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Re: [Xen-devel] RFC: [0/2] Remove netloop by lazy copying in netback

On Tue, Mar 27, 2007 at 02:02:39AM +0100, Keir Fraser wrote:
> Well, it could be a bit more work to change, but what does a p2m entry look
> like for a grant mapping? The p2m table should be a very convenient place to
> have typed entries, with one of those types being grant-mapping, and
> including the maptrack handle. The MFN can be derived from the maptrack
> handle where that is required. This would then conveniently be enough
> information to perform implicit unmaps (the lack of support of which is an
> annoying limitation for non-auto-translate guests which it would be really
> nice to avoid for auto-translate guests, particularly since it ought to be
> not really all that hard afaics).

OK I'll look into this for the auto-translated case.

BTW, what do you want me to do for the non-translated case? Should
I go back to the original grant table operation or use the guest
page-fault method?

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