ;;
        *)
                backends=(gnome3 gtk qt qt5 curses tty)
                ;;
        esac
fi

for backend in "${backends[@]}"
do
        lddout=$(ldd "/usr/bin/pinentry-$backend" 2>/dev/null) || continue
        [[ "$lddout" == *'not found'* ]] && continue
        exec "/usr/bin/pinentry-$backend" "$@"
done

exit 1

Preexec, okay, then some auto-detection to use a toolkit matching your desktop environment …

… and then it invokes ldd? To find out if all the required libraries are installed for the auto-detected frontend?

Oof. I was sitting here wondering why it would use pinentry-gtk on one machine and pinentry-gnome3 on another, when both machines had the exact same configs. Yeah, but different libraries were installed. One machine was missing gcr, which is needed for pinentry-gnome3, so that machine (and that one alone) spawned pinentry-gtk …

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bender
twtxt.net
 (20w ago)

This is it, boys and girls! The year of the Linux Desktop is this! I can smell it! :-D

For the first time, Linux has officially broken the 5% desktop market share barrier in the United States of America! It’s a huge milestone for open-source and our fantastic Linux community.

⤋ Read More
movq
www.uninformativ.de
 (20w ago)

PSA: setpriv on Linux supports Landlock.

If this twt goes through, then restricting the filesystem so that jenny can only write to ~/Mail/twt, ~/www/twtxt.txt, ~/.jenny-cache, and /tmp works.

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@villares@ciberlandia.pt
ciberlandia.pt
 (21w ago)

Impossible Linux things in my to-do list:

  • Fix erratically jumping mouse wheel scrolling on a Dell
  • Make a “SysRq key” work so I can do “REISUB” or something, when my computer freezes

I must have spent days (multiples of 24 hours) trying to solve these things and maybe I should just give up.

I suppose that if I had a “Linux experienced” friend by my side these could be solved in minutes, maybe?

#OldManScreamsAtLinux

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movq
www.uninformativ.de
 (21w ago)
↳ In-reply-to » I bought the “remastered” versions of Grim Fandango and Forsaken on GOG, because they’re super cheap at the moment. Both have native Linux versions.

In all fairness, GOG says that Forsaken is only supported on Ubuntu 16.04 – not current Arch Linux. If you ask me, this just goes to show that Linux is not a good platform for proprietary binary software.

Is it free software, do you have the source code? Then you’re good to go, things can be patched/updated (that can still be a lot of work). But proprietary binary blobs? Very bad idea.

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movq
www.uninformativ.de
 (21w ago)

I bought the “remastered” versions of Grim Fandango and Forsaken on GOG, because they’re super cheap at the moment. Both have native Linux versions.

And both these Linux version crap their pants. 🫤 The bundled SDL2 of Forsaken says it “can’t find a matching GLX visual” and I couldn’t figure out how to fix that. I didn’t spend a lot of time on Grim Fandango.

Both work great in Wine. 🤦

(I do have the original version of Grim Fandango from the 1990ies, but that one does not work so well in Wine. I figured, if it’s so cheap, why not. And I now get to play the english version. 😃 The german dub is pretty damn good, actually, but I always prefer the original these days.)

⤋ Read More
movq
www.uninformativ.de
 (24w ago)

Speaking of Wine, Arch Linux completely fucked up Wine for me with the latest update.

  • 16-bit support is gone.
  • Performance of 3D games is horrible and unplayable.

Arch is shipping a WoW64 build now, which is not yet ready for prime time.

And then I realized that there’s actually only one stable Wine release per year but Arch has been shipping development releases all the time. That’s quite unusual. I’m used to Arch only shipping stable packages … huh.

Hopefully things will improve again. I’m not eager to build Wine from source. I’d rather ditch it and resort to my real Windows XP box for the little (retro)gaming that I do … 🫤

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movq
www.uninformativ.de
 (24w ago)

OpenBSD has the wonderful pledge() and unveil() syscalls:

https://www.youtube.com/watch?v=bXO6nelFt-E

Not only are they super useful (the program itself can drop privileges – like, it can initialize itself, read some files, whatever, and then tell the kernel that it will never do anything like that again; if it does, e.g. by being exploited through a bug, it gets killed by the kernel), but they are also extremely easy to use.

Imagine a server program with a connected socket in file descriptor 0. Before reading any data from the client, the program can do this:

unveil("/var/www/whatever", "r");
unveil(NULL, NULL);
pledge("stdio rpath", NULL);

Done. It’s now limited to reading files from that directory, communicating with the existing socket, stuff like that. But it cannot ever read any other files or exec() into something else.

I can’t wait for the day when we have something like this on Linux. There have been some attempts, but it’s not that easy. And it’s certainly not mainstream, yet.

