Weekend tinkering: finally made enough room for a microscope on my bench and looked at small things. The chip of interest is 0.7mm wide: a ~60 GHz amplifier.

#hamradio #amateurradio #electronics #rf #mmic #microwave #millimeterwave #mmwave

📢 🐧 The CfP for Linux Security Summit North America (LSS-NA) 2025 is now open!

LSS-NA will be co-located with the Open Source Summit in Denver, Colorado, USA.

🖥 https://events.linuxfoundation.org/linux-security-summit-north-america/

CfP close: March 10, 2025
Speaker notification: March 31, 2025
Event: June 26-27, 2025

#linux #linuxsecuritysummit #linuxfoundation #opensource #security

"We’re writing to inform you that we intend to discontinue sending expiration notification emails. " https://letsencrypt.org/2025/01/22/ending-expiration-emails/

Understandable, but I'm guessing this will cause a lot of breakage for a while & train people to click through browser security warnings. Thoughts?

From an ebay listing. It's real.

Given the increasingly toxic environment in the US and elsewhere, I'd like to express my support for all transgender & intersex people. Sorry you're dealing with this.

A quick summary of the LSM, SELinux, and audit changes merged during the first part of the Linux v6.14 merge window.

https://paul-moore.com/blog/d/2025/01/linux_v614_merge_window.html

#lsm #selinux #audit

I'd like to announce two new libseccomp releases today: libseccomp v2.5.6 which is a minor maintenance release to the v2.5.z release stream, and libseccomp v2.6.0 which is a new feature release for libseccomp. More details in the link below, but libseccomp v2.6.0 adds support for new architectures, transactional filter updates, and more. Give it a try, you'll like it :)

https://github.com/seccomp/libseccomp/releases/tag/v2.6.0

#seccomp

@LaF0rge all this will be important for rebuilding society after the next war

RE: https://chaos.social/@LaF0rge/113856213231658972

Who says that pair programming can't be productive?

#pairprogramming #dogsofmastodon

A giant Soviet telescope looks like a remnant of an older and more advanced civilization.

Its history matches this impression. The Kalyazin RT-64 radio telescope was developed to support communications with robotic missions to Venus and Mars and to prepare for possible manned expeditions to these planets.

The telescope is located near the city of Kalyazin, and still in operation today. Its scientific tasks include deep space communications and astrophysical research.

For the 2 weeks over Christmas + New Year, my work days were meeting-free. I got a lot of stuff done as a result. It was very freeing.

When I returned to a normal schedule this week, a sense of dread accompanied it. I considered why. It was meetings. Specifically, weekly obligatory pro forma have-em-because-they-are-on-the-calendar meetings. No-agenda meetings. The kind often organized by physics collaborations.

My resolutions for 2025: no agenda, no attenda. Only meetings with purpose.

Lots of recent picolibc news:

* Oliver Stannard at ARM got testing running on the FVP emulator for more rigorous AARCH64 validation.

* Eduard Tanase fixed a bunch of documentation issues.

* Joel Holdsworth added OpenRisc support.

* Jiaxun Yang fixed my janky tools situation by creating picolibc-ci-tools which auto-builds all of the extra bits we need for CI. They also add LoongArch and LatticeMico32 support. The latter uncovered GCC bugs which I had fun fixing.

Thanks to all of you!

📣 All Systems Go! 2025 will take place Sept 30th-Oct 1st. We are excited to move back to the venue we held the event at for the first 3 years, Alte-Münze in the heart of Berlin along the river Spree.
The 🗣️ CFP opens and 🎟️ ticket sales start in mid-March.
🎗️ If your organization wants to sponsor, please reach out.

Dumb legal question: if people generally do not read terms of service type documents, how are they valid as a legal vehicle?

A bit of a retrospective on #Incus in 2024 and what to look forward to in 2025!
https://stgraber.org/2025/01/04/incus-in-2024-and-beyond/

util-linux has merged support for statmount() and listmount() to list mounts:
https://github.com/util-linux/util-linux/pull/3092#event-15865684400

This should be a nice performance improvement.

See https://brauner.io/2024/12/16/list-all-mounts.html for some details on listmount() and statmount().

#linux #kernel

Peeking at the recent CCC video list:

https://media.ccc.de/b/congress/2024

"BlinkenCity" - uh oh.

@petrillic Yikes, that seems to be very simple. Video: https://media.ccc.de/v/38c3-hacking-the-rp2350

RE: https://hachyderm.io/@petrillic/113805844834383637

Here's a brief blog on my amateur radio publications last year: https://w7txt.net/2024/12/29/publications-in-2024/

- Investigating the Extended Frequency Range of the WA1MBA Millimeter Wave Quadrupler.

- Open Source Arduino Controller for Surplus Flatpack2 PSU.

#hamradio
#amateurradio
#microwave
#eme
#moonbounce
#electronics

I've written a post that shows how to list all mounts in all mount namespaces (all mounts on the system) using new apis we added to the #vfs last year.

https://brauner.io/2024/12/16/list-all-mounts.html

#kernel #linux #vfs