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To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
From: Paul Lalonde <plalonde@telus.net>
Date: Tue,  6 Nov 2007 09:24:07 -0800
Subject: [9fans] Memory management questions/not plan-9 specific
Topicbox-Message-UUID: eb5dc12e-ead2-11e9-9d60-3106f5b1d025

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I have an application I'm building which requires OS support to allow  
a user-space function to fill a page on page-faults.  Ideally, I  
could reserve a chunk of address space but not back it with memory,  
and then on fault my handler would serve out data from some small  
cache of user-managed physical pages.

My google-fu has been weak in finding such a system-level API in any  
OS.  Has this got a name I should be searching on?  I can't believe  
no-one has implemented user-level page replacement.

Thanks,
    Paul

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