Editing ARM architecture family (section)

===={{anchor|TrustZone for ARMv8-M}}TrustZone for Armv8-M (for Cortex-M profile)====
The Security Extension, marketed as TrustZone for Armv8-M Technology, was introduced in the Armv8-M architecture. While containing similar concepts to TrustZone for Armv8-A, it has a different architectural design, as world switching is performed using branch instructions instead of using exceptions.<ref>{{cite web |url=https://developer.arm.com/documentation/100690/0100/Introduction/Secure-and-Non-secure-worlds/Relationship-between-ARM-TrustZone-technology-for-ARMv8-M-and-ARM-Cortex-A-processors?lang=en |title=Relationship between ARM TrustZone technology for ARMv8-M and ARM Cortex-A processors |publisher=[[Arm Holdings|ARM Developer]]}}</ref> It also supports safe interleaved interrupt handling from either world regardless of the current security state. Together these features provide low latency calls to the secure world and responsive interrupt handling. ARM provides a reference stack of secure world code in the form of Trusted Firmware for M and [[PSA Certified]].