Posts
517
Following
485
Followers
397
Linux Kernel security developer, working for Microsoft. Also W7TXT. Views are my own.
Topics: #Linux #kernel #security, #amateurradio, #RF, #hamradio, #electronics, #science, #radioastronomy, #physics, #space, #arduino.

📡 https://w7txt.net/
🐧 https://blog.namei.org/
☠️ https://www.facebook.com/w7txt
jmorris

James Morris

Reply to @kernellogger@fosstodon.org
@kernellogger @monsieuricon who actually reads lkml ?
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jmorris

James Morris

Working on some long-needed updates to my 1.2m dish setup. Mounting an azimuth sensor (ETS25 absolute encoder) directly under the Az slew drive. A previous belt-driven version was too complicated. This is all upside down, btw. #amateurradio #hamradio #radioastronomy #electronics #microwave
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jmorris

James Morris

Reply to @breakingtaps@universeodon.com
@breakingtaps @North very interesting. Seems like it would be useful for epoxying tiny mmwave diodes, too.
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jmorris
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netdevconf@fosstodon.org

Netdev Conf

Reminder, the big day starts Monday 8:30. You can still join remotely! @netdev01 0x17 https://netdevconf.info/0x17/pages/sessions.html

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jmorris

James Morris

Reply to @stdlogicvector@chaos.social
@stdlogicvector The copper heatspreader (?) is worth $$ alone.
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jmorris

James Morris

Reply to @kees@fosstodon.org
@kees great to see this hw available for general use.
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jmorris

James Morris

Reply to @LaF0rge@chaos.social
@LaF0rge beautifully engineered. It's a shame it's not economically viable to manufacture most devices at this level of quality now. I'm always blown away when I open up old Tektronix or HP test gear, which was typically also aircraft rated.
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jmorris

James Morris

@breakingtaps interested in any info here, too.

RE: https://universeodon.com/users/breakingtaps/statuses/111319264146509283
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jmorris
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stgraber@hachyderm.io

Stéphane Graber

Video overview of 0.2 is live now!
https://www.youtube.com/watch?v=ePvhWNv-gp4

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jmorris

James Morris

Reply to @jmorris
@abraxas3d e.g., for ARQ there is STANAG 5066, which looks horrendously complex, but I wonder if some useful subset of that could be extracted. There’s an open source project which seems abandoned ? https://github.com/Rhizomatica/open5066
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jmorris

James Morris

Reply to @ellie@hachyderm.io
@ellie many many years ago, running a large Solaris prod box for the first time, after Linux. ‘killall’ command behaviour was different.
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jmorris

James Morris

Reply to @g4dbn@mastodon.radio
I'll be very interested to see how it performs.
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jmorris

James Morris

Reply to @avidseeker@fosstodon.org
@avidseeker Try finding a file via a desktop GUI on any OS these days, "find" sucks less, IMHO.
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jmorris

James Morris

Made some millimeter waves today, presumably at 47.088 GHz. Using a Kuhne synth at 11.772 GHz into a WA1MBA quadrupler. I’m able to detect power in this band (6mm), but not frequency (yet). #microwave #mmwave #hamradio #amateurradio.
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jmorris

James Morris

Reply to @abraxas3d@mastodon.radio
@abraxas3d Thanks for all the work you do! One of the participants made a good point that this may lead to more experimentation -- hoping to see an open high speed digital waveform for HF one day. The STANAG/M110A waveforms may be one possible direction. I have a few simple ideas but not enough time... as always.
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jmorris
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LWN@fosstodon.org

LWN.net is now @LWN@lwn.net

Incus 0.1 released https://lwn.net/Articles/947136/

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jmorris
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l0kod@mastodon.social

Mickaël Salaün

Reply to @bluca@fosstodon.org

"Microsoft Azure Boost: Image-based Linux powering the Azure fleet", a deep dive into a tailored Linux distro focused on security that provides offloading and acceleration. A great talk by @bluca at @allsystemsgo!
A lot of stuff is introduced: Linux hardening, remote attestation, SELinux, dm-verity, IPE, LUKS, fs-verity, overlayfs, systemd portable services, soft reboot, ARM, FPGA, DPDK...
Slides: https://cfp.all-systems-go.io/all-systems-go-2023/talk/7URRNC/
Recording: https://youtu.be/iB-wRdC8zNs

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jmorris

James Morris

Reply to @selzero@syzito.xyz
@selzero
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jmorris

James Morris

Ran a full disk threat scan on my Mac with MS Defender ($work requires it), and it found my archive of Linux malware from 1997, and wants to delete it :(
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jmorris

James Morris

Reply to @mcdanlj@social.makerforums.info
@mcdanlj I’ve tried a YG-1 spiral flute tap here now and it is working well. It seems to need much lower torque than regular or form taps. I think the form tap is more precise and will provide more strength, but this is not critical in my application.
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