PARAVIRTUALIZATION-BASED INTERFACE FOR MEMORY MANAGEMENT IN VIRTUAL MACHINES
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United States of America Patent
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Issued Date -
Dec 10, 2015
app pub date -
Jun 8, 2015
filing date -
Jun 10, 2014
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Abstract
A method for memory virtualization in a system including guest virtual, guest physical and host physical address spaces, a guest pagetable for translating addresses of the guest virtual address space into addresses of the guest physical address space, a shadow pagetable for translating addresses of the guest virtual address space into addresses of the host physical address space, and a hypervisor configured for calculating address entries for the shadow pagetable from valid address entries in the guest pagetable, includes managing, by the hypervisor, one or more shadow pagetable(s) by the hypervisor while a guest context is executed by a guest operating system, wherein the number of shadow pagetable(s) is smaller than or equal to the number of guest contexts in a current working set.
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