Introduction of CCA on Arm
summary
Arm CCA defines a hardware-backed confidential VM called a Realm whose memory is isolated and encrypted and whose initial measurement enables remote attestation; a Realm Management Monitor (RMM) plus a Realm Management Interface (RMI) accept commands from the hypervisor to create realms, copy and map guest memory, initialize registers and measurements, and switch contexts while policy stays with the hypervisor; guest attestation code is already upstreamed, host-side RMM work remains under development and no CCA-capable Arm CPUs are yet on market.
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chapters (10)
- 0:00ARM CCA introduction
- 1:01Why confidential computing
- 2:56Limitations of traditional security
- 5:06Core confidential computing concepts
- 7:55ARM CCA architecture overview
- 9:50ARM CCA execution states
- 11:45ARM CCA software stack components
- 16:03Realm VM creation process
- 17:52ARM CCA implementation requirements
- 19:17Summary and status
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