From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3C33B37E.4050604@zytor.com> Date: Wed, 02 Jan 2002 17:27:26 -0800 From: "H. Peter Anvin" MIME-Version: 1.0 Subject: Re: Maximum physical memory on i386 platform References: <20020102222026.69416.qmail@web12304.mail.yahoo.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Ravi K Cc: kernelnewbies@nl.linux.org, linux-mm@kvack.org List-ID: Ravi K wrote: > Hi, > The configuration help for HIGHMEM feature on i386 > platform states that 'Linux can use up to 64 Gigabytes > of physical memory on x86 systems'. I see a problem > with this: > - page structures needed to support 64GB would take > up 1GB memory (64 bytes per page of size 4k) 64GB is physical memory, not virtual memory. -hpa -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/