还有一些代码通过使用影子页表(shadow page - table)和管理x86区段来提供内存映射。

There's code to provide the memory mapping through the use of shadow page-tables and management of x86 segments.

youdao

为达到效率最大化，频繁访问的表区段应当越少越好。

For maximum efficiency, frequently accessed tables should have as few extents as possible.

youdao

这指出了销售表包含三个区段。

This indicates that the sales table contains three extents.

youdao