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Linux kernel hacker and maintainer etc.

OpenPGP: 3AB05486C7752FE1

Jarkko Sakkinen

trying out #aerc #email client
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Jarkko Sakkinen

I have now kind of current state of desktop in both #x86 and #ARM ends :-)

  1. i9-13900k / 64 GB / Intel ARC A-770
  2. Mac Mini M2 Pro 12 12/19 core version / 32 GB

The 2nd is both the computer I do music with (i.e. my studio machine) and also #ARM test farm for #TPM. I compile ARM kernels with it and run them in VMWare Fusion, which provides nicely packaged #vTPM’s.

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Jarkko Sakkinen

i find paying for #sublimetext and using it with #neovintageous much better option than #vscode, if I need a GUI editor e.g. in meetings. It is fast and uncluttered. If you write code normally in the #terminal with #neovim, vscode can feel a bit sticky, and also stressful because it has too much shit going on in the screen estate. Milliseconds do affect to the overall feeling just like they would when e.g. when playing with a MIDI keyboard.

And generally if it is not fully open source, I feel less worried to use an application where I pay a sum of money for the license. Because the profit is often acquired by some means anyway, it is the most transparent for me…

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Jarkko Sakkinen

#remindertomyself

$ ps -T -o comm,policy,rtprio -p $(pgrep -w -d ',' irq) | egrep '(snd|hci)'
irq/148-xhci_hc FF      85
irq/147-ahci[00 FF      50
irq/203-snd_hda FF      90
irq/204-snd_hda FF      90
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Jarkko Sakkinen

#renewed my accidentally #expired
@lwnnet #subscription. unintentionally i had used single time payment last year (before that i was using corporate subscription while i was still working at intel). now it is set to automatic payment like it should be :-)
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Jarkko Sakkinen

i have now kind of "#intel of the present day" #desktop configurtion in my main #development machine: i9-13900k with 64GB of DDR and Intel Arc A770 GPU.

ive been waiting the day to get rid of shitty #nvidia #hardware, causing all the time compatibility issues...
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Jarkko Sakkinen

on #macos (which I have in my #university laptop, thus learning the ways) the easiest way to do #linux #kernel development and testing is podman (brew install podman). each container will have a #QEMU instance backing it up.

that sorted out, using macos does not really make any difference, as full-screen #tmux is pretty much the same always :-) any desktop that can launch a web browser is good enough desktop for me really...
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Jarkko Sakkinen

this is how i deal with #password's. i protect the critical passwords with #PGP public key. Any password where #leakage is not an existential question is offloaded to #lastpass. The keyring itself is protected by #yubikey. i feel overally pretty safe :-)
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Jarkko Sakkinen

Considering #Apple silicon #MacBookPro’s: #VMware #Fusion combined with an #external #drive is an option worth of considering for running #Linux.

By provisioning direct access (aka pass-through) to the USB device for the guest, VFS and page cache of the host OS get surpassed, and disk access is as fast as it can ever be.

The resulting hard drive is (obviously) a real bootable Linux installation, not a VM image, which can turn out to be a real life-saver some day (e.g. if laptop dies).

For #development tasks the resulting overhead compared to a #native installation should rarely be any sort of problem because #throughput is nearly identical. The resulting #latency hit matters only for soft real-time (e.g. video post-production and along the lines).

I got MBP from @NISEC_TAU, so I have had to find a solid “Linux strategy” for it during last few days [1] :-)

[1] https://twitter.com/nisec_tau

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Jarkko Sakkinen

:𝚙𝚞𝚝=&𝚐𝚞𝚒𝚏𝚘𝚗𝚝 #notetomyself #neovim
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Jarkko Sakkinen

Organizing #wine folders for #yabridge #linux #audio #vst #vst3 #clap
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Jarkko Sakkinen

Looking at https://github.com/keystone-enclave/linux-keystone-driver/tree/master/linux-keystone-driver and how much I need cut it and migrate arch/riscv to make something similar as tpm_ftpm_tee. #linux #kernel #tpm #ftpm #keystone #riscv #arm #trustzone #tee
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Jarkko Sakkinen

by trial and error found workaround for #Qt application (read #neovim-qt) launching inside #WSL guest: ln -sf /mnt/wslg/.X11-unix /tmp/.X11-unix

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Jarkko Sakkinen

This is how I currently configure inbound #SSH connections to a #WSL guest: https://gist.github.com/jarkkojs/9cd9300b10613cc32348b3e3d5acf1ab #Linux #Windows
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Jarkko Sakkinen

Created https://github.com/jarkkojs/linux.nix with a flake collecting OS image recipes for test #kernel's. My main observation of #nixos is that t is great for testing #linux on x86, but with #ARM boards such #raspberrypi it really just gets in the way and is factors slower than using something like #buildroot.
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Jarkko Sakkinen

ad-hoc kernel testing #nixos style. produces an #sdcard image for x86-64 ready to be booted on bare metal or VM. #linux #buildroot
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Jarkko Sakkinen

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