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numa
2019 Dec 18
0
[RFC 00/13] virtio-iommu on non-devicetree platforms
...uest-host
> NUMA proximity domain mapping.
It looks like the user can specify this guest-host mapping on the
command-line:
-object memory-backend-ram,id=mem0,size=4G,host-nodes=3,policy=bind
-object memory-backend-ram,id=mem1,size=4G,host-nodes=4,policy=bind
-numa node,memdev=mem0,nodeid=numa0
-numa node,memdev=mem1,nodeid=numa1
-numa cpu,node-id=numa0,socket-id=0
-numa cpu,node-id=numa1,socket-id=1
numa0 and numa1 would get proximity domains 0 and 1, corresponding to host
domains 3 and 4. It is also possible to specify the NUMA node of a PCI bus
(via the PCI expander bridge), and...