Messages in this thread | | | Date | Fri, 07 Dec 2007 19:26:44 -0800 | From | Geoff Levand <> | Subject | Re: PS3: trouble with SPARSEMEM_VMEMMAP and kexec |
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On 12/05/2007 10:09 PM, Yasunori Goto wrote: >> I'll try Milton's suggestion to pre-allocate the memory early. It seems >> that should work as long as nothing else before the hot-plug mem is added >> needs a large chunk. > > (However, I think Milton-san's suggestion is very desirable. > If preallocation of hotadd works on ia64 too, I'm very glad.)
As it turns out, preallocation is not a such a good solution I think because in the general case the system may need many allocations to support the added memory, so it would be difficult to know how much pre-allocated memory is needed. I think a preferable solution is to use memory from the newly added region.
I don't plan to work on a pre-allocation method. I think I can free up sufficient memory in other ways.
-Geoff
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