Re: Another question about self-paging

[Paavo Parkkinen]

On Mon, 31.10.2005 at 09:31 -0500, Jonathan S. Shapiro wrote:
> On Mon, 2005-10-31 at 13:29 +0200, Paavo Parkkinen wrote:
> > On Sun, 30.10.2005 at 16:55 -0500, Jonathan S. Shapiro wrote:
> > > There is a meta-level problem with self-paging. It is predicated on the
> > > assumption that one application should be informed about pressures
> > > resulting from the behavior of other applications.
> > 
> > Why is this a problem?
> 
> Because any story about security begins with the goal that for any two
> process A and B, it should be possible to prevent communication from A
> to B. If B is asked to reduce its working set in response to an action
> by A, then communication has occurred.

I understand this completely. I just don't see how a demand to page
out a page is communication from a process A to a process B. To me it
seems like communicating about the state of the system to a process A.
Is this also forbidden? Why?

Paavo

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