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2007 Oct 19
3
Problem with nr_nodes on large memory NUMA machine
...the first 166 GB of the physical memory map can be
accessed by 32-on-64 guests. (XEN) Truncating memory map to 174063616kB
After the memory is clipped, acpi_scan_nodes runs cutoff_node, which
limits the memory associated with each node according to the cutoff
values. Then, acpi_scan_nodes calls unparse_node to "remove" nodes that
don''t have the minimum amount of memory, due to the clipping of the
memory range.
Can someone explain what this is all about and why it might be necessary?
--
Elizabeth Kon (Beth)
IBM Linux Technology Center
Open Hypervisor Team
email: eak@us.ibm.com...