Intel® Virtualization Technology FlexMigration Application Note

This application note discusses virtualization capabilities in Intel® processors that support Intel® VT FlexMigration usages. Retrieved from https://software.intel.com/sites/default/files/managed/c5/15/virtualization-technology-flexmigration-application-note.pdf on 2017 May 09. CHAPTER 1 INTRODUCTION 1.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1 CHAPTER 2 INTEL® VIRTUALIZATION TECHNOLOGY FLEXMIGRATION AND CPUID VIRTUALIZATION 2.1 CPUID VIRTUALIZATION AND A LIVE-MIGRATION COMPATIBILITY POOL. . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2.2 INTEL® V IRTUALIZATION TECHNOLOGY FLEXMIGRATION FOR VMS THAT OPERATE IN VMX NON-ROOT OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.3 INTEL® V IRTUALIZATION TECHNOLOGY FLEXMIGRATION FOR VMS THAT DO NOT OPERATE IN VMX NON- ROOT OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.3.1 CPUID Masking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2.3.1.1 Virtualization of CPUID Masking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 2.3.2 CPUID Faulting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 2.4 EXAMPLE USE OF INTEL® VIRTUALIZATION TECHNOLOGY FLEXMIGRATION . . . . . . . . . . . . . . . . . . . . . . 2-9 FIGURES Figure 2-1. Figure 2-2. Feature Information Returned by CPUID.01H.ECX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Feature Information Returned by CPUID.01H.EDX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5