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Following
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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
hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
not sure why it's so common to refer USB flash drives simply as 'USB' in Korea.

once I asked my friend:
me: Can I borrow your USB flash drives?
friend: Why are you saying like that? you can just ask to borrow 'USB'
me: Well, USB is just a bus specification...
friend: What... (she gave a really weird look)
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ljs

Just because you have imposter syndrome doesn't mean you're not one
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
it seems lore.kernel.org has been unstable over the past few days?
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hyeyoo

Harry (Hyeonggon) Yoo

I was thinking of buying a backpack at the employer mall, but the shipping + taxes cost $95 for $100 a product.

I know international shipping is expensive but buying this doesn't make sense :(
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hyeyoo

Harry (Hyeonggon) Yoo

A cat I met at a cafe
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
A quick update after a while:

I'm in my final semester as a senior (bachelor's) now. Have been super busy these past few months working on my paper while doing a NVIDIA SWE internship. Still bit busy juggling job hunting, the internship, and my graduation project. But things are much better now since the paper is finally submitted.

Lately I've been applying for jobs and doing interviews, trying to become a professional kernel developer (lol, turns out there aren't as many kernel developer jobs as I thought). If it doesn't work out, well... it is what it is :D I don't have a backup plan for that.
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vbabka

I guess a lru_ext proposal is only a question of time now? Maybe even oom_ext although the userspace oomd's might be sufficient.
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rostedt

Steven Rostedt

THIS IS IT!!!

The last hurdle for PREEMPT_RT being merged into mainline has just removed by this pull request. Leaving the door open for PREEMPT_RT to be added to 6.12!

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hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
Implementing FAST-9: Image Corner Detection algorithm using Verilog (AI-SOC Design homework)
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
There are a few remaining things I want to learn while I'm still an undergraduate:
Compilers, Electronic Circuit and VLSI

The latter two are tough and confusing...
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hyeyoo

Harry (Hyeonggon) Yoo

Got a new job
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munin@infosec.exchange

Fi 🏳️‍⚧️

OK, here's a take for you:

PDFs are not a document format. Instead, as they encapsulate an executable (postscript) and a set of resources that are accessed in a sandboxed environment, they constitute a container.

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kernellogger@fosstodon.org

Thorsten Leemhuis (acct. 1/4)

Announcing : Streamlining performance optimization

https://netflixtechblog.com/announcing-bpftop-streamlining-ebpf-performance-optimization-6a727c1ae2e5

"'"bpftop provides a dynamic real-time view of running eBPF programs. It displays the average execution runtime, events per second, and estimated total CPU % for each program. This tool minimizes overhead by enabling performance statistics only while it is active."'"

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hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
Visiting Scholar at Purdue University, West Lafayette, Indiana State (2024.01.04 ~ 2024.02.24)
Good bye Purdue University!

It has been so intense, now suffering from jet lag and getting back to real life.
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
Was working out today wearing this tshirt, suddenly someone asked me "You use Linux? I use Arch by the way..."
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hyeyoo

Harry (Hyeonggon) Yoo

At this point obviously I'm here to drink more
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hyeyoo

Harry (Hyeonggon) Yoo

First week at purdue
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hyeyoo

Harry (Hyeonggon) Yoo

My friend told me to play Minecraft together (It's been 4 years since last played) but I can't because Microsoft threw away my Mojang account 😠 😠

```As of December 18, 2023, the post-migration process for Mojang accounts has officially ended```
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
Yesterday, my internship finally finished. It was fun and inspiring to look at a project (QEMU) other than Linux, and learn how PCIe/CXL/ACPI/UEFI works in general.

Now trying to do some work (a little) on CXL emulation in QEMU, though I'm not sure how far I want to pursue as my heart is still in MM.

https://lore.kernel.org/linux-cxl/20231222090051.3265307-1-42.hyeyoo@gmail.com/T
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robpike@hachyderm.io

rob pike

This link captures the confusion about how to pronounce "fsck":

https://lwn.net/Articles/190223/

Here's the truth. Ted Kowalski, username frodo, may he rest in peace, was the original author, just down the hall from my office in Murray Hill, and his name for the program had a 'u' where there is now an 's'. Management made him change it for distribution, but they couldn't make him change his pronunciation.

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