linux-kernel - Re: [PATCH] bootup: Add built-in kernel command line for x86

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Message-ID: <489A2A24.6010400@zytor.com>
Date:	Wed, 06 Aug 2008 15:48:04 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Tim Bird <tim.bird@...sony.com>
CC:	Robert Schwebel <r.schwebel@...gutronix.de>,
	linux kernel <linux-kernel@...r.kernel.org>,
	linux-embedded <linux-embedded@...r.kernel.org>,
	Matt Mackall <mpm@...enic.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] bootup: Add built-in kernel command line for x86

Tim Bird wrote:
> 
> One difficulty is that the other arches' command lines
> are not currently "broken", so there's no real incentive
> to change them.
> 
> The only thing novel thing I'm adding here is the addition of
> the leading '!' to allow for an override.  This is needed
> in some x86 cases I'm familiar with, but I've haven't seen
> any cases where it would be useful for other arches.
> (not to say they don't exist - I just haven't seen them.)
> 

Note that it could just as easily be done with a CONFIG_CMDLINE_OVERRIDE 
option, since the initial reason for a magic character was to be able to 
provide both prefix and suffix splicing.

CONFIG_CMDLINE_OVERRIDE is probably more palatable to other architectures.

	-hpa
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