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Xen & KVM Changes Line Up For Linux 4.9

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  • Xen & KVM Changes Line Up For Linux 4.9

    Phoronix: Xen & KVM Changes Line Up For Linux 4.9

    Xen and KVM are the latest pull requests hitting the mailing list for the Linux 4.9 kernel...

    http://www.phoronix.com/scan.php?pag...-KVM-Linux-4.9

  • #2
    Is Xen still relevant now with latest KVM improvements?

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    • #3
      Originally posted by timofonic View Post
      Is Xen still relevant now with latest KVM improvements?
      It is, but it is for different use cases than KVM. I use KVM, though, simply because of it's simplicity, enough features and good performance. Also, xen usually gets some of the features (more on hardware side) much faster than KVM.

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      • #4
        Originally posted by GreenByte View Post

        It is, but it is for different use cases than KVM. I use KVM, though, simply because of it's simplicity, enough features and good performance. Also, xen usually gets some of the features (more on hardware side) much faster than KVM.

        Oh, I see. What kind of use cases? Big iron servers?

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        • #5
          Originally posted by timofonic View Post


          Oh, I see. What kind of use cases? Big iron servers?
          Mostly. In research, especially since Xen supports multi-user gpus.

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          • #6
            Did KVM ever get integrated gpu support finaliized? (ie: intel)

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            • #7
              Originally posted by dh04000 View Post
              Did KVM ever get integrated gpu support finaliized? (ie: intel)
              I did read about vGPU (is that the name?), but not sure if it got finalized. What about other hardware vendors like AMD and Nvidia?

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              • #8
                When i attempted to use Xen it really disappointed me with how deep it roots into the system. Had to boot xen kernel. Could no longer run vmware workstation when that kernel is booted. With KVM it is not a problem.

                Originally posted by GreenByte View Post
                Mostly. In research, especially since Xen supports multi-user gpus.
                What do you mean by "multi-user gpus"? Those new GPUs from AMD or general GPUs that xen can share between several VMs?


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                • #9
                  Originally posted by bitman View Post
                  When i attempted to use Xen it really disappointed me with how deep it roots into the system. Had to boot xen kernel. Could no longer run vmware workstation when that kernel is booted. With KVM it is not a problem.
                  I remember reading last week that as of a few versions ago, Xen's requirements were mainlined into the standard Linux kernel meaning you no longer need a customised kernel.

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                  • #10
                    Originally posted by Sluthy View Post

                    I remember reading last week that as of a few versions ago, Xen's requirements were mainlined into the standard Linux kernel meaning you no longer need a customised kernel.
                    Mainlined, yes. But DOM0 (host kernel) requires a different kernel configuration and usually cannot coexists with other virtualization solutions and breaks some drivers (E.g. nVidia).

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