From owner-cvs-all Tue Feb 4 17:53:34 2003 Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0261037B401 for ; Tue, 4 Feb 2003 17:53:33 -0800 (PST) Received: from mail26a.sbc-webhosting.com (mail26a.sbc-webhosting.com [216.173.237.36]) by mx1.FreeBSD.org (Postfix) with SMTP id 3AE9043FB9 for ; Tue, 4 Feb 2003 17:53:32 -0800 (PST) (envelope-from alc@imimic.com) Received: from www.imimic.com (64.143.12.21) by mail26a.sbc-webhosting.com (RS ver 1.0.63s) with SMTP id 063589; Sun, 2 Feb 2003 02:11:29 -0500 (EST) Message-ID: <3E3CC4A1.BBFD203A@imimic.com> Date: Sun, 02 Feb 2003 01:11:29 -0600 From: "Alan L. Cox" Organization: iMimic Networking, Inc. X-Mailer: Mozilla 4.8 [en] (X11; U; Linux 2.4.2 i386) X-Accept-Language: en MIME-Version: 1.0 To: "Justin T. Gibbs" Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/i386/i386 identcpu.c initcpu.c locore.s References: <20030125021907.51B482A89E@canning.wemm.org> <3E32F7C2.C251040@imimic.com> <14020000.1044124868@aslan.scsiguy.com> Content-Type: text/plain; charset=x-user-defined Content-Transfer-Encoding: 7bit X-Loop-Detect: 1 Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG "Justin T. Gibbs" wrote: > > > Does anyone here know what needs to be done in terms of saving and > > restoring SSE/SSE2 state in order to use non-temporal, i.e., not-cached, > > stores in the idle time page zeroing code? > > I don't know if he used SSE/SSE2 or not, but thorpej modified NetBSD's > page zeroing code to avoid touching the cache well over a year ago. > You might look at what they are doing. > I just looked at a NetBSD's sys/arch/i386/i386/pmap.c. pmap_pageidlezero() didn't use SSE/SSE2. Am I looking in the wrong place? Alan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message