ARMv82A

Armv8.2-A is a version of the ARM architecture, specifically designed for 64-bit processors. It is an extension of the ARMv8-A architecture, which was introduced in 2011. The Armv8.2-A architecture was released in 2016 and includes several new features and improvements over its predecessor.

One of the key features of Armv8.2-A is the introduction of the Statistical Profiling Extension (SPE). This extension allows for more efficient profiling of software performance, which can be used to optimize code and improve overall system performance.

Another important feature of Armv8.2-A is the addition of the Data Independent Timing (DIT) feature. This feature helps to mitigate side-channel attacks by making the timing of data access independent of the data values being accessed.

The Armv8.2-A architecture also includes several other improvements, such as enhanced support for virtualization, improved memory management, and better support for security features.

Armv8.2-A is widely used in a variety of applications, including servers, embedded systems, and mobile devices. It is supported by a wide range of processors from various manufacturers, including ARM itself, Qualcomm, and Samsung.

In summary, Armv8.2-A is an extension of the ARMv8-A architecture that includes several new features and improvements, such as the Statistical Profiling Extension and Data Independent Timing. It is widely used in a variety of applications and is supported by a wide range of processors.