More than one virtual address can refer to the same physical memory location.

多个虚拟地址可以指向同一物理地址。

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For example, one PPE-side mailbox register appears as a write-only physical memory location.

例如，一个ppe端的邮箱寄存器会作为一个只写的物理内存位置出现。

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When a program tries to access memory using a virtual address, the OS in combination with on-chip hardware maps that virtual address to the physical location.

当程序尝试使用虚拟地址访问内存时，操作系统结合片上硬件将该虚拟地址映射到物理位置。

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