Date: Tue, 4 Feb 1997 20:24:12 -0500 From: "David S. Miller" <davem@jenolan.rutgers.edu> To: nate@mt.sri.com Cc: julian@whistle.com, toor@dyson.iquest.net, michaelh@cet.co.jp, freebsd-smp@freebsd.org Subject: Re: [?] TLB Flushing on Context Switch PPro vs. Pentium Message-ID: <199702050124.UAA03391@jenolan.caipgeneral> In-Reply-To: <199702050105.SAA09082@rocky.mt.sri.com> (message from Nate Williams on Tue, 4 Feb 1997 18:05:24 -0700 (MST))
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Date: Tue, 4 Feb 1997 18:05:24 -0700 (MST) From: Nate Williams <nate@mt.sri.com> > I believe linux now does this. I know Linus toyed with this, but ended up going back due to bugs in many Pentium chips. (My Pentium will not work with 4MB pages, and it's a P100 w/out the FDIV bug.) Ifdef'd out by default in 2.0.x, if enabled in that code it can then be dynamically disabled via the mem=nopentium boot time command line option. In 2.1.x it is completely enabled.
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