From owner-freebsd-hackers@FreeBSD.ORG Mon Jun 29 01:03:50 2009 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 645041065674 for ; Mon, 29 Jun 2009 01:03:50 +0000 (UTC) (envelope-from nhoyle@hoyletech.com) Received: from mout.perfora.net (mout.perfora.net [74.208.4.194]) by mx1.freebsd.org (Postfix) with ESMTP id 3046A8FC19 for ; Mon, 29 Jun 2009 01:03:49 +0000 (UTC) (envelope-from nhoyle@hoyletech.com) Received: from [192.168.1.10] (pool-96-231-140-65.washdc.fios.verizon.net [96.231.140.65]) by mrelay.perfora.net (node=mrus0) with ESMTP (Nemesis) id 0MKp8S-1ML5Hg0HVe-000SSE; Sun, 28 Jun 2009 21:03:49 -0400 Message-ID: <4A4812F0.2080208@hoyletech.com> Date: Sun, 28 Jun 2009 21:03:44 -0400 From: Nathanael Hoyle User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) MIME-Version: 1.0 To: freebsd-hackers@freebsd.org References: <4A480760.50705@hoyletech.com> <20090629003522.GA18543@britannica.bec.de> In-Reply-To: <20090629003522.GA18543@britannica.bec.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V01U2FsdGVkX19nMwxvmrS8MKNuSAb3uweNpDWkYQZjwo901e3 gn3ObL8qt7hlh9OBW5VsaeZB51Zh7jS7wVaVIvvhdBhOS5Dau4 Ws5JllidRvQaiTT1FoqsU76rSQg+/BQ Subject: Re: large pages (amd64) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Jun 2009 01:03:51 -0000 Joerg Sonnenberger wrote: > On Sun, Jun 28, 2009 at 08:14:24PM -0400, Nathanael Hoyle wrote: > >> Just to be clear, since you say i386 (I presume you mean architecture), >> I believe the Physical Address Extensions which allowed 2MB Page Size >> bit to be set was introduced with Pentium Pro. Processors prior to this >> were limited to standard 4KB pages. >> > > PSE != PAE != PSE36. Pentium Pro sounds about right though. > > Joerg > Thanks for the clarification/correction. PSE does not depend on PAE, though both were introduced at roughly the same time (appears PSE was introduced silently in Pentium, officially in Pentium Pro). I definitely wasn't thinking of PSE36, which was the Pentium III. -Nathanael