Data migration method and apparatus

A data migration method, comprising:

• obtaining, by a destination host, running status data of a target application from a source host;
• restoring, by the destination host, an enclave of the target application in an EPC of memory;
• creating, by the destination host, a migration control thread of the target application in an enclave of the target application;
• and
• invoking, by the destination host, the migration control thread, to replicate the running status data to the EPC.

A host, wherein the host is a source host, and comprises:

• an obtaining unit, configured to obtain a migration instruction, wherein the migration instruction is used to instruct to migrate a target application created with a memory protection area enclave to a destination host;
• an execution unit, configured to invoke a migration control thread preset in the enclave of the target application, to write running status data of the target application in an enclave page cache EPC into target memory of the source host, wherein the target memory is an area other than the EPC in memory of the source host;
• and
• a sending unit, configured to send the running status data of the target application in the target memory to the destination host.

A host, wherein the host is a destination host, and comprises:

• an obtaining unit, configured to obtain running status data of a target application from a source host;
• a restoring unit, configured to restore an enclave of the target application in an EPC of memory of the destination host;
• a creating unit, configured to create a migration control thread of the target application in the enclave of the target application;
• and
• a replication unit, configured to invoke the migration control thread, to replicate the running status data to the EPC in an encrypted and integrity-protected manner.