linux-kernel - Linux kernel memory and split on 64-bit machines

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Message-ID: <4725C1EB.10205@checkpoint.com>
Date:	Mon, 29 Oct 2007 13:20:11 +0200
From:	Yoav Artzi <yoavar@...ckpoint.com>
To:	linux-kernel@...r.kernel.org
Subject: Linux kernel memory and split on 64-bit machines

Hi,

I am researching now about the Linux kernel memory on 64-bit (x86_64) 
machines. I am looking into answering the following questions:

1. Is there a user-kernel split on 64-bit memories? If so, how is it 
done? What is the size of each part?

2. Does kernel high memory exists on 64-bit machines?

3. How is it possible to detect in runtime the split and the size of the 
physical memory?

Thanks,

Yoav

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