linux-kernel - Re: PAGE_SIZE on 64bit and 32bit machines

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Message-ID: <47386DC9.4020905@gmail.com>
Date:	Mon, 12 Nov 2007 16:14:17 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Yoav Artzi <yoavar@...ckpoint.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: PAGE_SIZE on 64bit and 32bit machines

On 11/12/2007 03:39 PM, Yoav Artzi wrote:
> According to my knowledge the PAGE_SIZE on 32bit architectures in 4KB.
> Logically, the PAGE_SIZE on 64bit architectures should be 8KB. That's at
> least the way I understand it. However, looking at the kernel code of
> x86_64, I see the PAGE_SIZE is 4KB.

Yes, it stood unchanged, the only difference is 4-level page tables.

> Can anyone explain to me what am I missing here?

What led you to that it must be 8k?

regards,
-- 
Jiri Slaby (jirislaby@...il.com)
Faculty of Informatics, Masaryk University
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