Rapid Virtualization Indexing
Rapid Virtualization Indexing (RVI, formerly known as Nested Page Tables during its development) is an AMD second generation hardware-assisted virtualization technology for the processor memory management unit (MMU).
A VMware research paper found that RVI offers up to 42% gains in performance compared with software-only (shadow page table) implementation. Tests conducted by Red Hat showed a doubling in performance for OLTP benchmarks.
Support in software 
- VMware ESX 3.5 and later.
- Microsoft Hyper-V in Windows Server 2008 R2 and later.
- Linux KVM 2.6.26 and later.
- Oracle VM VirtualBox 2.0.0 and later.
- Xen 3.2.0 and later
See also 
- AMD-V (codename Pacifica) for the 1st generation AMD hardware virtualization support
- Extended Page Tables for the Intel equivalent
- "Rapid Virtualization Indexing with Windows Server 2008 R2 Hyper-V | The Virtualization Blog". Blogs.amd.com. 2009-03-23. Retrieved 2010-05-16.
- "Performance Evaluation of AMD RVI Hardware Assist" (PDF). Retrieved 2010-05-16.
- "Red Hat Magazine | Red Hat Enterprise Linux 5.1 utilizes nested paging on AMD Barcelona Processor to improve performance of virtualized guests". Magazine.redhat.com. 2007-11-20. Retrieved 2010-05-16.
- "VMware engineer praises AMD's Nested Page Tables". Searchservervirtualization.techtarget.com. 2008-07-21. Retrieved 2010-05-16.
- "AMD-V Rapid Virtualization Indexing and Windows Server 2008 R2 Hyper-V Second Level Address Translation". Doing IT Virtual. Retrieved 2010-05-16.
- "Kernel Newbies: Linux 2 6 26".
- "Changelog for VirtualBox 2.0".
- "Benchmarks: Xen 3.2.0 on AMD Quad-Core Opteron with RVI". 2008-06-15. Retrieved 2011-05-13.
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