On 26/09/2022 18.06, Martin Povišer wrote: > FWIW my current workflow includes building the kernel under macOS, so > there’s some interest from me, but that will pass once the porting > project progresses enough. So far I get by with some local duct tape. > >> On 26. 9. 2022, at 10:09, Sven Peter <sven@xxxxxxxxxxxxx> wrote: >> >> On Mon, Sep 26, 2022, at 09:51, Nick Desaulniers wrote: > > (...) > >>> If this might seem helpful >>> to anyone's workflow, I wouldn't mind pursuing this (with some >>> cleanup, sending a more formal patch set). Maybe this helps us >>> bootstrap or get Linux up and running sooner on these machines? >> >> I've been either using a Linux VM or just a bare metal system running >> on these machine for quite a while now to build kernels. This would've >> been useful when I originally started though and VMs weren't working very >> well yet so maybe it's still worth pursuing. > > I really wanted to do it in a VM as a saner path, but I didn't find > a satisfactory way to share the working source tree between the macOS > host and Linux guest (which wouldn't slow down the build). > > Martin Just for context: Most of our (Asahi) developers' workflow involves loading kernels over USB from another machine. That other machine can be any OS, but if it's another M1/2 running macOS you get the additional perk of USB-PD tooling to remote-force-reboot the target machine as well as get a real physical serial port. The same tooling could be ported to Linux-on-M1/2 relatively easily, but nobody has done that yet (probably because these days we have a hypervisor that gives you a superset of that functionality anyway, over standard USB, so it's not that necessary). I personally use an x86 host and a hardware contraption to provide the same hard reboot/UART functionality (for the rare case when the hypervisor borks, to avoid having to hold down power buttons). So there are certainly some people who'd benefit from using a macOS machine as a build host, either for the special USB-PD functionality or because they just like macOS as a development environment. It sounds like getting it to work isn't that hard, so perhaps it's worth upstreaming? - Hector
