linux-kernel - Re: [Xen-devel] [PATCH] kernel-parameters: document earlycon=xenboot

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Message-ID: <CABZSBQeHGRe0pa49UA76++YiGFqdb6GuqHCCEbnuhD5LHjJz8w@mail.gmail.com>
Date:	Tue, 5 Apr 2016 17:22:07 -0400
From:	Chris Patterson <cjp256@...il.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:	Jonathan Corbet <corbet@....net>, xen-devel@...ts.xenproject.org,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [Xen-devel] [PATCH] kernel-parameters: document earlycon=xenboot

On Tue, Apr 5, 2016 at 12:42 PM, Konrad Rzeszutek Wilk
<konrad.wilk@...cle.com> wrote:
> On Tue, Apr 05, 2016 at 11:43:36AM -0400, Chris Patterson wrote:
>> On Tue, Apr 5, 2016 at 9:49 AM, Konrad Rzeszutek Wilk
>> <konrad.wilk@...cle.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.
>
> Perhaps the documentation should also have [ARM], like some of the
> other ones?

Absolutely.  I will test some combinations and be explicit about what
should work in v2.  Thanks for the feedback.

Cheers,
-Chris