linux-kernel - Re: [PATCH][RESEND] x86: Do not write to VGA memory space if CONFIG_VGA

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Date:	Tue, 6 Apr 2010 13:37:09 -0700
From:	Guenter Roeck <guenter.roeck@...csson.com>
To:	hpa@...or.com, linux-kernel@...r.kernel.org
CC:	penberg@...helsinki.fi, mingo@...hat.com, x86@...nel.org
Subject: Re: [PATCH][RESEND] x86: Do not write to VGA memory space if
 CONFIG_VGA_CONSOLE is undefined

On Tue, 2010-04-06 at 16:17 -0400, H. Peter Anvin wrote:
[...]
> Therefore, the only sensible way to get the early messages out is really
> to push setup_early_printk() as early as possible.
> 
I agree. I am already testing a patch which does exactly that. I should
have it ready for review either later today or tomorrow.

On the plus side, it shows several additional early messages on the
serial console, including the linux version and the command line.

On the downside, I removed the "Kernel alive" message. I don't think
that really makes a difference, though, since I do not see how
console_loglevel can be 10 or higher by the time the message is supposed
to be generated.

Guenter


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