Asahi Linux progress report

However, Apple is ~7% of the whole PC market, they tend to have 1-2 hardware models at the same time, and they mass-produce them.

Given the number of hardware decisions M1 has inherited from previous Apple devices and the contents of the initial patch series, one can try to extrapolate the amount of kernel work, and it seems to be quite small, for ~7% of all new PCs sold in the world.