[sig-hypervisors] [RISC-V] [tech-unixplatformspec] SBI Debug Console Extension Proposal (Draft v1)

[Stefano Stabellini]

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.