Arm CCA

The Confidential Compute Architecture (CCA) was announced by Arm in 2021 for the Armv9-A architecture. In essence, CCA brings the confidential VM (CVM) concept to the Arm world. It shares many similarities with SEV and TDX and targets server processors. However, as of now, there is still no corresponding hardware available. Notably, the CCA-specific firmware is open source.