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Date: Tue, 17 Jan 2006 16:31:35 -0600
From: Alan Cox <alc@cs.rice.edu>
To: Poul-Henning Kamp <phk@phk.freebsd.dk>
Message-ID: <20060117223135.GB2360@cs.rice.edu>
References: <43CD612E.2060002@elischer.org>
	<63333.1137536336@critter.freebsd.dk>
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Cc: alc@freebsd.org, Julian Elischer <julian@elischer.org>, arch@freebsd.org
Subject: Re: Large virtual page size support.
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On Tue, Jan 17, 2006 at 11:18:56PM +0100, Poul-Henning Kamp wrote:
> In message <43CD612E.2060002@elischer.org>, Julian Elischer writes:
> >Jeff Roberson wrote:
> >
> >> I have implemented support in the vm for PAGE_SIZE values which are a 
> >> multiple of the hardware page size.  This is primarily useful for two 
> >> things:
> >
> >Mach (and the VM system we inherrited from it) had this. I beieve it was 
> >removed with teh comment
> >"If we need this and someone is willing to support it it can be added 
> >back" .
> 
> It was a VAX artifact and not very usable.  I belive we have a couple
> of comments and macros which still talk about "clicks".
> 

It was not a VAX artifact.  Also, Jeff's work differs significantly
from what Mach did on the VAX.  I'll explain the differences after
my paper deadline passes tomorrow.

Alan