Intel CL8064701528402 Datový list stáhnout pdf (Strana 25)

Datasheet 25

Technologies

3.1.3.1 Intel

VT-d Features Supported

The processor supports the following Intel VT-d features:

• Root entry, context entry, and default context

• Support for 4-K page sizes only

• Support for register-based fault recording only (for single entry only) and support

for MSI interrupts for faults

— Support for fault collapsing based on Requester ID

• Support for both leaf and non-leaf caching

• Support for boot protection of default page table

— Support for non-caching of invalid page table entries

• 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 I/O Virtualization (IOV)

devices

• Improved invalidation architecture

• End point caching support (ATS)

• Interrupt remapping

3.1.4 Intel

Virtualization Technology Processor Extensions

The processor supports the following Intel VT processor extension features:

• Large Intel VT-d Pages

— Adds 2MB and 1GB page sizes to Intel VT-d implementations

— Matches current support for Extended Page Tables (EPT)

— Ability to share processor 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.

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 115 116

Žádné komentáře

Intel CL8064701528402 Datový list Strana 25