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xen-devel
Re: [Xen-devel] sparse M2P table
On 16/09/2009 12:05, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:
>> The guest P2Ms? Why would you want to do that - so that you can add some
>> hierarchy (and therefore sparseness) to the pseuo-phys address space too?
>> Otherwise I don't see why you would ever have a sparse P2M, and therefore
>> why you would care about efficiently handling large holes in it.
>
> Oh, typo (see subject) - I really mean the M2P table here. The P2M table
> has no reason to be sparse.
Ah okay, that makes more sense! I think M2P should be mapped sparsely and we
should expect guests to deal with it. We can revise that opinion if we find
strong reason to do otherwise. It's certainly what I was intending to do.
-- Keir
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