Re: [PATCH] acpi, spcr: Make SPCR available to x86

Prarit Bhargava
2018-02-12T14:49:47Z

On 02/12/2018 09:43 AM, Timur Tabi wrote:
> On 2/12/18 7:47 AM, Prarit Bhargava wrote:
>> ACPI SPCR is used by a vendor to define the serial console for a system. If
>> SPCR exists a user can add kernel parameter "earlycon" (no extra kernel
>> parameters) and the console will work out-of-the-box.
>
> "earlycon" is needed only for an *early* console. You don't need any command
> line parameters for a normal console to work with SPCR.

That's true on ARM64. I specifically did not enable the console by default on
x86. There are users who do not want a console active during boot & runtime.

P.

>