On Thu, 2 Jun 2022, Vedvyas Shanbhogue via lists.riscv.org wrote:
Of course, if a hypervisor is already available for the board, then it would be just as easy to use a paravirtualized interface, e.g. Xen's HYPERVISOR_console_io hypercall. But somebody has to port the hypervisor first :-)
Of course a console is needed. But I was questioning the need for something much more elaborate than a putchar/getchar interface. I understand its needed to port the hypervisor but I undersatnd it would be needed for very early parts of the hypervisor where it does not even have the ability to master a uart on its own.
Yeah, I think you are right that it is not a must-have feature but a nice-to-have feature.
