操作系统不能直接地访问这个Hypervisor资源，可以使用Hypervisor调用读取全局页表、或者向全局页表写入一个新的条目。
The operating system cannot access this hypervisor resource directly, and USES hypervisor calls to read or write a new entry to the global page table.
Hypervisor可以访问整个内存空间，并且通过全局分区页表来维护分配给分区的内存。
The hypervisor has access to the entire memory space, and maintains the memory allocated to partitions through a global partition page table.
Hypervisor使用全局分区页表将虚拟地址转换为系统范围的物理地址。
The hypervisor converts a virtual address to a system-wide physical address using the global partition page tables.
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