The page table is a data structure in the memory management system, which is used to provide a consistent virtual address space for each process. Each page table entry saves the virtual address to the physical address mapping, which is accessed by the application through the virtual address. In memory, the kernel will use page tables and hardware to translate virtual addresses into corresponding physical addresses.
Paging table
The so-called paging table means that a process has only one root page table, and different processes have different root page tables. So for different processes, the same virtual address can be translated to different physical addresses.