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this post was submitted on 23 Sep 2025
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Docker has little overhead and wouldn't this require running the entire kernelmultiple times, take up more RAM?
Also dynamically allocating the RAM seems more efficient than having to assign each kernel a portion at boot.
If this works out, it's likely something that container engines would take advantage of as well. It may take more resources to do (we'll have to see), but adding kernel isolation would make for a much stronger sandbox. Containers are just a collection of other isolation tools like this anyway.
gvisor already exists for environments like this, where the extra security at the cost of some performance is welcome. But having support for passing processes an isolated, hardened kernel from the primary running Linux kernel would probably make a lot of that performance gap disappear.
I'm also thinking it could do wonders for compatibility too, since you could bundle abandoware apps with an older kernel, or ship new apps that require features from the latest kernel to places that wouldn't normally have those capabilities.