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

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Message-Id: <20110530130123.58153ec5.rdunlap@xenotime.net>
Date:	Mon, 30 May 2011 13:01:23 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	Arnd Bergmann <arnd@...db.de>, linux-kbuild@...r.kernel.org
Cc:	David Woodhouse <dwmw2@...radead.org>,
	John Stultz <john.stultz@...aro.org>,
	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 20:40:55 +0200 Arnd Bergmann wrote:

> On Monday 30 May 2011 19:27:31 Randy Dunlap wrote:
> > On Mon, 30 May 2011 13:05:58 +0200 Arnd Bergmann wrote:
> > 
> > Ingo recently wrote:
> > | When it wont boot straight away (often it does) i use a 
> > | Kconfig-needed set of minimal set of configs that enables the minimal 
> > | hardware environment.
> > 
> > which I believe is the same method that is documented in
> > Documentation/kbuild/kconfig.txt, subject "KCONFIG_ALLCONFIG": (partial text)
> > 
> > This enables you to create "miniature" config (miniconfig) or custom
> > config files containing just the config symbols that you are interested
> > in.  Then the kernel config system generates the full .config file,
> > including symbols of your miniconfig file.
> > 
> > This 'KCONFIG_ALLCONFIG' file is a config file which contains
> > (usually a subset of all) preset config symbols.  These variable
> > settings are still subject to normal dependency checks.
> > 
> 
> Very nice, I didn't know about it. Unfortunately, this seems to
> suffer from the same problem as the generic "randconfig" -- it
> ignores all "choice" statements and just uses the default:
> 
> Try for instance
> 
> KCONFIG_ALLCONFIG=arch/arm/configs/omap2plus_defconfig make \
> 	O=obj-allmod/ allnoconfig ARCH=arm
> 
> This is supposed to set CONFIG_ARCH_OMAP, but it instead chooses
> CONFIG_ARCH_VERSATILE, which means it's still useless for me.

baa humbug.

dear linux-kbuild, can "choice" choices be made random during
"make randconfig", please?

---
~Randy
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