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Linux kernel hacker and maintainer etc.

OpenPGP: 3AB05486C7752FE1
jarkko

Jarkko Sakkinen

#asahi
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jarkko

Jarkko Sakkinen

https://www.sciencenews.org/article/earths-inner-core-has-weird-rotation
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jarkko

Jarkko Sakkinen

Rick Beato is like Anthony Bourdain of music, favorite tubers: https://www.youtube.com/watch?v=1bZ0OSEViyo
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jarkko

Jarkko Sakkinen

#note to myself, not throughly thought out...

Useful #kernel feature for #hibernate might be a file that would tell the number of pages required for hibernate.

The "O-figure" for hibernate is AFAIK O(n+sqrt(n)) but exact number is dependent on kernel internals but in theory could be calculated by simulating the process without committing.

Instead of swap it might also be useful to have "spare" volume of ~100 GB for doing hibernate and e2scrub type of operations, which could have its own design for encryption etc. Swap for swapping overcommitted memory more than few at most GiB is not that useful these days.

#linux
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jarkko

Jarkko Sakkinen

Reply to @jarkko
I wonder if this is even Guinness World Record material...
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jarkko

Jarkko Sakkinen

Edited 1 year ago
Just an observation, not a political opinion, but it might be that Mr Biden and Mr Trump are the oldest duel in any presidential election of any democratic country in the world ever in the history of mankind.

On the bright side, it means that US has no age racism I guess then 🤷
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jarkko
repeated
majorlinux@toot.majorshouse.com

Marcus "MajorLinux" Summers

I feel like if you are going to take time to talk to Tucker Carlson, you deserve everything that's about to come to you.

I do, however, hope nothing happens to the users.

Telegram says it has 'about 30 engineers'; security experts say that's a red flag | TechCrunch

https://techcrunch.com/2024/06/24/experts-say-telegrams-30-engineers-team-is-a-security-red-flag/

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jarkko

Jarkko Sakkinen

Despite being somewhat controversial figure, I really don't think that either of these would have been appropriate end outcomes for Mr Assange:

1. Guantanamo Bay
2. ADX Florence

This is not same as saying that I would fully support all the choices and values of the person in question.
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jarkko

Jarkko Sakkinen

I had my first ever Mandela Effect experience, I recall seeing reports of his death like half years ago.

Anyway, congrats to Mr Tanenbaum, well deserved! Only thing that surprises me is that why he did receive ACM award earlier than this.

https://vu.nl/en/news/2024/andrew-s-tanenbaum-receives-acm-software-system-award

#minix #linux #acm
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jarkko
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phoronix@masto.ai

Phoronix

NUMA Emulation Yields "Significant Performance Uplift" To Raspberry Pi 5

Engineers at consulting firm Igalia are exploring NUMA emulation for ARM64 (AArch64) due to the potential of "significant" performance uplift as observed on the popular Raspberry Pi 5 single board computer...
https://www.phoronix.com/news/ARM64-NUMA-Emulation-RPi5

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jarkko

Jarkko Sakkinen

Reply to @mikebabcock@floss.social
@mikebabcock i have zero plans to use hibernation in my hosts but i'm interested to test it as a kernel feature :-) and generally i want a common image that works for my host system and test targets (usually VM's ,sometimes NUC's).
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jarkko

Jarkko Sakkinen

Reply to @jarkko
@mikebabcock I'm doing this partly to research what would be optimal configuration to enable hibernate, and possibly try out encrypted hibernate patch set, which never landed to the mainline. So I'm doing both reconfiguration for my host system and designing something for test target VM's at the same time :-)

One observation is that probably it is better to encrypt per logical volume than encrypt the physical volume because then the partition is reachable for so called restore kernel. I've previously encrypted the physical volume and created logical volumes inside it.
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jarkko

Jarkko Sakkinen

Reply to
@n0toose thanks!
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jarkko

Jarkko Sakkinen

Reply to @ljs
@ljs i prefer curd after gym ;-)
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jarkko

Jarkko Sakkinen

Edited 1 year ago
When looking at #Github's front page, which looks like a shoot 'em up video game to me, I'm glad that I've consolidated my self-created active repositories to #Codeberg. Forks to stuff that I contribute to remain in #Github and #Gitlab obviously, and that is an acceptable compromise.

For me it feels sometimes that quite many commercial web sites reached their tip point maybe about 10-12 years ago. Since then they've started to add stuff that I don't want, and sometimes even quite controversial features, which I need to then proactively disable.

It's a bit same as with yogurt based food products. Yogurt is a product that does not really develop anymore but still food companies have new versions of this product for every season with supplements added and stuff like that.

So I guess I can draw the conclusion that commercial web reached the "yogurt state" around 2012 :-)
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jarkko

Jarkko Sakkinen

Edited 1 year ago

Would it be unorthodox for sbsign to use kernel crypto API (optionally) instead of OpenSSL?

One use case for this would be MOK private key that is encrypted while at rest with TPM, and never exposed to CPU.

This would be a great application for the kernel feature that I’m working on i.e. an asymmetric TPM2 key (patch set is slowly getting together, right now at iteration seven).

Just to name an example, this is how Ubuntu manages that key as of today: https://wiki.ubuntu.com/UEFI/SecureBoot/Signing. [for the record, Ubuntu is not doing worse job in this than anyone else, they just have awesome documentation, thus the example]

#linux #kernel #tpm

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jarkko

Jarkko Sakkinen

Reply to @mikebabcock@floss.social
@mikebabcock I also realized that it makes sense to have swap as LVM2 volume because I have essentially two different swap configurations depending on use and purpose: 2GB (non-hibernate) and 60-80GB (hibenate). LVM2 will help in this case later on tune between these choices a bit...
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jarkko

Jarkko Sakkinen

Reply to @jarkko
@mikebabcock I’m going to use lvm2 after all. There is a useful commands depending on it: e2scrub. So it is a constraint then.
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jarkko

Jarkko Sakkinen

Reply to @jarkko
@vbabka That said, definitely going to check Heiko's work. i don't know him personally but often seems to have interesting takes on topics, and perhaps these tools might support better different workflows.
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jarkko

Jarkko Sakkinen

Reply to @jarkko
@vbabka https://archlinux.org/download/ this is where I found about sq. one large volume using it for signature checks instructions is a relevant ref for long-term applicability. And it seems to be already somewhat well defined product.
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