Re: [PATCH] tty: Don't force RISCV SBI console as preferred console

From: Christoph Hellwig
Date: Fri Apr 26 2019 - 02:21:54 EST


On Thu, Apr 25, 2019 at 09:41:21PM -0700, Atish Patra wrote:
> Do we even need HVC_SBI console to be enabled by default? Disabling
> CONFIG_HVC_RISCV_SBI seems to be fine while running in QEMU.
>
> If we don't need it, I suggest we should remove the config option from
> defconfig in addition to this patch.

I think the whole concept of the SBI console is a little dangerous.
It means that for one piece of physical hardware (usually the uart)
we have two entiries (the M-mode firmware and the OS) in control,
which tends to rarely end well.