Intel VT-d

E163096

Intel technology hardware-assisted I/O virtualization technology

Intel VT-d is Intel’s hardware-assisted I/O virtualization technology that enables secure and efficient direct device assignment to virtual machines.

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All labels observed (3)

Label	Occurrences
Intel VT-d canonical	8
Intel Virtualization Technology for Directed I/O	1
Virtualization Technology for Directed I/O	1

How this entity was disambiguated

This entity first appeared as the object of triple T1422849 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Intel VT-d
Context triple: [Intel Xeon, supportsFeature, Intel VT-d]

A. VMX
VMX is a vector processing extension to the PowerPC architecture designed to accelerate multimedia, signal processing, and other parallelizable computations.
B. PCI Express
PCI Express is a high-speed serial computer expansion bus standard used to connect components like graphics cards, SSDs, and network cards to a motherboard.
C. KVM
KVM (Kernel-based Virtual Machine) is a Linux kernel module that turns the kernel into a hypervisor, enabling hardware-assisted virtualization of multiple virtual machines.
D. Intel Xeon
Intel Xeon is a family of high-performance x86 processors designed by Intel for servers, workstations, and data center applications requiring reliability, scalability, and advanced multi-core processing.
E. Hyper-V
Hyper-V is Microsoft's native hypervisor platform that enables the creation and management of virtual machines on Windows systems.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Intel VT-d
Target entity description: Intel VT-d is Intel’s hardware-assisted I/O virtualization technology that enables secure and efficient direct device assignment to virtual machines.

A. VMX
VMX is a vector processing extension to the PowerPC architecture designed to accelerate multimedia, signal processing, and other parallelizable computations.
B. PCI Express
PCI Express is a high-speed serial computer expansion bus standard used to connect components like graphics cards, SSDs, and network cards to a motherboard.
C. KVM
KVM (Kernel-based Virtual Machine) is a Linux kernel module that turns the kernel into a hypervisor, enabling hardware-assisted virtualization of multiple virtual machines.
D. Intel Xeon
Intel Xeon is a family of high-performance x86 processors designed by Intel for servers, workstations, and data center applications requiring reliability, scalability, and advanced multi-core processing.
E. Hyper-V
Hyper-V is Microsoft's native hypervisor platform that enables the creation and management of virtual machines on Windows systems.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	Intel technology ⓘ hardware-assisted I/O virtualization technology ⓘ
abbreviationOf	Intel VT-d self-linksurface differs ⓘ surface form: Virtualization Technology for Directed I/O
aimsAt	improving virtualization performance ⓘ improving virtualization security ⓘ reducing I/O overhead in virtualized environments ⓘ
category	computer hardware technology ⓘ virtualization technology ⓘ
compatibleWith	Intel Xeon ⓘ surface form: Intel Xeon processors many Intel Core processors ⓘ
complements	Intel VT-x ⓘ
controls	device access to guest physical memory ⓘ
developer	Intel Corporation ⓘ surface form: Intel
enables	I/O virtualization ⓘ device passthrough ⓘ direct device assignment to virtual machines ⓘ
fullName	Intel VT-d self-linksurface differs ⓘ surface form: Intel Virtualization Technology for Directed I/O
improves	performance of high-throughput I/O workloads in VMs ⓘ security of multi-tenant virtualized systems ⓘ
introducedBy	Intel Corporation ⓘ
maps	device-visible addresses to host physical memory ⓘ
mitigates	DMA-based attacks ⓘ
provides	fine-grained control of device access to memory ⓘ hardware-assisted device isolation ⓘ protection against malicious or faulty DMA ⓘ
relatedTo	Intel VT-x ⓘ
requires	BIOS or UEFI firmware support ⓘ chipset support ⓘ operating system or hypervisor support ⓘ
standardizedIn	Intel VT-d specification ⓘ
supportedBy	KVM ⓘ Hyper-V ⓘ surface form: Microsoft Hyper-V VMware ESXi ⓘ Xen ⓘ
supports	DMA remapping ⓘ IOMMU functionality ⓘ interrupt remapping ⓘ isolation of device DMA ⓘ protection domains ⓘ
usedFor	PCI and PCIe device passthrough ⓘ assigning GPUs directly to virtual machines ⓘ assigning network adapters directly to virtual machines ⓘ
usedIn	cloud virtualization environments ⓘ data center virtualization ⓘ desktop platforms ⓘ server platforms ⓘ workstation platforms ⓘ
uses	I/O Memory Management Unit ⓘ

How these facts were elicited

Referenced by (10)

Full triples — surface form annotated when it differs from this entity's canonical label.

Intel Xeon → supportsFeature → Intel VT-d ⓘ

Airmont → supportsVirtualization → Intel VT-d ⓘ

Goldmont → supports → Intel VT-d ⓘ

Goldmont Plus → supports → Intel VT-d ⓘ

Tremont → supports → Intel VT-d ⓘ

Gracemont → supportsInstructionSetExtension → Intel VT-d ⓘ

Intel VT-x → relatedTo → Intel VT-d ⓘ

Intel VT-d → fullName → Intel VT-d self-linksurface differs ⓘ

this entity surface form: Intel Virtualization Technology for Directed I/O

Intel VT-d → abbreviationOf → Intel VT-d self-linksurface differs ⓘ

this entity surface form: Virtualization Technology for Directed I/O

Intel Trusted Execution Technology → relatedTo → Intel VT-d ⓘ

All labels observed (3)

How this entity was disambiguated Show

Statements (48)

How these facts were elicited Show

Referenced by (10)

How this entity was disambiguated

How these facts were elicited