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Path: sserve!newshost.anu.edu.au!munnari.oz.au!spool.mu.edu!howland.reston.ans.net!math.ohio-state.edu!cs.utexas.edu!uunet!mcsun!sunic!isgate!veda.is!adam From: adam@veda.is (Adam David) Newsgroups: comp.os.386bsd.bugs Subject: Re: kernel writes to user space (was Re: Nethack) Message-ID: <C9GMzD.B6@veda.is> Date: 1 Jul 93 00:35:22 GMT References: <20bfrm$le7@pdq.coe.montana.edu> <C990xF.43n@sneaky.lonestar.org> <1993Jun29.181749.5833@fcom.cc.utah.edu> <20qqgu$dj@werple.apana.org.au> <1993Jun30.022629.24466@uvm.edu> Organization: Veda Systems, Iceland Lines: 13 wollman@trantor.emba.uvm.edu (Garrett Wollman) writes: >Isn't there a flag bit you can turn on on a *4*86, which tells the MMU >to behave in a sane manner? If so, then perhaps someone ought to >write code to take advantage of this, triggered by defined(i486) && >!defined(i386). i486 is a superset of i386, so it does not make much sense to define i486 without also defining i386. Therefore defined(i486) should be enough of a test. -- adam@veda.is