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Nick Piggin wrote: >> 1. We could create something similar to mem_map, we would need to handle 4 > >> different ways of creating mem_map. > >> 2. On x86 with 64 GB ram, if we decided to use vmalloc space, we would need > >> 64 MB of vmalloc'ed memory > > That's going to be a big job. You could probably do it quite easily for > > flatmem (just store an offset into the start of your page array), and > > maybe even sparsemem (add some "extra" information to the extents). > >> I have not explored your latest suggestion of pfn <-> memory controller > >> mapping yet. I'll explore it and see how that goes. > > If you did that using a radix-tree, then it could be a runtime option > > without having to use vmalloc. And you wouldn't have to care about > > memory models. I'd say it will be the fastest way to get a prototype > > running. > OK, I'll explore and prototype the radix tree based approach and see how that goes. -- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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