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This commits adds support for generating a NUMA PCIe hierarchy by adding
a pcie-expander-bus in each virtual node. When a PCI passthrough or
SR-IOV device is added is attached to the same virtual node as the
physical server. Changes include:
- Generate VM_* device parameters when the allocation is performed
- Generate CONTEXT PCIi_ADDRESS parameters at deployment time
- Refactor of the HostSharePCI to simplify argument passing.
The hierarchy created is as follows (example 2 NUMA nodes):
+-----------+
| |
| PCIe Root |
| |
+--+-----+--+
| ... |
+-----+ +-----+
NUMA node 0 | | NUMA node 1
+----+-----+ +----+-----+
| expander | | expander |
| bus | | bus |
+----+-----+ +----+-----+
| |
| ...
|
+------> port (0)
| ...
+------> port (3)
|
| +-----------+
| up | PCIe +-----> downstream port (0)
+----+ Switch | ...
| +-----> downstream port (8)
+-----------+
