. . . . . . . . . . . . . . . . 29 4 The VirtualBox shell 31 5 Main API changes to support the ARM64 architecture 33 5.1 Overview of the Changes to the Main API . . . . . . . . . . . . . . . . . . available. 32 5 Main API changes to support the ARM64 architecture VirtualBox 7.1 introduces support for running virtual machines on hosts containing an ARM CPU. Since VirtualBox has been designed and developed virtualizing x86 hardware since its inception adding support for ARM CPUs required a variety of changes to the Main API to accommodate two different CPU architectures. 5.1 Overview of the Changes to the Main API

...................27 1.4.2 Arm Host Limitations.....................................................................................................27 1.4.3 Intel Host CPU Requirements............... Guest Operating Systems................................................................. 85 3.1.2 Arm Guest Operating Systems........................................................................... Graphics and Mouse Driver Setup in Depth................................................. 413 9.4 CPU Hot-Plugging......................................................................................

when a CPU changes. 23.1 Attributes 23.1.1 CPU (read-only) unsigned long ICPUChangedEvent::CPU The CPU which changed. 23.1.2 add (read-only) boolean ICPUChangedEvent::add Flag whether the CPU was added well. Notification when the CPU execution cap changes. 24.1 Attributes 24.1.1 executionCap (read-only) unsigned long ICPUExecutionCapChangedEvent::executionCap The new CPU execution cap value. (1-100) (1-100) lxix Classes (interfaces) 25 ICPUProfile CPU profile. Immutable. 25.1 Attributes 25.1.1 name (read-only) wstring ICPUProfile::name The name. 25.1.2 fullName (read-only) wstring ICPUProfile::fullName

methods and at- tributes as well. Notification when a CPU changes. 5.12.1 Attributes 5.12.1.1 CPU (read-only) unsigned long ICPUChangedEvent::CPU The CPU which changed. 5.12.1.2 add (read-only) boolean boolean ICPUChangedEvent::add Flag whether the CPU was added or removed. 5.13 ICPUExecutionCapChangedEvent (IEvent) Note: This interface extends IEvent and therefore supports all its methods and at- tributes Notification when the CPU execution cap changes. 5.13.1 Attributes 5.13.1.1 executionCap (read-only) unsigned long ICPUExecutionCapChangedEvent::executionCap The new CPU execution cap value. (1-100)

methods and at- tributes as well. Notification when a CPU changes. 5.12.1 Attributes 5.12.1.1 CPU (read-only) unsigned long ICPUChangedEvent::CPU The CPU which changed. 5.12.1.2 add (read-only) boolean boolean ICPUChangedEvent::add Flag whether the CPU was added or removed. 5.13 ICPUExecutionCapChangedEvent (IEvent) Note: This interface extends IEvent and therefore supports all its methods and at- tributes Notification when the CPU execution cap changes. 5.13.1 Attributes 5.13.1.1 executionCap (read-only) unsigned long ICPUExecutionCapChangedEvent::executionCap The new CPU execution cap value. (1-100)

when a CPU changes. 23.1 Attributes 23.1.1 CPU (read-only) unsigned long ICPUChangedEvent::CPU The CPU which changed. 23.1.2 add (read-only) boolean ICPUChangedEvent::add Flag whether the CPU was added well. Notification when the CPU execution cap changes. 24.1 Attributes 24.1.1 executionCap (read-only) unsigned long ICPUExecutionCapChangedEvent::executionCap The new CPU execution cap value. (1-100) (1-100) lxix Classes (interfaces) 25 ICPUProfile CPU profile. Immutable. 25.1 Attributes 25.1.1 name (read-only) wstring ICPUProfile::name The name. 25.1.2 fullName (read-only) wstring ICPUProfile::fullName

4 Supported Host Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4.1 Host CPU Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.5 Installing Oracle VM VirtualBox . . . 335 9.3.2 Guest Graphics and Mouse Driver Setup in Depth . . . . . . . . . . . . 335 9.4 CPU Hot-Plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336 9.5 Webcam . . . . . . . . . . 403 12.2.4 Frequency Scaling Effect on CPU Usage . . . . . . . . . . . . . . . . . . 403 12.2.5 Inaccurate Windows CPU Usage Reporting . . . . . . . . . . . . . . . . 403 12.2.6

4 Supported Host Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.4.1 Host CPU Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.5 Installing Oracle VM VirtualBox . . 335 10.3.2 Guest Graphics and Mouse Driver Setup in Depth . . . . . . . . . . . . 335 10.4 CPU Hot-Plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336 10.5 Webcam . . . . . . . . . . 403 13.2.4 Frequency Scaling Effect on CPU Usage . . . . . . . . . . . . . . . . . . 403 13.2.5 Inaccurate Windows CPU Usage Reporting . . . . . . . . . . . . . . . . 403 13.2.6

4 Supported Host Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.4.1 Host CPU Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.5 Installing Oracle VM VirtualBox . . 335 10.3.2 Guest Graphics and Mouse Driver Setup in Depth . . . . . . . . . . . . 335 10.4 CPU Hot-Plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336 10.5 Webcam . . . . . . . . . . 403 13.2.4 Frequency Scaling Effect on CPU Usage . . . . . . . . . . . . . . . . . . 403 13.2.5 Inaccurate Windows CPU Usage Reporting . . . . . . . . . . . . . . . . 403 13.2.6

4 Supported Host Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4.1 Host CPU Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.5 Installing Oracle VM VirtualBox . . . 335 9.3.2 Guest Graphics and Mouse Driver Setup in Depth . . . . . . . . . . . . 335 9.4 CPU Hot-Plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336 9.5 Webcam . . . . . . . . . . 403 12.2.4 Frequency Scaling Effect on CPU Usage . . . . . . . . . . . . . . . . . . 403 12.2.5 Inaccurate Windows CPU Usage Reporting . . . . . . . . . . . . . . . . 403 12.2.6