Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754824AbXE3O17 (ORCPT ); Wed, 30 May 2007 10:27:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752190AbXE3O1w (ORCPT ); Wed, 30 May 2007 10:27:52 -0400 Received: from shawidc-mo1.cg.shawcable.net ([24.71.223.10]:20480 "EHLO pd2mo3so.prod.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752126AbXE3O1v (ORCPT ); Wed, 30 May 2007 10:27:51 -0400 Date: Wed, 30 May 2007 08:27:45 -0600 From: Robert Hancock Subject: Re: Kernel 2.6.21.3 does not work with 8GB of RAM on Intel 965WH motherboards. In-reply-to: To: Justin Piszcz Cc: linux-kernel@vger.kernel.org Message-id: <465D89E1.7030301@shaw.ca> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit References: <465CF8CA.8070009@shaw.ca> User-Agent: Thunderbird 2.0.0.0 (Windows/20070326) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 839 Lines: 25 Justin Piszcz wrote: > Kernel dmesg attached from 8GB bootup. It looks like part of the start of the output was truncated.. > Robert, how come the option is not applicable in 64-bit mode? If I want > to use all 8GB of memory I need to run a 32-bit kernel? > > Justin. > Highmem and PAE (which are essentially what the 4GB/64GB memory options control) are not needed in 64-bit mode, since we can access the entire 64-bit address space directly. -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/