On Thu, 29 Dec 2016 17:25:59 +0800, Liang Li said: > x86-64 is currently limited physical address width to 46 bits, which > can support 64 TiB of memory. Some vendors require to support more for > some use case. Intel plans to extend the physical address width to > 52 bits in some of the future products.
Can you explain why this patchset mentions 52 bits in some places, and 57 in others? Is it because there are currently in-process chipsets that will do 52, but you want to future-proof it by extending it to 57 so future chipsets won't need more work? Or is there some other reason?
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