book/src/development/design/kernel.md

# Microkernel
The core `kernel` of **Mercury** will be highly limited, implementing only necessary portions.
This allows other functionality to be simply run in userspace.

Additionally, most code should be put into separate libraries then pulled into the `kernel` code.
This will likely be done via `git submodules`.

Initially, it will be built for `RISC-V`, then `ARM` *(focused on running in a [VM](/user/virtual-machine.md))*, then on a **Raspberry Pi**.
Afterwards, we can put focus towards building out various features.

Support for multiple targets will be done via `Cargo.toml` targets, cross-compilation, and [conditional compilation](https://doc.rust-lang.org/reference/conditional-compilation.html).

## Boot Process
*To be implemented*

## Memory Management
*To-Do*

## Processes
*To-Do*
- [postcard](https://lib.rs/crates/postcard) for message passing