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From: Terry Lambert <terry@lambert.org>
Newsgroups: comp.unix.bsd.freebsd.misc,comp.unix.bsd.netbsd.misc
Subject: Re: Curious about *BSD History
Date: Thu, 27 Jun 1996 21:42:03 -0700
Organization: Me
Lines: 25
Message-ID: <31D3629B.6A422060@lambert.org>
References: <4k1nue$lm8@orb.direct.ca> <317006C4.77C0450E@lambert.org> <4qkegg$9as@pier2.bayarea.net> <31D0A2C9.72741EA8@lambert.org> <4qs2ag$bg0@pier2.bayarea.net>
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Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:22306 comp.unix.bsd.netbsd.misc:3880
Jason R. Thorpe wrote:
] >I have to admit that I've been considering writing software
] >to make the MMU hardware pretend to be PC MMU hardware so I
] >can more easily track the FreeBSD VM changes on the PPC (I
] >known, I know, "evil incarnate").
]
] Ick! Why is there i386 MMU-specific stuff (or assumptions) in the
] FreeBSD VM code? All of that should live completely in pmap!
There are achitectural assumptions about what the hardware can
provide you. This is not the same thing as if there were
MMU-specific code or MMU-specific assumptions. They are MMU
service provision specific assumptions.
This is not the same thing.
The reason they are there is largely because I'm working from
the SMP code base.
Terry Lambert
terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.