From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailserv2.iuinc.com (qmailr@mailserv2.iuinc.com [206.245.164.55]) by sod.res.cmu.edu (8.8.7/8.8.7) with SMTP id JAA00638 for ; Mon, 22 Mar 1999 09:11:21 -0500 Received: (from neufeld@localhost) by caliban.physics.utoronto.ca (8.9.2/8.8.8) id JAA18643 for hppa-linux@thepuffingroup.com; Mon, 22 Mar 1999 09:11:15 -0500 (EST) Date: Mon, 22 Mar 1999 09:11:15 -0500 (EST) From: Christopher Neufeld Message-Id: <199903221411.JAA18643@caliban.physics.utoronto.ca> To: hppa-linux@thepuffingroup.com Subject: [hppa-linux] Picky details of TLB fault handlers List-ID: Here's a question probably best suited for the folks at HP. The PA-RISC 2.0 documentation says that a (software) TLB miss fault handler cannot use virtual addressing. OK, what constitutes an exit from the handler? Can you use virtual addressing after the last modification the handler makes to the TLB (perhaps after executing several instructions which don't require virtual addressing to load the pipeline), or do you have to execute an explicit return from interrupt? -- Christopher Neufeld neufeld@physics.utoronto.ca Home page: http://caliban.physics.utoronto.ca/neufeld/Intro.html "Don't edit reality for the sake of simplicity"