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Date: Tue, 04 Feb 1997 12:41:58 -0800
From: Julian Elischer <julian@whistle.com>
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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
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