He is also using a Macbook Air, probably not his main machine. From the release notes of the latest kernel release [1]
> On a personal note, the most interesting part here is that I did the
release (and am writing this) on an arm64 laptop. [...]
> Not that I've used it for any real work, I literally have only been
doing test builds and boots and now the actual release tagging. But
I'm trying to make sure that the next time I travel, I can travel with
this as a laptop and finally dogfooding the arm64 side too.
> On a personal note, the most interesting part here is that I did the release (and am writing this) on an arm64 laptop. [...]
> Not that I've used it for any real work, I literally have only been doing test builds and boots and now the actual release tagging. But I'm trying to make sure that the next time I travel, I can travel with this as a laptop and finally dogfooding the arm64 side too.
[1] https://lore.kernel.org/lkml/CAHk-=wgrz5BBk=rCz7W28Fj_o02s0X...