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Date: Mon, 10 Jul 2006 08:56:50 -0700 (PDT)
From: Christoph Lameter <clameter@sgi.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
cc: linux-kernel@vger.kernel.org, mbligh@google.com, hch@infradead.org,
       marcelo@kvack.org, arjan@infradead.org, nickpiggin@yahoo.com.au,
       ak@suse.de
Subject: Re: [RFC 1/8] Add CONFIG_ZONE_DMA to all archesM
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On Mon, 10 Jul 2006, KAMEZAWA Hiroyuki wrote:

> 
> How about configuring this by
> 
> config ZONE_DMA
> 	def_bool y
> 	depends on GENERIC_ISA_DMA || ARCH_ZONE_DMA
> 
> and set ARCH_ZONE_DMA for each arch ?

Yes we do something like that in a later patch. What would be the 
advantage of having CONFIG_ARCH_ZONE_DMA instead of CONFIG_ZONE_DMA?