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Re: [Xen-devel] one more question on ethernet front end

To: ron minnich <rminnich@xxxxxxxx>
Subject: Re: [Xen-devel] one more question on ethernet front end
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Wed, 01 Sep 2004 20:58:52 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxxx
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The frames you get from the receive ring are not necessarily the ones
you removed from your memory reservation. i.e., you will be replacing
with different pages.

 -- Keir

PS. Try to stick close to the Linxu device drivers as much as possible
-- the mechanism for granting foreign access to your pages, and for
accepting page transfers from other foreign domains, will be changing
soon (it's rather fast and loose at the moment). It'll be nice if you
can take a patch directly from our Linux tree. 

> If my domain loans a page out and then reduces its reservation, is it safe 
> to assume that when that page appears in the rx ring as a result that it 
> will be one of the ones I loaned out? in other words, do pages I return to 
> Xen for use in the rx ring get replaced by other pages, or do they come 
> back to me when they are full of data?
> 
> thanks
> 
> ron
> 
> 
> 
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