Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965624AbWIRJv6 (ORCPT ); Mon, 18 Sep 2006 05:51:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751630AbWIRJv6 (ORCPT ); Mon, 18 Sep 2006 05:51:58 -0400 Received: from wx-out-0506.google.com ([66.249.82.235]:40745 "EHLO wx-out-0506.google.com") by vger.kernel.org with ESMTP id S1750744AbWIRJv6 (ORCPT ); Mon, 18 Sep 2006 05:51:58 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=WieM21qbn3UDK5xTv8hVb7k/9sm0raIEPRQXv+k/k62RVL5qNdTycclwlBS3VG1ZXb+0Bqs5prfz9xG+6rKbd9GiDiQhgXfgoLYvzTaBPSPyzoEWZSuIafQ8IcYUo1vQJ0BNYwqtjtRt49wmK7KxbGTVWY8P9fQ1ma7oMbmPR4E= Message-ID: Date: Mon, 18 Sep 2006 15:21:57 +0530 From: "yogeshwar sonawane" To: linux-kernel Subject: Re: How much kernel memory is in 64-bit OS ? In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 928 Lines: 31 On 9/16/06, yogeshwar sonawane wrote: > Hi all, > > We all know that in 32-bit OS, total 4GB memory space is divided in > 3(user) + 1(kernel) space. > > Similarly, what is the division/scenario in case of 64-bit OS ? > > Any reference/explanation will be helpful. > > thanks in advance. > > > Yogeshwar > On similar lines, some time back, i read that, to accomodate large physical memory , the 3G/1G layout is modified to have 4G/4G partition. But if somebody can focus the light on following things, it will be helpful. 1) what was the requirement of 4G/4G layout ? 2) how it is managed ? 3) how HIGH_MEMORY concept is related here. Thanks in advance, Yogeshwar - 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/