linux-kernel - Re: [PATCH] Make LIST

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Message-ID: <4831845F.6030904@qumranet.com>
Date:	Mon, 19 May 2008 16:45:03 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	Sam Ravnborg <sam@...nborg.org>
Subject: Re: [PATCH] Make LIST_POISON less deadly

Ingo Molnar wrote:
> i'd suggest to add an ARCH_ILLEGAL_POINTER define instead, which 
> defaults to zero and gets added to pointer-ish poison values. That makes 
> it both simpler and also it does not need any include/asm changes 
> because ARCH_ILLEGAL_POINTER can be set from the Kconfig space.
>   

Any idea how to override a value in Kconfig?  We can do it for bool 
values but not strings.

e.g.

lib/Kconfig:
  config ILLEGAL_POINTER_VALUE
      hex
      default 0

arch/x86/Kconfig:
  config X86
    select ILLEGAL_POINTER_VALUE=0x80000000000000000000000000 if X86_64

?

I could do it with a boolean signifying existence and a hex for the 
value, but I'd rather not.

-- 
error compiling committee.c: too many arguments to function

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