linux-kernel - Re: [PATCH] x86: simplify HIGHMEM-related Kconfig entries

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Message-ID: <20090116211849.GB10063@elte.hu>
Date:	Fri, 16 Jan 2009 22:18:49 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Jan Beulich <jbeulich@...ell.com>, tglx@...utronix.de,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: simplify HIGHMEM-related Kconfig entries


* H. Peter Anvin <hpa@...or.com> wrote:

> Jan Beulich wrote:
>>> If so, what would be the difference between HIGHMEM4G and HIGHMEM64G in
>>> that case at all?
>>
>> For example being able to select the DMADEVICES config option.
>
> WTF?!  Why would DMA device support be banned on HIGHMEM64G?  That makes 
> no sense whatsoever...

yes - but i guess the point is that there is some assymetry there which 
needs to be investigated and fixed.

	Ingo
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