On Wednesday, 30.09.2015 at 21:00, Andrew Stuart wrote: > >>Any ideas? > > I’m out of my depth technically here but on Linux you can send console output > to both VGA and serial. I don’t know if that is practical or relevant here. > https://www.kernel.org/doc/Documentation/serial-console.txt
We definitely don't want to do that by default because a) It's slow b) The platform might have something else on COM1. Anyway, I've figured out the obvious answer, which is to detect Xen (or in fact other hypervisors) using CPUID and prefer the serial console if on Xen. Just trying to get it into a committable state...
