3 ms·
Why only the top byte if there are two unused bytes before the remaining 48 bits of address?
by Waterluvian 4y ago
Why only the top byte if there are two unused bytes before the remaining 48 bits of address?
- cmovq 4y agoSome intel server CPUs support 57 bit addresses [1] [1]: https://en.m.wikipedia.org/wiki/Intel_5-level_paging https://en.m.wikipedia.org/wiki/Intel_5-level_paging
- Waterluvian 4y agoAre there actual computers running these CPUs addressing that much real or virtual memory? What’s the practical purpose of implementing that in Ice Lake?
- none_to_remain 4y agoApparently AWS will rent you a machine with 24 TB, so that's within an order of magnitude of the 256 TB limit.