This document introduces AMD's AMD-V Extended Migration Technology, which allows virtual machines to migrate from one computer to another without stopping operation.
This document describes AMD-V™ Extended Migration Technology, which enables virtual machine live migration between AMD64 processors. It outlines the virtualization concepts, migration methods, and the processor features required for seamless migration.
Key sections cover system virtualization, the three migration types (static, cold, live), processor feature detection via CPUID, compatibility challenges, and the use of feature‑disable bits to ensure forward‑compatibility. The note also lists supported AMD Opteron processor models and provides references for further reading.
| Supported AMD Opteron models | 840, 840 EE, 842, 846 HE, 850, ... |
|---|---|
| Feature‑disable bits interface | MSR‑based interface |
Static migration, cold migration, and live migration are described.
Software should use the CPUID instruction to determine processor features.
Feature‑disable bits allow new instructions to be disabled on future processors to maintain forward‑compatibility.