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Date: Wed, 25 Apr 2007 08:33:10 +0200
From: "Tuncer Ayaz" <tuncer.ayaz@gmail.com>
To: "Cestonaro, Thilo (external)" 
	<Thilo.Cestonaro.external@fujitsu-siemens.com>
Subject: Re: NonExecutable Bit in 32Bit
Cc: linux-kernel@vger.kernel.org
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On 4/25/07, Cestonaro, Thilo (external)
<Thilo.Cestonaro.external@fujitsu-siemens.com> wrote:
> Hey,
>
> > CONFIG_HIGHMEM64G=y
> > CONFIG_HIGHMEM=y
> > CONFIG_X86_PAE=y
>
> Ok in highmem it's active, whats about lowmem?
> x86-64 is NX active for lowmem too AFAIK.

It's more of an issue of having PAE enabled.
Without PAE you are not able to use the the NX bit.
That's the way the CPU works, not Linux.

Hope this helps.