If the above command does not produce output, then hardware virtualization support is unavailable and your hardware is unable to run HVM domU (or you are already running the Xen hypervisor). $ grep -E "(vmx|svm)" -color=always /proc/cpuinfo In order to verify this, run the following command when the Xen hypervisor is not running: To run HVM domU, the physical hardware must have either Intel VT-x or AMD-V (SVM) virtualization support. The Xen hypervisor requires kernel level support which is included in recent Linux kernels and is built into the linux 包 and linux-lts 包 Arch kernel packages. Xen supports both paravirtualized (PV) and hardware virtualized (HVM) domU. Once the dom0 has started, one or more domU (short for user domains, sometimes called VMs or guests) can be started and controlled from the dom0. Once the hypervisor is loaded, it starts the dom0 (short for "domain 0", sometimes called the host or privileged domain) which in our case runs Arch Linux. The hypervisor is started by the boot loader of the computer it is installed on. The Xen hypervisor is a thin layer of software which emulates a computer architecture allowing multiple operating systems to run simultaneously. 警告: Do not run other virtualization software such as VirtualBox when running Xen hypervisor, it might hang your system.
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