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From: Chris Patterson <cjp256@gmail.com>
Date: Tue, 5 Apr 2016 11:43:36 -0400
Message-ID: <CABZSBQdyVhaDS+Ry0hWbj0ZDn1tH_Wm-NoCs-oPGy0TTzgXtXA@mail.gmail.com>
Subject: Re: [Xen-devel] [PATCH] kernel-parameters: document earlycon=xenboot
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Jonathan Corbet <corbet@lwn.net>, xen-devel@lists.xenproject.org,
        Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
        linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org
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On Tue, Apr 5, 2016 at 9:49 AM, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com> wrote:
> On Mon, Apr 04, 2016 at 10:48:11PM -0400, Chris Patterson wrote:
>> Add earlycon=xenboot option to Documentation/kernel-parameters.txt.
>>
>
> But it is not true.
>
> I tried this on x86: "earlycon=xenboot console=tty0"
>

I can investigate further, but hopefully Stefano can chime in more
definitively on what is supported.

I used "earlycon=xenboot console=hvc0" with success for dom0 on my
ARM64 platform.