RE: [Xen-devel] [PATCH] Add DOM0_GETDOMAININFOLIST op for bulkretrieval of domain info

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> The attached patch adds a new dom0_op, 
> DOM0_GETDOMAININFOLIST.  This operation allows retrieval of 
> the domain info structures for all domains in one hypercall.
> 
> Using a small test program, on a system with 97 domains with 
> non-contiguous domain IDs, I found that with this hypercall I 
> could retrieve the full array of info structures 12840 times 
> per second, an improvement from 2380 times per second with 
> the DOM0_GETDOMAININFO op.

Can't you just reuse the existing xc_getdomain_info function and change
the hypercall depending on the number of domains being requested?

Ian

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