Message-ID: <4374DA3D.6050704@shadowen.org>
Date: Fri, 11 Nov 2005 17:51:57 +0000
From: Andy Whitcroft <apw@shadowen.org>
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To: Anton Blanchard <anton@samba.org>
CC: akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Allow flatmem to be disabled when only sparsemem is implemented
References: <20051111160341.GK14770@krispykreme>
In-Reply-To: <20051111160341.GK14770@krispykreme>
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Anton Blanchard wrote:

> On architectures that implement sparsemem but not discontigmem we want
> to be able to hide the flatmem option in some cases. On ppc64 for
> example, when we select NUMA we must not select flatmem.
> 
> Signed-off-by: Anton Blanchard <anton@samba.org>

First reaction is that this is very reasonable.  I can see why you need
to do this as you don't have DISCONTIGMEM.  I will just go check the
major architectures and make sure they arn't relying on being able to
enable SPARSEMEM and getting FLATMEM too behaviour.  I don't think they
can be as they all have DISCONTIGMEM and so should be insulated.

-apw
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