# title
The Scalable Matrix Extension (SME), for Armv9-A

# topic.label
The Scalable Matrix Extension (SME), for Armv9-A

# metadata.contentDescription
This supplement describes the changes and additions introduced by the Scalable Matrix Extension (SME) to the Armv9-A architecture. This document is now RETIRED. Please refer to the Arm Architecture Reference Manual for A-profile architecture (ddi0487) for a specification of the SME Architecture.