From owner-freebsd-hackers@FreeBSD.ORG  Mon Jun 29 05:59:16 2009
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Date: Mon, 29 Jun 2009 00:59:07 -0500
From: Alan Cox <alc@cs.rice.edu>
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To: Nathanael Hoyle <nhoyle@hoyletech.com>
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Cc: alc@freebsd.org, Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>,
	freebsd-hackers@freebsd.org
Subject: Re: large pages (amd64)
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Nathanael Hoyle wrote:
[snip]
> Having been corrected by both you and Joerg (thank you!), I went back 
> to re-verify my understanding. It appears that while I was slightly 
> mixing PAE in with PSE, PSE support for 4MB pages was introduced 
> 'silently' with the Pentium, and documented first with the Pentium 
> Pro.  I haven't found anything that points to earlier inclusion. 
> Certainly the 80386 processor specifically, I am fairly confident 
> would be limited to the 4KB pages.
>
> Agreed? Or are you aware of earlier usage than the Pentium for 4MB pages?
>

Yes, I agree.  I'm not aware of 4MB page support before the Pentium.

Regards,
Alan