Oracle VM VirtualBox's implementation currently supports paravirtualized clocks, APIC frequency reporting, guest debugging, guest crash reporting and relaxed timer checks. Hyper-V: Presents a Microsoft Hyper-V hypervisor interface which is recognized by Windows 7 and newer operating systems.
This provider is recommended for Linux guests. Oracle VM VirtualBox's implementation currently supports paravirtualized clocks and SMP spinlocks.
KVM: Presents a Linux KVM hypervisor interface which is recognized by Linux kernels version 2.6.25 or later. This provider is mandatory for running any Mac OS X guests. Additionally, reports the TSC and APIC frequency to the guest operating system. Minimal: Announces the presence of a virtualized environment. Oracle VM VirtualBox provides the following interfaces: For example, the Hyper-V paravirtualization provider can be used for VMs to run on any host platform supported by Oracle VM VirtualBox and not just Windows. Hence, there is typically no need to install additional software in the guest to take advantage of this feature.Įxposing a paravirtualization provider to the guest operating system does not rely on the choice of host platforms. Most modern mainstream guest operating systems, including Windows and Linux, ship with support for one or more paravirtualization interfaces. 
These interfaces require the guest operating system to recognize their presence and make use of them in order to leverage the benefits of communicating with the Oracle VM VirtualBox hypervisor. Oracle VM VirtualBox enables the exposure of a paravirtualization interface, to facilitate accurate and efficient execution of software within a virtual machine.
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