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Google is preparing to let you run Linux apps on Android, just like Chrome OS
(www.androidauthority.com)
this post was submitted on 11 Oct 2024
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Interesting... but well.. Android isn't rooted, so will it use chroot or something like that? Or it will use a whole another kernel, complete VM?
Well, the summary pasted in the post mentions "VM" about a dozen times
That's a bad move of Google, this has no reason at all!
Chroot/docker will use a more practical way to run Linux, as Android is just a Linux distro, why bother with running a whole another kernel!
A reasonable build of the kernel optimized for virtualization won't take more than a few tens of megabytes of RAM (and it will have support for memory ballooning, so the virtualized kernel will give the memory it doesn't need back to the host), and the userspace will need to be separate anyway due to how different Android is to normal Linux distros.
Containers are nice when you want to run dozens of separate services on the same server or want to get the benefits of infrastructure as code, but in this case they would provide minimal benefits at the cost of having no way of loading any kernel modules not built into whatever ancient kernel version your SoC manufacturer decided you have to use on your phone. Also, container escape vulnerabilities are still a bit more common than full VM escape, so this is also good for security on top of being more useful.
For what I've read and heard mentioned by engineers when I worked for a phone manufacturer, Android already heavily uses virtualization. If I remember correctly it does that for the A/B partitions for updating, as well as for the multiple user support. But I'm very open to anyone with closer experience to the Android kernel than I have chiming in with better specifics