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What do I need to run a guest machine in full virtualization mode?

by the editorial team

The processor must support Hardware-Assisted Virtual Machine (HVM).

To check if the processor supports HVM use the following command:

  • For Intel processors:
  •    grep -i vmx /proc/cpuinfo

  • For AMD processors:
  •    grep -i svm /proc/cpuinfo

  • If nothing returns, then fully virtualization guests will not run. 


In the BIOS verify virtualization is enabled:

  • To check if the BIOS is enabled, issue the following command:

       grep -i hvm /sys/hypervisor/properties/capabilities

  • If nothing returns; reboot the system and enable the BIOS, look for the setting relating to virtualization, HVM, VT, VMX or SVM.
  • The BIOS may contains different names for the virtualization setting; check the hardware manual or contact the hardware vendor for more details.

Red Hat’s customer service and support teams receive technical support questions from users all over the world. Red Hat technicians add the questions and answers to Red Hat Knowledgebase on a daily basis. Access to Red Hat Knowledgebase is free. Red Hat Magazine offers a preview into the Red Hat Knowledgebase by highlighting some of the most recent entries. The information provided in this article is for your information only. The origin of this information may be internal or external to Red Hat. While Red Hat attempts to verify the validity of this information before it is posted, Red Hat makes no express or implied claims to its validity.

4 responses to “What do I need to run a guest machine in full virtualization mode?”

  1. Ramesh | The Geek Stuff says:

    Thanks for the notes. Very helpful and timely for me, as I was planning to get the VM installed next week on a box.

    Ramesh.

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  4. GDprasad says:

    Thanks for your valuable points..
    If you add commad to enable BIOS at the end , in case the cpu supports full vitualization means it would really very helpful…
    I try to issue some command like
    xm dmesg | grep
    to enable the BIOS setting.
    Eventhough my cpu supported Full virtualiztion i got error
    Error : Unable to connect to xend :Broken Pipe like that.
    Since i am a newbie i am unable to find it…

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