Developer Guide

  • 04/03/2019
  • Public Content

Host Interface Service

The Intel® DAL Host Interface Service (Intel® DAL HIS) is part of the Intel DAL infrastructure and serves as an intermediate layer between host applications and the Intel DAL firmware component:
  • The Intel® DAL HIS serves as the communications channel between trusted applications and host-based applications.
  • The Intel DAL HIS maintains the virtual model and state of the Intel DAL firmware subsystem. Among its roles is to ensure loaded trusted applications remain loaded after a firmware or machine reset.
: While the component's official name is Intel® DAL Host Interface Service (Intel® DAL HIS), it is commonly referred to by its engineering name: JHI.
See How to Create Your First Project for a C++ implementation example, as well as a C# implementation under "Create a .NET* Host Application".

Product and Performance Information


Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804