Anthony Liguori wrote:
On x86 the kernel uses bios output for early prints. We don't have bios and do therefore need to bring up a console device as early as possible so that we can see kernel panics during I/O subsystem detection/startup. All s390 console devices do support this function (3215/3270 and ASCII console), and it is used only up to the point when the kernel has its console subsystem ready to run.What is this used for?
