From owner-freebsd-current@FreeBSD.ORG Mon Nov 22 13:08:24 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 41D4B1065697 for ; Mon, 22 Nov 2010 13:08:24 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 13B8C8FC1A for ; Mon, 22 Nov 2010 13:08:24 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id A07B146B1A; Mon, 22 Nov 2010 08:08:23 -0500 (EST) Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id C37088A027; Mon, 22 Nov 2010 08:08:16 -0500 (EST) From: John Baldwin To: freebsd-current@freebsd.org Date: Mon, 22 Nov 2010 07:59:16 -0500 User-Agent: KMail/1.13.5 (FreeBSD/7.3-CBSD-20101102; KDE/4.4.5; amd64; ; ) References: <1290387926.16558.1283.camel@home-yahoo> In-Reply-To: <1290387926.16558.1283.camel@home-yahoo> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <201011220759.16082.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6 (bigwig.baldwin.cx); Mon, 22 Nov 2010 08:08:16 -0500 (EST) X-Virus-Scanned: clamav-milter 0.96.3 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-1.9 required=4.2 tests=BAYES_00 autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on bigwig.baldwin.cx Cc: Sean Bruno Subject: Re: 40 vs 44 bit memory addressing HP DL580/980 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Nov 2010 13:08:24 -0000 On Sunday, November 21, 2010 8:05:26 pm Sean Bruno wrote: > Looks like these HP boxes have the capability to do 44 bit memory > addressing if configured to do so from the BIOS. > > Is anyone interested in any data from that setting? Does it boot ok? :) The MTRR code should handle that (there is a CPUID field that tells the OS how many bits are significant). Not sure if there are any places in the pmap that assume 40 bits, but a test boot is certainly worth trying. -- John Baldwin