On Mon, Jul 08, 2013 at 01:27:05PM -0500, Anthony Liguori wrote: > Alexey Kardashevskiy <a...@ozlabs.ru> writes: > > > From: David Gibson <da...@gibson.dropbear.id.au> > > > > The vmstate infrastructure includes a VMS_MULTIPY flag, and associated > > VMSTATE_VBUFFER_MULTIPLY helper macro. These can be used to save a > > variably sized buffer where the size in bytes of the buffer isn't directly > > accessible as a structure field, but an element count from which the size > > can be derived is. > > Why? What's the point of sending the total size vs. the element > count?
Because it's more convenient to work with the total size at runtime,
and because the VMSTATE stuff works with actual structure fields,
there's not really a way to convert it at migrate time, short of this.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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