虚拟内存到物理内存的映射通过页表完成，这是在底层软件中实现的(见图1)。

The mapping of virtual memory to physical memory occurs through page tables, which are implemented in the underlying hardware (see Figure 1).

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注意这里的显示，进程可能有一个大的地址空间，但是很少见，就是说小的地址空间的区域(页面)通过页表指向物理内存。

Note that as shown here, a process may have a large address space, but it is sparse, meaning that small regions (pages) of the address space refer to physical memory through the page tables.

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处理器通过观察存储页表(由存储器核心维持)来决定存储区域的类型。

The processor determines the type of a given memory region mainly by looking at page tables, which are maintained by the kernel.

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