linux-kernel - Re: [patch] x86: allow ZONE

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Message-ID: <4CB7240E.9000905@zytor.com>
Date:	Thu, 14 Oct 2010 08:38:54 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Casey Dahlin <cdahlin@...hat.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch] x86: allow ZONE_DMA to be configurable

On 10/13/2010 09:46 PM, David Rientjes wrote:
> 
> I'm not running a CONFIG_EMBEDDED kernel and I'm pretty sure Casey isn't 
> either, so we'd still need to carry our own patches to change the Kconfig 
> bool line anyway.
> 
> I'm suprised that we can't allow users who definitively know that they 
> have no hardware limitations the ability to disable ZONE_DMA.  Would a 
> strong caution in the Kconfig "help" text suffice or will you not be 
> convinced?

CONFIG_EMBEDDED *is* "I am a user who (think I) know what I'm doing".
That is *what it is* and *all it is*.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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