Bug ID 20991993: The live migration of a guest domain that has the cpu-arch property value set to native might fail. This problem is due to mismatched system firmware versions.
If the domain to be migrated runs at least the Oracle Solaris 11.2.9.5.0 OS, the migration fails unless both systems run the appropriate system firmware versions:
SPARC T5, SPARC M5, and SPARC M6 systems. At least version 9.3.0 or versions older than or equal to 9.2.1.
SPARC T4 systems. At least version 8.6.0 or versions older than or equal to 8.5.1.
Workaround: Set the cpu-arch property value to migration-class1 on the domain to be migrated.
You must stop and restart the guest domain before you change the cpu-arch property value from native to migration-class1.