p.s.: i was wrong
>While we prioritize compatibility, it is important to note that Asterinas does not, nor will it in the future, support the loading of Linux kernel modules.
https://asterinas.github.io/book/kernel/linux-compatibility....
lol. No. They just added a CPU and then offloaded all the closed source userspace driver code to it leaving behind the same dumb open sourceable kernel driver shim as before (ie instead of talking to userspace it talks to the GPU’s CPU).
> The past 30 years of the Linux kernel's evolution has proven that there is no need for a stable kernel ABI.
What the last 30 years have shown is that there is actually a need for it, otherwise DKMS wouldn’t be a thing. Heck, intel’s performance profiler can’t keep up with the kernel changes which means you get to pick running an up to date kernel or be able to use the open source out-of-tree kernel module. The fact that Linux is alone in this should make it clear it’s wrong. Heck Android even wrote their own HAL to try to make it possible to update the kernel on older devices. It’s an economics problem that the Linux kernel gets to pretend doesn’t exist but it’s a bad philosophical position. It’s possible to support refactoring and porting to new platforms while providing ABI compatibility and Linux is way past the point where it would even be a minor inconvenience - all the code has ossified quite a bit anyway.
My experience of using Linux and having devices that used to work become unsupported suggests just the opposite.
> While we prioritize compatibility, it is important to note that Asterinas does not, nor will it in the future, support the loading of Linux kernel modules.
and emulate the virtual filesystems (/proc/...)
It’s probably easier if the kernel’s key goal is to be compatible with the Linux ABI rather than being compatible with its earlier self while bolting on Linux compatibility.
I was hired at Joyent largely to work on bhyve so that Triton and Joyent’s public cloud had a way to run Linux VMs when full Linux compatibility was more important than the efficiency of zones/containers.
They might not yet implement everything that's needed to boot a standard Linux userland but you could say boot straight into a web server built for Linux, instead of booting into init for example.