So, in short, when they are together, QEMU is the hypervisor/emulator and KVM is the accelerating agent. It also adds the acceleration feature to the QEMU process. Turn off exporure of virtualization extensions: KVM helps QEMU to access hardware virtualization features on different architectures.To disable the exposure of virtualization extensions of a VM running in Hyper-V 2016, you can either delete the VM and create a new one, or you may run the following PowerShell commands in an elevated PowerShell prompt: Disabling Virtualization Extensions Exposure They are written below in the following section. If you are comfortable, you may simple enter the PowerShell commands manually to enable the virtualization extensions exposure to the VM. Running the above script is a best practice unless you are experienced and are aware of the consequences of improper configuration of a VM hosting nested virtualization. Now you may turn your Linux VM back on and enjoy KVM / QEMU nested virtualization!.
I purposely created a test VM with non-optimal settings to get the script to prompt me.
Either on your Hyper-V hypervisor or via remote PowerShell, set the ExecutionPolicy to Bypass, then run the script:.About 15 minutes later, though, I got a login prompt, which. Which lasted so long I thought that was the final product. Once I got the logon prompt from the QEMU guest it took a very long time to achieve the final QEMU result: That’s right, a black screen. Stop or Shut down your VM if it’s running. Boot time was about 6 minutes as compared to 23 seconds for the VirtualBox Ubuntu guest.Make sure your VM is not in a saved state.ps1 file on your Hyper-V 2016 hypervisor: Copy the following PowerShell script to a.2 Disabling Virtualization Extensions ExposureĮnabling Virtualization Extensions Exposure.In both cases, I did a grep of the process ID to see if there was any difference. I started a VM, once with QEMU as the Virt Type and once with KVM. In the GUI, you can choose the ‘Virt Type’ as either KVM or QEMU. 1 Enabling Virtualization Extensions Exposure You can use libvirt and the associated Virtual Machine Manager GUI to start a virtual machine.
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