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A relatively new professional kernel hacker, born in August 6, 2000, and living in Korea (South!).

- Linux Kernel Developer @ Oracle (Linux Kernel MM) (2025.02 ~ Present)
- Reviewer for the Linux Slab & Reverse Mapping subsystem
- Former Intern @ NVIDIA, SK Hynix, Panmnesia (Security, MM and CXL)
- B.Sc. in Computer Science & Engineering, Chungnam National University (Class of 2025)

Opinions are my own.

My interests are:
Memory Management,
Computer Architecture,
Circuit Design,
Virtualization

Apple M3 Progress On Linux: Asahi Can Boot To KDE Desktop - But No GPU Acceleration Yet

While the Asahi Linux project has made good progress on bringing Linux to Apple Silicon hardware, much of the success and in turn upstreaming to the Linux kernel has been around the aging M1 and M2 Macs. Apple M3 and newer has been a struggle but progress is being made. One of the Asahi Linux developers shared the ability now to boot to the KDE Plasma desktop with the experimental As…
https://www.phoronix.com/news/Apple-M3-Linux-Boot-To-KDE

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K. Ryabitsev-Prime 🍁

TLDR: use korgalore to bypass mailing list delivery problems

If you're a Gmail or Outlook user and you're subscribed to high-volume mailing lists, you're probably routinely missing mail. Korgalore is a tool that monitors mailing lists via lore.kernel.org and can import mail directly into your inbox so you don't miss any of it. You can also couple korgalore with lei for powerful filtering features that can reduce the firehose to what you'd actually find useful.

https://people.kernel.org/monsieuricon/tracking-kernel-development-with-korgalore
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Vlastimil Babka πŸ‡¨πŸ‡ΏπŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦

Edited 7 days ago

Once again there's a kernel developer position open in the SUSE Labs Kernel Core team I'm part of! https://suse.wd3.myworkdayjobs.com/en-US/Jobsatsuse/job/Czech-Republic-EMEA/Linux-Kernel-Generalist_71007379

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Harry (Hyeonggon) Yoo

Can't believe I'm getting older tomorrow again...oh, no. I'm not.
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Vlastimil Babka πŸ‡¨πŸ‡ΏπŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦

Oh hail the Ukrainian xmas sheaves!

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Vlastimil Babka πŸ‡¨πŸ‡ΏπŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦

With the current RAM prices, let me remind you of my solution from 2017 that unfortunately wasn't merged, but maybe it's time to revisit it? https://lore.kernel.org/all/20170401211813.15146-1-vbabka@suse.cz/

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Linux 6.19 Goes Ahead And Enables Microsoft C Extensions Support

Last month I reported on Linux 6.19 looking to enable Microsoft C Extensions support throughout the Linux kernel with setting the -fms-extensions compiler option to allow Microsoft C Extensions when building the kernel. Linus Torvalds today merged that support without objections...
https://www.phoronix.com/news/Linux-6.19-Enables-MS-Ext

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Harry (Hyeonggon) Yoo

Edited 2 months ago
vibe-coded script for GCOV coverage visualization!
Hope this is helpful when I'm testing something or reviewing complicated code
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New TLDs just dropped:

🌐 .com: community (discussion board)
🌐 .org: oranges, or the color orange, or both
🌐 .net: everything about nets EXCEPT computer networks
🌐 .gov: Grand ObserVatory. Astronomy-related
🌐 .mil: Moms in Love. Lesbian-friendly place
🌐 .int: Integers. Everything about one number, for example: 25.int
🌐 .edu: Ethylene diurea (an organic compund)

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Vlastimil Babka πŸ‡¨πŸ‡ΏπŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦

RE: https://mastodon.social/@workchronicles/115534588198704665

This is how I present the lkp perf improvement reports for my patches, yeah.

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Vlastimil Babka πŸ‡¨πŸ‡ΏπŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦

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Vlastimil Babka πŸ‡¨πŸ‡ΏπŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦

On Thursday, I sent this RFC: https://lore.kernel.org/lkml/20251023-sheaves-for-all-v1-0-6ffa2c9941c0@suse.cz/
On Friday, there was the expected phoronix coverage. But also an unexpected one:
https://www.nytimes.com/2025/10/24/learning/word-of-the-day-sheaf.html

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Harry (Hyeonggon) Yoo

took another cringe pic yesterday btw
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Harry (Hyeonggon) Yoo

WHOA!!

A lot has happened in my personal life this week (nothing serious, don’t worry). Everything seems to be settled now thankfully.
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I've found that often people ask advice and want a _certain kind of reply_.

Then I give my actual one and get ignored.

This is why I don't really bother replying to 'how do you get started in the kernel' type questions so much now :)

People want some dopamine hit 'inspirational' message that massages their ego.

And you can find ENDLESS fuckers on this site who will give you that, the type who wear fancy scarfs and never reply to anybody who is 'below' them.

But they're lying to you guys.

The truth is the truth.

I have the same experience when people ask about weight loss...

It's very much the case that holywood/internet versions of laudable qualities are in strict contrast to how they actually look.

Courage, persistence, resilience, strength are all extremely gritty, nasty, unpleasant things that often get you ostracised.

Much easier to kid yourself and live in some opium-fuelled dream of how the world is. But people don't seem to like to wake up to that :)

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Harry (Hyeonggon) Yoo

It is always sad to say goodbye to a long holiday :’(
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Harry (Hyeonggon) Yoo

Edited 4 months ago
I'm thinking of making sandwiches on my own, as buying two a day really adds up each month! I just need to be careful not to make them too big and end up gaining weight...
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Linux 6.18 sched_ext Preps For Cgroup Sub-Scheduler Support

The sched_ext scheduler framework that allows creating kernel thread schedulers via BPF programs is ready with some updates for the Linux 6.18 kernel...
https://www.phoronix.com/news/Linux-6.18-sched-ext

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Harry (Hyeonggon) Yoo

Taking random photos alone on Saturday
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Vlastimil Babka πŸ‡¨πŸ‡ΏπŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦

This week I once again had a great time at @KernelRecipes ! Thanks a lot for inviting me, and for organizing such a nice conference! (and also for all the nice speaker and attendee gifts :)

Also glad we increased the SUSE presence from just me last year to 4 people this year! (which miraculously required only 2 more people to attend, who weren't there last year).

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