CTR: Checkpoint, Transfer, and Restore for Secure Enclaves. (arXiv:2205.15359v1 [cs.CR])

Hardware-based Trusted Execution Environments (TEEs) are becoming
increasingly prevalent in cloud computing, forming the basis for confidential
computing. However, the security goals of TEEs sometimes conflict with existing
cloud functionality, such as VM or process migration, because TEE memory cannot
be read by the hypervisor, OS, or other software on the platform. Whilst some
newer TEE architectures support migration of entire protected VMs, there is
currently no practical solution for migrating individual processes containing
in-process TEEs. The inability to migrate …

checkpoint ctr