Messages in this thread | | | From | "Luck, Tony" <> | Subject | RE: [PATCH RESEND] memory hotplug: fix a double register section info bug | Date | Fri, 14 Sep 2012 16:24:32 +0000 |
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> This is an unusual configuration but it's not unheard of. PPC64 in rare > (and usually broken) configurations can have one node span another. Tony > should know if such a configuration is normally allowed on Itanium or if > this should be considered a platform bug. Tony?
We definitely have platforms where the physical memory on node 0 that we skipped to leave physical address space for PCI mem mapped devices gets tagged back at the very top of memory, after other nodes.
E.g. A 2-node system with 8G on each might look like this:
0-2G RAM on node 0 2G-4G PCI map space 4G-8G RAM on node 0 8G-16GRAM on node 1 16G-18G RAM on node 0
Is this the situation that we are talking about? Or something different?
-Tony
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