Accelerating two-dimensional page walks for virtualized systems
Ravi Bhargava, Benjamin Serebrin, Francesco Spadini, Srilatha Manne · 2008
Nested paging is a hardware solution for alleviating the software memory management overhead imposed by system virtualization. Nested paging complements existing page walk hardware to form a two-dimensional (2D) page walk, which reduces the need for hypervisor intervention in guest page table management. However, the extra dimension also increases the maximum number of architecturally-required page table references.