I need to have a closer look at Linux’s Landlock soon (“soon”), but this is considerably more complicated than pledge()/unveil():

https://landlock.io/

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lwn-net
feeds.twtxt.net
 (25w ago)

[$] Improving iov_iter
The iov_iter interface is used to
describe and iterate through buffers in the kernel. David Howells led a combined storage and
filesystem session at
the 2025 Linux Storage,
Filesystem, Memory Management, and BPF Summit (LSFMM+BPF) to discuss ways
to improve iov_iter. His topic\
proposal listed a few different ideas including replacing some
iov_iter types and possibly allowing mixed types in chains of … ⌘ Read more

⤋ Read More
lwn-net
feeds.twtxt.net
 (25w ago)

[$] An end to uniprocessor configurations
The Linux kernel famously scales from the smallest of systems to massive
servers with thousands of CPUs. It was not always that way, though; the
initial version of the kernel could only manage a single processor. That
limitation was lifted, obviously, but single-processor machines have always
been treated specially in the scheduler. That longstanding situation may
soon come to an end, though, if this patch\
series from Ingo M … ⌘ Read more

⤋ Read More
lwn-net
feeds.twtxt.net
 (25w ago)

Security updates for Tuesday
Security updates have been issued by Debian (python-django), Fedora (krb5), Mageia (cockpit, golang, kernel, and kernel-linus), SUSE (augeas, go1.23, go1.24, iputils, libwebp, transfig, and xen), and Ubuntu (amd64-microcode, apport, linux-azure, linux-azure, linux-azure-4.15, linux-azure-fips, linux-raspi, systemd, and tomcat). ⌘ Read more

⤋ Read More
yue-fang-readfog
feeds.twtxt.net
 (25w ago)

攻克 Linux 內核 Oops：手把手教你從崩潰到破案！
作爲一名長期深耕 Linux 內核開發的博主，在這條探索之路上，我遭遇過無數的挑戰，而 Linux 內核 Oops 問題，絕對是其中讓人最爲頭疼的難題之一。還記得那是一個爲某項目開發定製 Linux 內核模塊的緊張時期，我滿心期待地將新編寫的驅動程序模塊加載到內核中，本以爲一切會順利進行，結果屏幕上突然跳出一大串密密麻麻的 Oops 錯誤信息，系統也陷入了不穩定的狀態。那一刻，我的心瞬間懸了起來， ⌘ Read more

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yue-fang-readfog
feeds.twtxt.net
 (25w ago)

Linux 內核內存管理：核心技術與優化策略
在 Linux 系統中，內存管理堪稱內核的核心功能之一，其運作機制複雜且精妙。Linux 採用虛擬內存技術，爲進程構建獨立的地址空間，借內存管理單元（MMU）將虛擬地址精準映射至物理地址，既保障進程間內存隔離，又防止相互干擾。物理內存管理上，Linux 以分頁機制爲基，將內存切爲固定大小頁（常見 4KB） ，由夥伴系統算法主導分配與回收。通過合併、分割內存頁，夥伴系統有效減少內存碎片，提升內存利用 ⌘ Read more

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lwn-net
feeds.twtxt.net
 (25w ago)

[$] Nyxt: the Emacs-like web browser
Nyxt is an unusual web
browser that tries to answer the question, “what if Emacs was a
good web browser?”. Nyxt is not an Emacs package, but a full
web browser written in Common Lisp and available under the BSD
three-clause license. Its target audience is developers who want a
browser that is keyboard-driven and extensible; Nyxt is also developed
for Linux first, rather than Linux being an afterthought or just a
sliver of its audience. The philosophy (as described … ⌘ Read more

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lobste_rs
feeds.twtxt.net
 (26w ago)

I Learned Rust In 24 Hours To Eat Free Pizza Morally
This is a satirical tech story. For readers who prefer the text version, it’s provided below.

I Learned Rust in 24 Hours to Eat Free Pizza Morally

This is not just a story about pizza. As a recent Phoronix article explains,
the Linux Rust subsystem got into major drama because of my humble quest.

Well, here’s my side of the story, with every kernel of truth exposed.

A Moral Quest for Pizza

Des … ⌘ Read more

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lwn-net
feeds.twtxt.net
 (26w ago)

[$] Zero-copy for FUSE
In a combined storage and filesystem session at the 2025 Linux Storage,
Filesystem, Memory Management, and BPF Summit (LSFMM+BPF), Keith Busch led
a discussion about zero-copy operations for the Filesystem\
in Userspace (FUSE) subsystem. The session was proposed
by his colleague, David Wei, who could not make it to the summit, so Busch
filled in, though he noted that “I do … ⌘ Read more

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lwn-net
feeds.twtxt.net
 (26w ago)

[$] Open source and the Cyber Resilience Act
The European Union’s
Cyber Resilience Act (CRA) has caused a stir in the
software-development world. Thanks to advocacy by the Eclipse Foundation, Open
Source Initiative, Linux Foundation, Mozilla, and others, open-source software
projects generally have minimal requirements under the CRA
— but nothing to do with law is ever quite
so simple. Marta Rybczyńska spoke at Linaro Connect 2025 about the impact of the
CRA on the open-source eco … ⌘ Read more

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lwn-net
feeds.twtxt.net
 (26w ago)

[$] LWN.net Weekly Edition for June 5, 2025
Inside this week’s LWN.net Weekly Edition:

  • Front: OpenH264 in Fedora; Wallabag; Safety certification; 6.16 Merge window; Bounce buffering; Hardening repository problems; Device-initiated I/O; Faster networking; OSPM 2025; Free software in science.

  • Briefs: Kea vulnerabilities; Alpine Linux 3.22.0; Fedora strategy; Quotes; …

  • Announcements: Newsletters, conferences, securi … ⌘ Read more

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lwn-net
feeds.twtxt.net
 (26w ago)

[$] Device-initiated I/O
Peer-to-peer DMA (P2PDMA) has been part of
the kernel since the 4.20 release in 2018;
it provides a framework that allows devices to transfer data between themselves
directly, without using system RAM for the transfer. At the 2025 Linux
Storage, Filesystem, Memory Management, and BPF Summit (LSFMM+BPF), Stephen
Bates led a combined storage, filesystems, and memory-management session on
device-initiated I/O, which is perhaps what P2PDMA is … ⌘ Read more

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