Permitted operations are specified using control bits associated with each page table entry. 能允许的操作须指定使用与每个页表入口关联的控制位。
The addressed page is not present in memory, the corresponding Page Table entry is null, or a violation of the paging protection mechanism has occurred. 寻址的页不在内存中,对应的页表条目(PTE)是空的,或者是违背了页式管理的保护机制。
For a particular virtual page, a page table entry will give a corresponding physical page or note that the page is not present ( indicating a page fault ). 对于一个特定的虚拟页,根据一条页表记录可以找到对应的物理页,或者是页无法找到的提示(说明存在一个页错误)。
To determine the physical address corresponding to a given virtual address, the appropriate page table, and the correct entry within that page table must be located. 为了找到指定虚拟地址所对应的物理地址,必须定位于合适的页表及其中正确的入口。