Created attachment 655006 [details]
udevadm info --export-db for devices

Description of problem:
I have an Chromebook with a Cortex A-15  ARM CPU. Libvirt is not reporting any NUMA information in virsh capabilites, 

# virsh capabilities
<capabilities>

  <host>
    <uuid>7383f7f7-b337-d1cb-1062-aa6e25ba591f</uuid>
    <cpu>
      <arch>armv7l</arch>
    </cpu>
    <power_management>
      <suspend_mem/>
    </power_management>
    <migration_features>
      <live/>
      <uri_transports>
        <uri_transport>tcp</uri_transport>
      </uri_transports>
    </migration_features>
  </host>

</capabilities>


though nodeinfo says there is 1 node


# virsh nodeinfo
CPU model:           armv7l
CPU(s):              2
CPU frequency:       0 MHz
CPU socket(s):       1
Core(s) per socket:  2
Thread(s) per core:  1
NUMA cell(s):        1
Memory size:         2069816 kB

# virsh freecell
error: this function is not supported by the connection driver: NUMA memory information not available on this platform


The cause is that numactl is x86-only. For other platforms libvirt simply disables NUMA information. A more satisfactory approach is probably to just report a single node in the capabilities, and make freecell hardcode a single node.

This allows applications to use the NUMA functionality regardless of platform



Version-Release number of selected component (if applicable):
libvirt-client-0.9.11.6-1.fc17.armv7hl

How reproducible:
Always