Posts
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Following
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Followers
115
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
repeated
vbabka

Edited 1 year 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 1 year 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
repeated
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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hyeyoo
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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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hyeyoo
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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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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @hyeyoo
Just realized that "PCI device" and "Peripheral" are a bit confusing
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka
Edited 1 year ago
@vbabka @kernellogger @gregkh
users will see the deprecation at least....
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
A few diagrams about PCIe. 1) An example PCIe topology 2) PCIe Switch and 3) Root Complex
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hyeyoo

Harry (Hyeonggon) Yoo

This is why I go to the gym
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @lkundrak@octodon.social
@lkundrak Press ANY to continue?
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @bagder@mastodon.social
@bagder wait, do even wearables use curl?
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @lkundrak@octodon.social
@lkundrak @ptesarik @vbabka

heh, the music is much more niche than I thought 😲
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hyeyoo

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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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @vbabka
@vbabka micro-benchmark then
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hyeyoo
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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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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @hyeyoo
Edited 1 year ago
The last one (I think) is having only limited time budget to read.
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @hyeyoo
Edited 1 year ago
Another big hurdle is just reading code without knowing what's behind.
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @alphaville@infosec.exchange
@alphaville
Alternatively you can pretend to understand the Linux kernel
https://medium.com/@c0ngwang/how-to-pretend-to-be-a-linux-kernel-expert-b1ca21ac6384
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hyeyoo

Harry (Hyeonggon) Yoo

Edited 1 year ago
A big barrier to reading and analyzing code is a psychological resistance to reading unfamiliar text
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hyeyoo

Harry (Hyeonggon) Yoo

Reply to @ptesarik@fosstodon.org
Edited 1 year ago
@ptesarik Yeah it's quite confusing, at first attempt I searched with the keyword "DMA" and "Direct Memory Access" but couldn't find anything useful - because it's very natural for device to access memory (by becoming bus master)
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