Messages in this thread | | | From | Johannes Weiner <> | Subject | Re: + bootmem-node-setup-agnostic-free_bootmem.patch added to -mm tree | Date | Tue, 15 Apr 2008 23:14:38 +0200 |
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Hi,
"Yinghai Lu" <yhlu.kernel@gmail.com> writes:
>> > 2. intel cross node box: node0: 0g-2g, 4g-6g, node1: 2g-4g, 6g-8g. i >> > don't think they have two bdata struct for every node. >> >> How do the bdata structures represent this setup right now? Are you >> sure that there is not a node descriptor for every contiguous region? > > http://lkml.org/lkml/2008/3/25/233 > > Subject [patch] srat, x86_64: Add support for nodes spanning other nodes > > For example, If the physical address layout on a two node system with 8 GB > memory is something like: > node 0: 0-2GB, 4-6GB > node 1: 2-4GB, 6-8GB > > Current kernels fail to boot/detect this NUMA topology. > > ACPI SRAT tables can expose such a topology which needs to be supported. > > Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
As I understood the code (more guessing than understanding), it breaks down these physical nodes into contiguous logical memory blocks which then get represented by having a node descriptor for each of them. Can you confirm that?
Hannes
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