Intel Core i5-580M CP80617005487AD ユーザーズマニュアル
![Intel](https://files.manualsbrain.com/attachments/5a71b1e7f60391972dadeef20435931cbf4621a5/common/fit/150/50/86c99b5f14aeb2708e9a9e1b5305af4ccf882c1af0155dad25413c2ed84e/brand_logo.png)
製品コード
CP80617005487AD
Datasheet
37
Technologies
3.2
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.
These extensions enhance two areas:
• The launching of the Measured Launched Environment (MLE).
• The protection of the MLE from potential corruption.
• The protection of the MLE from potential corruption.
The enhanced platform provides these launch and control interfaces using Safer Mode
Extensions (SMX).
The SMX interface includes the following functions:
• Measured/Verified launch of the MLE.
• Mechanisms to ensure the above measurement is protected and stored in a secure
• Mechanisms to ensure the above measurement is protected and stored in a secure
location.
• Protection mechanisms that allow the MLE to control attempts to modify itself.
For more information on Trusted Execution Technology, see
3.3
Intel® Hyper-Threading Technology
The processor supports Intel® Hyper-Threading Technology (Intel® HT Technology),
which allows an execution core to function as two logical processors. While some
execution resources such as caches, execution units, and buses are shared, each
logical processor has its own architectural state with its own set of general-purpose
registers and control registers. This feature must be enabled via the BIOS and requires
operating system support.
Intel recommends enabling Hyper-Threading Technology with Microsoft Windows
Vista*, Microsoft Windows* XP Professional/Windows* XP Home, and disabling Hyper-
Threading Technology via the BIOS for all previous versions of Windows operating
systems. For more information on Hyper-Threading Technology, see http://
www.intel.com/products/ht/hyperthreading_more.htm.