Posts
576
Following
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Followers
118
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
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monsieuricon

K. Ryabitsev 🍁

When patchwork integration is configured, b4 will now retrieve the CI status of each patch as well.
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ljs

I just hit 1,010 pages :)

And still so much to do...
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hyeyoo

Harry (Hyeonggon) Yoo

GERMAN VILLAGE IN KOREA
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hyeyoo

Harry (Hyeonggon) Yoo

Where are you going sir
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vbabka

Edited 2 years ago
OK, enough joking, time to get serious now https://lore.kernel.org/all/20231113191340.17482-22-vbabka@suse.cz/T/
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 2 years ago
there are so many batteries I should charge everyday... laptop, smartphone, smart watch and bluetooth earphones.

start to feel nervous when one of them is gone.
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hyeyoo
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monsieuricon

K. Ryabitsev 🍁

So, you want to read LKML with Gmail (experimental, testers needed)

https://lore.kernel.org/workflows/20231115-black-partridge-of-growth-54bf2e@nitro/
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LWN@fosstodon.org

LWN.net is now @LWN@lwn.net

[$] Faster kernel testing with virtme-ng https://lwn.net/Articles/951313/

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monsieuricon

K. Ryabitsev 🍁

PSA: we're only a few weeks away from Linux Kernel 6.6.6.
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Harry (Hyeonggon) Yoo

Edited 2 years ago
A few diagrams about PCIe. 1) An example PCIe topology 2) PCIe Switch and 3) Root Complex
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Harry (Hyeonggon) Yoo

This is why I go to the gym
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Harry (Hyeonggon) Yoo

what, there's a script to import linux kernel headers to QEMU.

From commit 412a8245 ("pci_regs.h: import from linux"):
```
It seems to make sense to import pci_regs.h from linux: why maintain our own?

As a first step, move the header to standard-headers, and add it to the update script.
```
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securepaul@fosstodon.org

Paul Moore

I'm a little surprised and disappointed that the 2023 Linux Foundation TAB election only has five candidates running for the five open seats. All five of the candidates are existing TAB members.

It would seem like one of the issues the TAB should focus on this year is getting more people interested in TAB participation.

https://lore.kernel.org/lkml/e851a8e5-c4c2-4b5d-887a-509e591cff49@intel.com

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Harry (Hyeonggon) Yoo

Edited 2 years ago
A big barrier to reading and analyzing code is a psychological resistance to reading unfamiliar text
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Harry (Hyeonggon) Yoo

What kind of benchmark is it
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Harry (Hyeonggon) Yoo

Edited 2 years ago
TIL:

DMA in PCI(e) means a device initiates memory read/write transactions.

But how to make a device initiate such a transaction is device-specific (i.e. a device implements a DMA command via its registers)

Wondering if a DMA interface can be added to CXL.io protocol so that page migrations can be done in a peer-to-peer manner without host interference. (in systems with multiple memory tiers)
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Harry (Hyeonggon) Yoo

Edited 2 years ago
It's already 1am but 3 hours left until CXL MC... uh, I'm tired
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jejb@mastodon.online

James Bottomley

@linuxplumbersconf Youtube Live Stream URLs are now available on the Schedule Overview page (https://lpc.events/event/17/timetable/#all).

Find the track you want and click the paperclip on the upper right corner to bring up the Live Stream Link

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Harry (Hyeonggon) Yoo

Edited 2 years ago
This winter I'm going to do a research project (for the first time in my life!) with other students, at Purdue University (Indiana).

2 months is bit short for a project, so we need to find a very small question that no one has answered.

It seems I've found a question suitable for our need in the compiler area, but I need to consult with the professor to verify if it's a valid question.
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Harry (Hyeonggon) Yoo

After 2 months of learning related stuffs I finally feel like I'm ready to dive into CXL device emulation code.
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