RME

About

• Realm Management Extension (RME) is an Arm architecture extension for Confidential Computing
• Hardware foundation of Arm CCA
• Introduced with Armv9-A
• Adds Realm World for isolated confidential workloads
• Protects Realm memory from the host OS and Hypervisor
• Uses the Granule Protection Table (GPT) to control memory access

See also

• Arm CCA | RMM
• Realm | TrustZone
• Confidential Computing