Messages in this thread | | | Date | Tue, 09 May 2006 17:14:30 +0100 | From | Andy Whitcroft <> | Subject | Re: [PATCH] SPARSEMEM + NUMA can't handle unaligned memory regions? |
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mike kravetz wrote: > On Tue, May 09, 2006 at 02:34:51PM +0100, Andy Whitcroft wrote: > >>3) record the nid -- when we record the memory present in the system we >>are passed the nid. >> >>Somehow the last of these seems the most logical given we have the >>correct information at the time we record that we need to instantiate >>the section. So I had a quick go at something which seems to have come >>out pretty clean. Attached is a completly untested patch to show what I >>am proposing. > > > Looks sane to me. I've always wanted to encode the nid in the section. > But, never had a compelling reason to do so. > > With this code in place, we could optimize the pfn_to_nid() routines to > now obtain the nid from the section (rather than page struct). However, > I'm not sure this is worth the effort.
Well its only in there temporarily during init, its not in there once we have allocated the section mem_map.
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