From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from pizda.ninka.net (pizda.ninka.net [216.101.162.242]) by dsl2.external.hp.com (Postfix) with ESMTP id B5CBA4829 for ; Sat, 8 Mar 2003 12:26:33 -0700 (MST) Date: Sat, 08 Mar 2003 11:04:59 -0800 (PST) Message-Id: <20030308.110459.35972945.davem@redhat.com> To: grundler@dsl2.external.hp.com Cc: jsm@udlkern.fc.hp.com, parisc-linux@lists.parisc-linux.org Subject: Re: [parisc-linux] Re: RFC: mmap patch From: "David S. Miller" In-Reply-To: <20030308172439.GA10161@dsl2.external.hp.com> References: <20030308063043.GB27859@dsl2.external.hp.com> <20030307.222945.32673395.davem@redhat.com> <20030308172439.GA10161@dsl2.external.hp.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Sender: parisc-linux-admin@lists.parisc-linux.org Errors-To: parisc-linux-admin@lists.parisc-linux.org List-Help: List-Post: List-Subscribe: , List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: From: grundler@dsl2.external.hp.com (Grant Grundler) Date: Sat, 8 Mar 2003 10:24:39 -0700 After getting some sleep and thinking about how IOMMUs work on parisc, I've convinced myself the CPU caches are virtually tagged and virtually indexed. Some quick googling suggests that they are physically tagged. For example, see section 1.1 of the following paper: http://www.cs.washington.edu/homes/bershad/Papers/asplosVM.ps It's an interesting paper btw too :-)