Date: Tue, 04 Feb 1997 12:41:58 -0800 From: Julian Elischer <julian@whistle.com> To: "John S. Dyson" <toor@dyson.iquest.net> Cc: Michael Hancock <michaelh@cet.co.jp>, freebsd-smp@freebsd.org Subject: Re: [?] TLB Flushing on Context Switch PPro vs. Pentium Message-ID: <32F79F16.41C67EA6@whistle.com> References: <199702041147.GAA05042@dyson.iquest.net>
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John S. Dyson wrote: > > > The PPro doesn't automatically flush the TLB on context switch like the > > Pentium did. What else does the PPro do differently? > > > On the non-SMP kernel, we specifically set the PG_G flag that > keeps the kernel pages in the TLB on PPro. I have also been > playing with the idea of using 4MB pages (which the P5 also > unofficially supports.) I believe linux now does this. > > John
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