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From: Neal H. Walfield
Subject: Re: VMM
Date: 15 Oct 2002 14:05:09 -0400
User-agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.2

> > This is cover in the L4 spec.
> Excellent. Did I miss that when I read the spec many months ago, or is
> it a new feature?

If you call "unmap" on an fpage without changing the access bits
(i.e. rwx = 0) then the page is not unmapped and the dirty and access
bits are returned.  See section 4.2 entitled "Unmap" of the X.2
reference manual.

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