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#operatingsystems

2 posts2 participants0 posts today
Schneier on Security RSS

Ubuntu Disables Spectre/Meltdown Protections

A whole class of speculative execution attacks against CPUs were published in 2018. They seemed pretty catastrophic at the time. But the fixes were as well. Specul... schneier.com/blog/archives/202

Schneier on Security · Ubuntu Disables Spectre/Meltdown Protections - Schneier on SecurityA whole class of speculative execution attacks against CPUs were published in 2018. They seemed pretty catastrophic at the time. But the fixes were as well. Speculative execution was a way to speed up CPUs, and removing those enhancements resulted in significant performance drops. Now, people are rethinking the trade-off. Ubuntu has disabled some protections, resulting in 20% performance boost. After discussion between Intel and Canonical’s security teams, we are in agreement that Spectre no longer needs to be mitigated for the GPU at the Compute Runtime level. At this point, Spectre has been mitigated in the kernel, and a clear warning from the Compute Runtime build serves as a notification for those running modified kernels without those patches. For these reasons, we feel that Spectre mitigations in Compute Runtime no longer offer enough security impact to justify the current performance tradeoff...
#operatingsystems#Uncategorized#cyberattack
ResearchBuzz: Firehose

How-To Geek: 9 Open Source Operating Systems That Aren’t Linux. “If you hear the term ‘open-source,’ you might think of Linux. However, Linux distros aren’t the only open-source operating systems. There are plenty in use today besides Linux. Some date back to even before Linux existed.”

https://rbfirehose.com/2025/06/14/how-to-geek-9-open-source-operating-systems-that-arent-linux/

ResearchBuzz: Firehose | Individual posts from ResearchBuzz · How-To Geek: 9 Open Source Operating Systems That Aren’t Linux | ResearchBuzz: Firehose
More from ResearchBuzz: Firehose
#linux#opensource#operatingsystems
ResearchBuzz: Firehose

Engadget: Everything Google announced at The Android Show. “Google I/O 2025 is still a week out, but Google shared a taste of the updates coming to Android and the larger Android Ecosystem at a separate event today, dubbed The Android Show: I/O Edition.”

https://rbfirehose.com/2025/05/17/engadget-everything-google-announced-at-the-android-show/

ResearchBuzz: Firehose | Individual posts from ResearchBuzz · Engadget: Everything Google announced at The Android Show | ResearchBuzz: Firehose
More from ResearchBuzz: Firehose
#android#google#googleio
Farooq | فاروق

What #unixlike operating systems do you know which are easy to port? Something like #NetBSD. I wonder if there is anything written in #commonlisp or #rust

There are some options but I'm not sure how much easy are they to port. I've heard many positive comments about bare metal development using Rust. I wonder how is common lisp in this regard.

I have extensive programming experience but not on bare metal or kernel programming.

Boosts for wider participation in the discussion are welcome.

#foss#baremetal#baremetalprogramming
Continued thread
Flipboard

Security engineer @alexhaydock acquired a Wii at the #EMF2024 Swap Shop. He intended to use it to emulate games, but when he realized that it could be used to host a website, he decided to try that instead. @404mediaco’s Samantha Cole spoke to him about how well it’s working, and what he’s planning to do with it (#EMF2026, here he comes). Check out the second link to find out how our friends at 404 are doing, and what they’re cooking up next.

404media.co/this-website-is-ru

404media.co/how-404-media-is-n

404 Media · This Website Is Running on a WiiAlex Haydock found a dusty old Wii console at a hardware swap and modded it to run his website.
#Technology#Tech#Web
Replied in thread
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Kevin Karhan :verified:

@BernieDoesIt @Catvalente there is:

  • REFUSE TO RELEASE ON #iOS UNTIL THE TERMS ARE CHANGED!

As with every #Platform, #Software makes #OperatingSystems and the #OperatingSystem makes #Hardware.

  • This worked with #WindowsPhone and #UWP: everyone refused to build #Apps for it and thus it died pretty quickly.

And if you want to say that's not an option, take a look at #AltStore which automates all the necessary work to perpetually #sideload any #App on iOS in a noob-friendly way.

Remember: "Everyone else does it" never was and never will be a valid excuse for any shit system!

  • Also you could just refuse to offer the sales on Apple's platform and add any "#Premium Features" post-launch with your own payment & licensing infrastructure. If you're big enough or small enough you may get away with it. #NotLegalAdvice

Otherwise band together with other #developers and coordinate.

And if you allow Apple to exploit you harder than #Valve, then you normalize that shit!

Soh Kam Yung

"Yes, you heard it right: Apache NuttX now supports the Python interpreter on ESP32-S3!

NuttX is a platform that can run applications built with programming languages other than traditional C. C++, Zig, Rust, Lua, BASIC, MicroPython, and, now, Python."

developer.espressif.com/blog/2

Espressif Developer Portal · Running Python on ESP32-S3 with NuttXThe developer resources in just one place!
#NuttX#ESP32#Microprocessors
Skylar the Ferret

Here's something I find rather #annoying when it comes to #operatingsystems and their public image. I had to install both Windows and Linux on a machine, and I want you to determine which was #userfriendly #Windows and which is #Linux:

OS 1:
Attempt to download the ISO from the manufacturer's website
Get through all of the prompts just to be denied the download
Realize that your adblocker is causing the manufacturer's website to see you as a threat, so you turn it off
Still denied
Realize that your LAN's DNS server which also blocks ads is causing the problem too, so you turn it off
STILL DENIED
Use a completely different browser and get it downloaded
Run the installer, but it sees no disk drives in the machine
IRST must be loaded before the installer will continue
"Driver install error"
Find a 3 year old copy of an ISO because you're a pack-rat data hoarder
Finally get it installed
Spend the next 6 hours updating

OS 2:
Download from manufacturer using torrents, utilizing all of your bandwidth
Install OS

Continued thread
*
Lorry

1/ Just because, here's my LSI-11 desktop - It works, they used much better capacitors in those days.

Way back when, the LSI-11 was often used to teach people Operating Systems and Compiler Design, and in my CS degree in 1986 we'd fiddle with MINIX on these things, and deal with re-writing different low-level UNIX things. Life was much easier with only 50 instructions to work with.

#DEC#Digital#PDP11
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