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

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Message-ID: <alpine.LFD.2.02.1105302103220.3164@localhost6.localdomain6>
Date:	Mon, 30 May 2011 21:12:17 +0100 (BST)
From:	David Woodhouse <dwmw2@...radead.org>
To:	Ted Ts'o <tytso@....edu>
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, 30 May 2011, Ted Ts'o wrote:

> So I could imagine two ways of doing this.  One would be a new file,
> .config-fixed, that contains a series of "CONFIG_XXX=[ymn]" which
> would have to be satisfied and which override what
> allyesconfig/allnoconfig/randconfig would otherwise do.

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.

And then this legacy trick of using the obsolete $ARCH settings to 
override the setting of CONFIG_64BIT can be deprecated.

-- 
dwmw2

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