linux-kernel - Re: [PATCH] Fix corruption of CONFIG_X86

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Message-ID: <20110531014418.GI2890@dhcp-172-31-194-241.cam.corp.google.com>
Date:	Mon, 30 May 2011 21:44:18 -0400
From:	Ted Ts'o <tytso@....edu>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix corruption of CONFIG_X86_32 in 'make oldconfig'

On Mon, May 30, 2011 at 09:12:17PM +0100, David Woodhouse wrote:
> 
> Which is apparently what KCONFIG_ALLCONFIG already does? It doesn't work 
> for choices, but it's still fine for setting/clearing CONFIG_64BIT.
>  
> We'll want to make it simpler to use - so you really can do something like
>    make CONFIG_64BIT=n randconfig
>    make CONFIG_64BIT=n allmodconfig
>    make CONFIG_64BIT=y CONFIG_SATA_MV=y oldconfig
> etc. without having to create a text file. But that's not hard. A simple 
> implementation might just *make* a file with the options on the command 
> line and point KCONFIG_ALLCONFIG at it to start with, although there are 
> probably cleaner ways to implement it.

On some architectures, I suspect there will be a dozen or more CONFIG
that have to be a certain way in order for the machine to boot.  Are
you really going to want to put them all on the command line?

I suppose the question is whether people are using randconfig for
simple compile testing, or just for something that they actually try
to boot, either on real hardware or on a KVM system.  I was under the
impression Ingo and others actually tried to boot their randconfig
kernels, correct?

    	   	    	    	     	 - Ted
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