From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 6 Aug 2002 17:02:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 6 Aug 2002 17:00:59 -0400 Received: from e35.co.us.ibm.com ([32.97.110.133]:60109 "EHLO e35.co.us.ibm.com") by vger.kernel.org with ESMTP id ; Tue, 6 Aug 2002 17:00:37 -0400 Content-Type: text/plain; charset=US-ASCII From: Hubertus Franke Reply-To: frankeh@watson.ibm.com Organization: IBM Research To: "Luck, Tony" , "Seth, Rohit" , Linus Torvalds Subject: Re: large page patch (fwd) (fwd) Date: Tue, 6 Aug 2002 17:03:24 -0400 User-Agent: KMail/1.4.1 Cc: linux-kernel@vger.kernel.org References: <39B5C4829263D411AA93009027AE9EBB1329958F@fmsmsx35.fm.intel.com> In-Reply-To: <39B5C4829263D411AA93009027AE9EBB1329958F@fmsmsx35.fm.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Message-Id: <200208061703.24465.frankeh@watson.ibm.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 06 August 2002 04:38 pm, Luck, Tony wrote: > > > 4GB TLB entry size ??? > > > > I assume you mean 4MB TLB entry size or did I fall > > into a coma for 10 years > > That wasn't a typo ... Itanium2 supports page sizes up > to 4 Gigabytes. Databases (well, Oracle for sure) want > to use those huge TLB entries to map their multi-gigabyte > shared memory areas. > > -Tony Whooooowww... Power4 I believe opted out at 16MB. So the story about sleeping beauty is true :-). Wouldn't want to manage the 8-32 physical pages of memory through the VM. Paging not an option, file access irrelevant. In that case I agree that it should be handled by a special purpose extension like Seth's patch to cover a 4GB page. Upto 4MB or so I still believe going the other way is proper. More later... thanks for the info. -- -- Hubertus Franke (frankeh@watson.ibm.com)