A nice article!
I was trying to understand the space required to store four-level page tables in main memory. The /proc/<pid>/status file for any process contains the field VmPTE. The man page explains the field to be "Page table entries size (since Linux 2.6.10)." So does this mean that VmPTE in case of four-level page table implementation will indicate the space required for all levels of the table or just the last level of the table i.e. storage required for Page Table Entries (PTE) only?
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