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+---
+title: Machine definition
+description: Virtual machine hardware
+published: true
+date: 2025-06-01T17:37:29.262Z
+tags:
+editor: markdown
+dateCreated: 2025-06-01T17:37:29.262Z
+---
+
+# Virtual machine hardware
+
+Libvirt uses XML files to define virtual machine hardware.
+
+In the context of libvirt, a virtual machine or guest system is called a domain. In turn, a domain type refers to the hypervisor used for running the virtual machine.
+
+The following command output the XML description of the domain called *phyllomeos*
+
+```
+virsh dumpxml phyllomeos
+```
+
+```
+
+ [...]
+
+```
+
+## Domain type
+
+At the moment, Phyllome OS focuses solely on hardware-assisted virtualization with [KVM and QEMU](https://www.libvirt.org/drvqemu.html). Therefore, the domain type KVM is the one used by default.
+
+```
+
+ [...]
+
+```
+
+Not all QEMU commands are supported by Libvirt. To [pass QEMU commands](https://www.libvirt.org/drvqemu.html#pass-through-of-arbitrary-qemu-commands
+), one need to use the following instead and add the QEMU command line at the end :
+
+```
+
+ [...]
+
+
+
+
+
+
+
+
+```
+
+> If QEMU command lines are not immediately provided, it will automatically revert to simply `` upon writing changes to the domain
+{.is-info}
+
+Under QEMU, the said domain definition translates to:
+
+```
+qemu-system-x86_64 -enable-kvm [...]
+```
+