linux-kernel - Re: [PATCH 0/5] introduce K64BIT=y and backward compatibility ARCH={i386,x86

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Message-Id: <20071110143302.73b571d6.randy.dunlap@oracle.com>
Date:	Sat, 10 Nov 2007 14:33:02 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	Jeff Garzik <jeff@...zik.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 0/5] introduce K64BIT=y and backward compatibility
 ARCH={i386,x86_64} for x86

On Sat, 10 Nov 2007 21:40:38 +0100 Sam Ravnborg wrote:

> As discussed in another thread the right thing is to add a generic solution
> to select between 32 and 64 bit - useable for powerpc, s390, ppc et al.
> 
> First step was to teach kconfig how to force 64BIT to a specific value.
> The x86 Kconfig file needed a small twist to use 64BIT as the symbol
> to seelct 32 or 64 bit.
> Then it was simple to add backward compatibility ARCH= settings.
> 
> The patchset is not yet pushed out - I will await a bit feedback first.
> 
> Shortlog and diffstat.
>       kconfig: factor out code in confdata.c
>       kconfig: use $K64BIT to set 64BIT with all*config targets
>       x86: Use CONFIG_64BIT to select between 32 and 64 bit in Kconfig
>       kconfig: document make K64BIT=y in README
>       x86: introduce ARCH=i386,ARCH=x86_64 to select 32/64 bit

Hi Sam,
Looks good to me and should satisfy our habits^w usages models.

The one minor question is the environment variable name (K64BIT or
something else, like Guillaume brought up).  Personally I don't
care how it's spelled.  IOW, K64BIT is sufficient, but if there is a
goal to be able to place any CONFIG_symbol on the command line or
as an env. variable, they might as well all be named with CONFIG_*.

Thanks,
---
~Randy
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