Optimization of reverse mappings for immutable guest...

Details Optimization of reverse mappings for immutable guest... Optimization of reverse mappings for immutable guest...

2006-03-31

2009-12-22

Kim, Matt (Department: 2186)

Electrical computers and digital processing systems: memory

Address formation

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C711S006000, C711S203000

Reexamination Certificate

active

07636831

ABSTRACT:
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.

REFERENCES:
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patent: 2006/0206658 (2006-09-01), Hendel et al.
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Waldspurger, Carl. “Memory Resource Management in VMware ESX Server,” Dec. 2002, Fifth Symposium on Operating Systems Design and Implementation, pp. 1-14.

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