Shaohui, I was able to online a cpu to node 0 successfully. My problem was that I did not take the cpu offline before I released it. Everything looks to be working for me. Thanks for your help, Eric On Wed, 08 Dec 2010, Shaohui Zheng wrote: > On Tue, Dec 07, 2010 at 11:24:20AM -0700, Eric B Munson wrote: > > Shaohui, > > > > The documentation patch seems to be stale, it needs to be updated to match the > > new file names. > > > Eric, > the major change on the patchset is on the interface, for the v8 emulator, > we accept David's per-node debugfs add_memory interface, we already included > in the documentation patch. the change is very small, so it is not obvious. > > This is the change on the documentation compare with v7: > +3) Memory hotplug emulation: > + > +The emulator reserves memory before OS boots, the reserved memory region is > +removed from e820 table. Each online node has an add_memory interface, and > +memory can be hot-added via the per-ndoe add_memory debugfs interface. > + > +The difficulty of Memory Release is well-known, we have no plan for it until > +now. > + > + - reserve memory thru a kernel boot paramter > + mem=1024m > + > + - add a memory section to node 3 > + # echo 0x40000000 > mem_hotplug/node3/add_memory > + OR > + # echo 1024m > mem_hotplug/node3/add_memory > + > > -- > Thanks & Regards, > Shaohui >
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