Messages in this thread | | | Subject | Re: [PATCH 1/5] v2 Split the memory_block structure | From | Dave Hansen <> | Date | Fri, 16 Jul 2010 11:33:30 -0700 |
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On Fri, 2010-07-16 at 13:23 -0500, Nathan Fontenot wrote: > > If the memory_block's state was inferred to be the same as each > > memory_block_section, couldn't we just keep a start and end phys_index > > in the memory_block, and get away from having memory_block_sections at > > all? > > Oooohhh... I like. Looking at the code it appears this is possible. I'll > try this out and include it in the next version of the patch. > > Do you think we need to add an additional file to each memory block directory > to indicate the number of memory sections in the memory block that are actually > present?
I think it's easiest to just say that each 'memory_block' can only hold contiguous 'memory_block_sections', and we give either the start/end or start/length pairs. It gets a lot more complicated if we have to deal with lots of holes.
I can just see the hardware designers reading this thread, with their Dr. Evil laughs trying to come up with a reason to give us a couple of terabytes of RAM with only every-other 16MB area populated. :)
-- Dave
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