First time in South Korea. Three talks in two days. Over 200 minutes of public speaking. Two packed rooms. Made new connections. (My luggage arrived four days after me. 😅)

This week was very intense, and I’ll never forget this first visit to Seoul. I’m a bit exhausted right now, but really grateful.

Thanks, Korea! 🙏🏼🇰🇷♥️

Abstracts and slides: https://embeddedor.com/blog/2025/11/08/presenting-at-open-source-summit-korea-2025/

Linux Kernel Self-Protection Project 🛡⚔️🐧
#OSSummit #OSSKorea #Linux #OpenSource

As seen in the Seoul Lablup office (https://www.lablup.com/) when visiting the other day right before the OSS Korea conference. Many thanks to them for the good conversations, and food and beer!

@jarkko And for those that don't believe me, it was written about years ago: https://www.linuxfoundation.org/blog/blog/skateboarding-with-greg-kroah-hartman

@jarkko Great idea, now fixed!

I sometimes wish that I'd see more "Skilled Skateboarders" than "Skilled Board Members" at LinkedIn. World would probably be a better place if that would ever happen.

A Halloween Horror Story:

"We're in and we've broken containment - we really are living in a virtual universe"
"That near endless string of symbols is our universe"
"Yes"
"But why one giant string of noise ?"
"Is that a regexp... ?"
"Oh my god, we're living in a perl one liner!"

I'm always hyping perfetto, because it's *really really* cool! Lalit does amazing work and has been super helpful sharing his knowledge on both how to do things in perfetto and even how to add features to the code for things I found missing. So it's great to see his post about his presentation from the Tracing Summit.

One neat thing in the talk is the examples show how perfetto can also ingest and visualize perf and trace-cmd output if those tools for capturing data are more familiar then perfetto's own!

https://lalitm.com/perfetto-swiss-army-knife/

** Speaker announcement ** Our first speaker is @gregkh, Linux kernel developer and Fellow at
 @linuxfoundation.

Info & tickets:
https://2026.rustweek.org

Ahead of our CFP we will be announcing our invited speakers. Also want to speak at RustWeek? Our CFP opens Nov 1st.

#rustlang #rustweek2026

"This makes me 20% more productive!"
"So does cocaine."

@fn @ncopa Ouch, that's slow.

X is where you find the people who think they run the Internet.

Bluesky is where you find the people who think they ought to run the Internet.

Mastodon is where you find the people who actually do run the Internet, and kind of wish they didn't.

(WIth apologies to Yes, Minister)

@multisn8 Oops, yes, it is "GPD", I've now fixed the post, thanks for catching that.

So, this is what you meant, Arch Linux, right?

@sjvn @theregister Nice summary of my talk, thanks for doing that!

Greg Kroah-Hartman explains the Cyber Resilience Act for open source developers https://theregister.com/2025/09/30/cyber_reiliance_act_opinion_column/ via
@theregister & @sjvn

Greg K-H explains what #opensource developers need to know about the CRA, but why they don't need to be worried sick about it.

@ncopa You do NOT want to see the kcbench results for the riscv system I have here, it's so sad it's not even funny. So sad I haven't even powered it on in a few months, it's pretty much useless :(

@kernellogger @jeroen @axboe When using "cloud" machines, many of them have horribly slow storage paths, so yes, it does affect kernel build times on those systems. Now if the "cache" really does anything for that type of storage or not, I do not know, but it can't hurt. Just like running sync 3 times before rebooting :)

It took me two days, off and on, to read this. I consider it a clear-sighted and well-researched analysis of the coming collapse of the mega-scale AI companies, and OpenAI in particular.

https://www.wheresyoured.at/the-case-against-generative-ai/

Ed Zitron's been loud and consistent in his reporting for a long time.

Benchmarking the different machines in my office with the wonderful kcbench: http://www.kroah.com/log/blog/2025/10/01/the-only-benchmark-that-matters-is.../

#kr2025 is already over! A huge thank you…

... to all the speakers who made this edition such a success,

to our godfather @paulmckrcu who did an incredible job putting together and keeping track of the agenda,

to Jean-Christophe for making the livestream possible and running the sound and video so flawlessly,

to @Aissen for the amazing live blog,

to Erwan for his spot-on mic throws,

to Frank for joining us on this third day and adding that little touch of craziness to the conference,