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With one of my recent patches (1c70277) libvirt's capable of reporting NUMA node locality for PCI devices. The node ID is stored in pci_dev.numa_node variable. However, since zero is valid NUMA node ID, the default is -1 as it is in kernel too. So, if the PCI device is not tied to any specific NUMA node, the default is then NOT printed into XML. Therefore, when parsing node device XML, the <node/> element is optional. But currently, if it's not there, we must set sane default, otherwise after parsing in the memory representation doesn't match the XML. We are already doing this in other place: udevProcessPCI(). Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>