linux-kernel - Re: [PATCH v2 9/9] serial: 8250_early: Support earlycon

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Message-ID: <20200427165013.yaikxelzilry3eaf@holly.lan>
Date:   Mon, 27 Apr 2020 17:50:13 +0100
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     jason.wessel@...driver.com, gregkh@...uxfoundation.org,
        kgdb-bugreport@...ts.sourceforge.net, mingo@...hat.com,
        hpa@...or.com, bp@...en8.de, linux-serial@...r.kernel.org,
        agross@...nel.org, tglx@...utronix.de, frowand.list@...il.com,
        bjorn.andersson@...aro.org, jslaby@...e.com,
        catalin.marinas@....com, corbet@....net, will@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 9/9] serial: 8250_early: Support earlycon_kgdboc

On Tue, Apr 21, 2020 at 02:14:47PM -0700, Douglas Anderson wrote:
> Implement the read() function in the early console driver.  With
> recent kgdb patches this allows you to use kgdb to debug fairly early
> into the system boot.
> 
> We only bother implementing this if polling is enabled since kgdb
> can't be enabled without that.
> 
> Signed-off-by: Douglas Anderson <dianders@...omium.org>

Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>