Return to BSD News archive
#! rnews 1913 bsd Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!spool.mu.edu!howland.reston.ans.net!swrinde!cs.utexas.edu!math.ohio-state.edu!usc!elroy.jpl.nasa.gov!news.msfc.nasa.gov!newsfeed.internetmci.com!in2.uu.net!bigmac1.mcd.com!uunet!inXS.uu.net!zdc!zdc-e!szdc-e!news From: "John S. Dyson" <toor@dyson.iquest.net> Newsgroups: comp.unix.bsd.freebsd.misc,comp.unix.bsd.netbsd.misc Subject: Re: Curious about *BSD History Date: Tue, 02 Jul 1996 22:38:41 -0500 Organization: John S. Dyson's home machine Lines: 31 Message-ID: <31D9EB41.41C67EA6@dyson.iquest.net> References: <4k1nue$lm8@orb.direct.ca> <31D0A2C9.72741EA8@lambert.org> <4qs2ag$bg0@pier2.bayarea.net> <31D29460.41C67EA6@inuxs.att.com> <4rbql3$ges@pier2.bayarea.net> <31D9789E.41C67EA6@inuxs.att.com> <31D9AE36.3993D656@lambert.org> NNTP-Posting-Host: dyson.iquest.net Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.0b5Gold (X11; I; FreeBSD 2.2-CURRENT i386) Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:22793 comp.unix.bsd.netbsd.misc:3922 Terry Lambert wrote: > > John S. Dyson wrote: > > ] FreeBSD has added optional pmap entry points to support > ] microcoded TLB's better. > > This hurts, I think, in the non-microcoded TLB case (Alpha, PPC). > I wouldn't know why, because all we do is supply an empty subroutine then. (Of course, we COULD ifdef it -- just haven't had to worry about THAT yet.) > > ] We have other LL optimization entry points that are purely > ] optional to implement. > > There is some question about how this is optioned. > Empty subroutines, like pmap_copy originally was. > > I've had a hard time tracking the rapid VM changes without a > scorecard was my only point, and the suggested use of the > TSS in the SMP case is what had me up in arms at all. > I have had a hard time creating them :-). John