On 3/11/22 01:36, David Laight wrote: > Wikipedia also notes: > Intel has implemented a scheme with a 5-level page table, which allows > Intel 64 processors to support a 57-bit virtual address space. > Further extensions may allow full 64-bit virtual address space and > physical memory by expanding the page table entry size to 128-bit, > and reduce page walks in the 5-level hierarchy by using a larger 64 KiB > page allocation size that still supports 4 KiB page operations for > backward compatibility. > If they implement 64K pages then you lose the extra bits. I can't believe I need to say this: Wikipedia is not an authoritative source about what anyone is going to do with their CPUs in the future. Please don't base any Linux decisions off this information.
