social.kernel.org

Harry (Hyeonggon) Yoo

@hyeyoo

Posts

527

Following

99

Followers

116

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

Harry (Hyeonggon) Yoo

hyeyoo

https://2023.openinfradays.kr/schedule/day2

OCP APAC Techday is being held today in Seoul. Most of sessions are about CXL, AI, SSD. Still not sure if sessions are in english or korean.

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Harry (Hyeonggon) Yoo

hyeyoo

@ljs @lkundrak

(Misunderstanding) The Linux Memory Manager

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Harry (Hyeonggon) Yoo

hyeyoo

Reply to @hyeyoo

my laptop is screaming

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Harry (Hyeonggon) Yoo

hyeyoo

Reply to

Edited 2 years ago

@zeroday0619 @yuno

생각보다 돈버는 것 자체는 어렵진 않은거같아요
자기 자신에 대한 기준이 높아서 그렇죠.

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Harry (Hyeonggon) Yoo

hyeyoo

Edited 2 years ago

Something strange is always found while running and experimenting new development kernels

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Harry (Hyeonggon) Yoo

hyeyoo

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Harry (Hyeonggon) Yoo

hyeyoo

Reply to @hyeyoo

@ljs @vbabka But based on the Korean age system and law I was old enough to drink, still don't know why she asked

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Harry (Hyeonggon) Yoo

hyeyoo

@ljs @vbabka yup I tried to get wine on a flight around my 18th birthday, and the stewardess asked if I'm over 18. my birthday is August 6 and it was August 6 in South Korea and August 5 in the US, and the flight was on the Pacific Ocean ;) but I got the wine anyway

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Harry (Hyeonggon) Yoo

hyeyoo

Reply to @vbabka

@vbabka

Designing VIPT caches where size/associativity <= PAGE_SIZE is a way to avoid the synonym problem, no?

It gets tricky when size/associativity > PAGE_SIZE and it seems both Intel and ARM have patents to deal with it

https://patents.google.com/patent/US11314647B2/en
https://patents.google.com/patent/US20070033318A1/en

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Harry (Hyeonggon) Yoo

hyeyoo

@ljs LOL yes but I have never thought this was weird; it has been like this for a long time.

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Harry (Hyeonggon) Yoo

hyeyoo

@ljs

Haha I'm 2 years younger than yesterday!

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Harry (Hyeonggon) Yoo

hyeyoo

Reply to @monsieuricon

@monsieuricon yay Y2K38!

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Harry (Hyeonggon) Yoo

hyeyoo

The traditional Korean age system has been retired in South Korea, and now we use the international standard aging system.

I was 24 in the Korean age system, but now I'm legally 22 :P

https://www.bbc.com/news/world-asia-63903771

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Harry (Hyeonggon) Yoo

hyeyoo

@ljs thanks ;) and I hope to finish it sooooon

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Harry (Hyeonggon) Yoo

hyeyoo

Edited 2 years ago

@ljs wait did u sleep in the library lol
(I slept in my friends lab...)

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Harry (Hyeonggon) Yoo

hyeyoo

@ljs yes this semester is finished and it's summer break!
(but still have 3 semesters left T.T)

btw I was supposed to do an internship at a cloud company this year but seems I am almost ditched so now looking for undergraduate research internships :P

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Harry (Hyeonggon) Yoo

hyeyoo

@ljs no it's all done but my timezone is still shifted

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Harry (Hyeonggon) Yoo

hyeyoo

still haven't recovered from jet lag (?) from the final exam period. today went to bed at 11 PM, woke up at 2 AM, and it's now 6 AM.

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Harry (Hyeonggon) Yoo

hyeyoo

Edited 2 years ago

sometimes wanna stop posting normally and just shitpost all the time

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Harry (Hyeonggon) Yoo

hyeyoo

@ljs @kernellogger @sj

or a prompt confirming if you really know what you're doing ;)

BTW what would be different if it were in /sys/kernel/mm?

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