The RISC-V ISA is highly modular with cpu vendors being able to pick from a number of standardized extensions and even invent their own.
Yet we want a unified kernel Image and userspace that does not have to care about which extensions are available but still is able to use them.
So after showing where this matters, I want to introduce some techniques the kernel has in its lower levels that allows us to do this performantly.
The RISC-V ISA is highly modular with cpu vendors being able to pick from a number of standardized extensions and even invent their own.
Yet we want a unified kernel Image and userspace that does not have to care about which extensions are available but still is able to use them.
So after showing where this matters, I want to introduce some techniques the kernel has in its lower levels that allows us to do this performantly.