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f69ece073e
Some drivers don't expose available huge page sizes in the capabilities XML. For instance, LXC driver is one of those. This has a downside that when virsh is trying to get aggregated info on free pages per all NUMA nodes, it fails. The problem is that the virNodeGetFreePages() API expects caller to pass an array of page sizes he is interested in. In virsh, this array is filled from the capabilities from '/capabilities/host/cpu/pages' XPath. As said, in LXC there's no such XPath and therefore virsh fails currently. But hey, we can fallback: the page sizes are exposed under '/capabilities/host/topology/cells/cell/pages'. The page size can be collected from there, and voilà the command works again. But now we must make sure that there are no duplicates in the array passed to the public API. Otherwise we won't get as beautiful output as we are getting now. Signed-off-by: Michal Privoznik <mprivozn@redhat.com>