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KVM x86 Enabling Nested Virtualization By Default, Other Virtualization Work

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  • KVM x86 Enabling Nested Virtualization By Default, Other Virtualization Work

    Phoronix: KVM x86 Enabling Nested Virtualization By Default, Other Virtualization Work

    The initial round of Kernel-based Virtual Machine (KVM) updates has been sent in for the in-development Linux 4.20/5.0 kernel...

    http://www.phoronix.com/scan.php?pag...-4.20-Features

  • #2
    Could someone explain to me what the use-case is for running a nested guest inside a guest that itself resides inside the KVM?
    It seems somewhat silly from my perspective.

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    • #3
      Originally posted by Mercyful Fate View Post
      Could someone explain to me what the use-case is for running a nested guest inside a guest that itself resides inside the KVM?
      It seems somewhat silly from my perspective.
      Well how else are we going to reach inception?

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      • #4
        One use case: Testing a system that supports VMs without requiring bare hardware.

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        • #5
          Originally posted by Mercyful Fate View Post
          Could someone explain to me what the use-case is for running a nested guest inside a guest that itself resides inside the KVM?
          It seems somewhat silly from my perspective.
          Example from my experience: prepare Citrix XenApp/XenDesktop farm (now with new fancy name: Citrix Virtual Apps and Desktops) on Linux host. It requires Citrix XenServer or VMware vSphere. In theory there is open-source Xen available, but on my Fedora 27 x64 EFI desktop it is not booting (probably because of EFI - only BIOS booting is supported). After enable nested virtualization in KVM - I successfully installed XenServer as another VM.

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          • #6
            Originally posted by Mercyful Fate View Post
            Could someone explain to me what the use-case is for running a nested guest inside a guest that itself resides inside the KVM?
            It seems somewhat silly from my perspective.
            Delivering a remote course about OpenStack. Each participant is given one VM (for isolation purposes) and has to install and configure OpenStack there.

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