Re: [Xen-devel] [PATCH 2/4] libxc: report how much memory a domain has on each NUMA node

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Dario Faggioli writes ("[PATCH 2/4] libxc: report how much memory a domain has 
on each NUMA node"):
> by means of a new interface: xc_domain_numainfo().
> 
> The caller is expected to allocate an array for the call to fill,
> with the results of the XEN_DOMCTL_numainfo hypercall. The size of
> the array is also passed to the function, which then returns back
> the number of elements that have actually been filled by Xen.

Is there a need to get this data in a way which is coherent with the
domain info list memory usage data ?

What are callers supposed to do about discrepancies between the two
sets of information ?

(I forget: is the choice of node to allocate memory from up to the
guest, or the hose ?  Is there any way to say a guest can use no more
than X1 amount on node 1 and no more than X2 on node 2 ?)

Ian.

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