Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!lavaca.uh.edu!menudo.uh.edu!sugar!ficc!peter From: peter@ficc.ferranti.com (Peter da Silva) Newsgroups: comp.arch Subject: Re: Translating 64-bit addresses Message-ID: Date: 1 Mar 91 15:19:33 GMT References: <6590@hplabsz.HP.COM> <12151@pt.cs.cmu.edu> <1991Feb28.144420.21179@jarvis.csri.toronto.edu> Reply-To: peter@ficc.ferranti.com (Peter da Silva) Organization: Xenix Support, FICC Lines: 13 In article <1991Feb28.144420.21179@jarvis.csri.toronto.edu> jonah@dgp.toronto.edu (Jeff Lee) writes: > Making the index sparce helps, but you *still* need to create the > index for the portions of the data that you want to address. Putting > the index in a virtual space doesn't help very much; it means you can > swap it out, but you still have to construct and maintain the index... Can't you construct the index at page-fault time, if the structure is regular and predictable? (gives new depth to the term "virtual memory") -- Peter da Silva. `-_-' peter@ferranti.com +1 713 274 5180. 'U` "Have you hugged your wolf today?"