linux-kernel - Re: [PATCH] x86/x86_64_defconfig: Enable the serial console

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Message-ID: <20201012144040.GB11614@1wt.eu>
Date:   Mon, 12 Oct 2020 16:40:40 +0200
From:   Willy Tarreau <w@....eu>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Guillaume Tucker <guillaume.tucker@...labora.com>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Collabora Kernel ML <kernel@...labora.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Diego Elio Pettenò <flameeyes@...meeyes.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Nathan Chancellor <natechancellor@...il.com>,
        kernelci@...ups.io
Subject: Re: [PATCH] x86/x86_64_defconfig: Enable the serial console

On Mon, Oct 12, 2020 at 04:32:12PM +0200, Borislav Petkov wrote:
> On Mon, Oct 12, 2020 at 11:22:10AM +0100, Guillaume Tucker wrote:
> > However, it was found while adding some x86 Chromebooks[1] to
> > KernelCI that x86_64_defconfig lacked some basic things for
> > anyone to be able to boot a kernel with a serial console enabled
> > on those.
> 
> Hold on, those are laptops, right? How come they do have serial console?
> Because laptops don't have serial console - that has been the eternal
> problem with debugging kernels on laptops.

Well, to be precise, they don't have *anymore*. I used to exclusively
select laptops having a serial port given that I was using it daily with
routers, until I had to resign when I abandonned my good old NC8000 :-/

Willy