Date: Sun, 02 Feb 2003 01:11:29 -0600 From: "Alan L. Cox" <alc@imimic.com> To: "Justin T. Gibbs" <gibbs@scsiguy.com> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/i386/i386 identcpu.c initcpu.c locore.s Message-ID: <3E3CC4A1.BBFD203A@imimic.com> References: <20030125021907.51B482A89E@canning.wemm.org> <3E32F7C2.C251040@imimic.com> <14020000.1044124868@aslan.scsiguy.com>
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"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
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