Messages in this thread | | | Date | Tue, 8 Aug 2006 11:08:55 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [Lhms-devel] [PATCH 1/10] hot-add-mem x86_64: acpi motherboard fix |
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On Mon, 07 Aug 2006 17:56:56 -0700 keith mannthey <kmannth@us.ibm.com> wrote:
> I know of no x86_64 hardware the supports empty node hot-add memory. If > it exists I would recommend using SPARSEMEM based hot-add. On HW I am > aware of there is always some memory present in a node at boot. > > O.K one more.
I know x86_64 has ZONE_DMA32. A system boot with only memory below 4G has no avilable memory in ZONE_NORMAL. If a new memory above 4G is added, ZONE_NORMAL comes as *new* zone. ZONE_NORMAL is empty at boot, so it's not in zonelist at boot.
is this not problem ?
-Kame
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