Re: [RFC PATCH 3/6] kvm: Merge id_to_index into memslots

From: Alex Williamson
Date: Wed Dec 05 2012 - 17:58:09 EST

On Wed, 2012-12-05 at 19:22 -0200, Marcelo Tosatti wrote:
> On Mon, Dec 03, 2012 at 04:39:24PM -0700, Alex Williamson wrote:
> > This allows us to resize this structure and therefore the number of
> > memslots as part of the RCU update.
> Why is this necessary? "struct memslots" is updated, message above
> conflicts with that.
> If there is a reason, "id_to_index" becomes confusing.

I can't have two indeterminate sized arrays in the same structure, so by
moving id_to_index into struct kvm_memory_slot I get back to one array.
I'm playing with whether this is worthwhile. If we reduce id_to_index
to a short then we can leave it with a static size and still get a
memory savings for the typical case. Thanks,


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