27 lines
1.5 KiB
XML
27 lines
1.5 KiB
XML
<?xml version='1.0' encoding='UTF-8'?>
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<!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
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<topic xml:lang="en-us" id="nested-virt">
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<title>Nested Virtualization</title>
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<body>
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<p><ph conkeyref="vbox-conkeyref-phrases/product-name"/> supports <i>nested virtualization</i>. This feature enables
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the passthrough of hardware virtualization functions to the guest VM. That means that you can install a
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hypervisor, such as <ph conkeyref="vbox-conkeyref-phrases/product-name"/>, Oracle VM Server or KVM, on an <ph
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conkeyref="vbox-conkeyref-phrases/product-name"/> guest. You can then create and run VMs within the guest VM. </p>
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<p>Hardware virtualization features not present on the host CPU will not be exposed to the guest. In addition, some
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features such as nested paging are not yet supported for passthrough to the guest. </p>
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<p>You can enable the nested virtualization feature in one of the following ways: </p>
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<ul>
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<li>
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<p>From <ph conkeyref="vbox-conkeyref-phrases/vbox-mgr"/>, select the <b outputclass="bold">Enable Nested
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VT-x/AMD-V</b> check box on the <b outputclass="bold">Processor</b> tab. To disable the feature, deselect
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the check box. </p>
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</li>
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<li>
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<p>Use the <codeph>--nested-hw-virt</codeph> option of the <userinput>VBoxManage modifyvm</userinput> command to
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enable or disable nested virtualization. See <xref href="vboxmanage-modifyvm.dita">VBoxManage modifyvm</xref>. </p>
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</li>
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</ul>
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</body>
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</topic>
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