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    • 3. 发明授权
    • Maintaining reverse mappings in a virtualized computer system
    • 维护虚拟化计算机系统中的反向映射
    • US08412910B2
    • 2013-04-02
    • US13186052
    • 2011-07-19
    • Pratap SubrahmanyamGarrett Smith
    • Pratap SubrahmanyamGarrett Smith
    • G06F12/08
    • G06F12/1027
    • For a virtual memory of a virtualized computer system in which a virtual page is mapped to a guest physical page which is backed by a machine page and in which a shadow page table entry directly maps the virtual page to the machine page, reverse mappings of guest physical pages are optimized by removing the reverse mappings of certain immutable guest physical pages. An immutable guest physical memory page is identified, and existing reverse mappings corresponding to the immutable guest physical page are removed. New reverse mappings corresponding to the identified immutable guest physical page are no longer added.
    • 对于虚拟化计算机系统的虚拟内存,其中将虚拟页面映射到由机器页面支持的客户物理页面,并且其中影子页表项目将虚拟页面直接映射到机器页面,客户端的反向映射 物理页面通过删除某些不可变的访客物理页面的反向映射进行优化。 识别不可变的访客物理内存页面,并删除对应于不可变客户物理页面的现有反向映射。 不再添加与识别的不可变客户物理页面相对应的新的反向映射。