Vol 1

Intel® Xeon® Product 2800/4800/8800 v2 Product Family 25
Datasheet Volume One, February 2014
Technologies
• Support for hardware based flushing of translated but pending writes and pending
reads upon IOTLB invalidation.
• Support for page-selective IOTLB invalidation.
• Support for ARI (Alternative Requester ID - a PCI SIG ECR for increasing the
function number count in a PCIe device) to support IOV devices.
2.1.3.2 Intel VT-d Intel Xeon E7 v2 Processor Feature Additions
The following are new features supported in Intel VT-d on Intel Xeon E7 v2 processor:
• Improved invalidation architecture
• End point caching support
• Interrupt remapping
• 2M/1G super page support
2.1.4 Intel VT Intel Xeon E7 v2 Processor Extensions
The processor supports the following Intel VT Intel Xeon E7 v2 Processor Extensions
features:
• Large Intel VT-d Pages
— Adds 2 MB and 1 GB page sizes to Intel VT-d implementations
— Matches current support for Extended Page Tables (EPT)
— Ability to share CPU's EPT page-table (with super-pages) with Intel VT-d
— Benefits:
• Less memory foot-print for I/O page-tables when using super-pages
• Potential for improved performance - Due to shorter page-walks, allows
hardware optimization for IOTLB
• Transition latency reductions expected to improve virtualization performance
without the need for VMM enabling. This reduces the VMM overheads further and
increase virtualization performance.
2.2 Security Technologies
2.2.1 Intel® Trusted Execution Technology (Intel® TXT)
Intel TXT defines platform-level enhancements that provide the building blocks for
creating trusted platforms.
The Intel TXT platform helps to provide the authenticity of the controlling environment
such that those wishing to rely on the platform can make an appropriate trust decision.
The Intel TXT platform determines the identity of the controlling environment by
accurately measuring and verifying the controlling software.
Another aspect of the trust decision is the ability of the platform to resist attempts to
change the controlling environment. The Intel TXT platform will resist attempts by
software processes to change the controlling environment or bypass the bounds set by
the controlling environment.
Intel TXT is a set of extensions designed to provide a measured and controlled launch
of system software that will then establish a protected environment for itself and any
additional software that it may execute.