Xen Project Release Features

__TOC__
Legend: 
* : Feature 
* : Partial 
* : Removed 
* For definitions of experimental, preview, supported and deprecated see here
== Xen 4.10 or Newer ==
The matrix is generated with the relevant tree, aka
* unstable/support-matrix.html
* unstable-staging/support-matrix.html
* Etc.
== Archive ==
To make the table more usable, we have archived information related to older releases in 
* Archived/Xen Project Release Features 4.0 to 4.3
== Overview ==
 	Xen 4.4 	Xen 4.5 	Xen 4.6 	Xen 4.7 	Xen 4.8 	Xen 4.9 	 	 	
Initial Release 	10 March 2014 	15 Jan 2015 	13 Oct 2015 	20 June 2016 	5 Dec 2016 	28 June 2017 	 	 	
Supported until 	Sept 2015 	July 2016 	April 2017 	Dec 2017 	June 2018 	Jan 2019 	 	 	
Security support until 	March 2017 	Jan 2018 	Oct 2018 	June 2019 	Dec 2019 	July 2020 	 	 	
Feature List 	FL 4.4 	FL 4.5 	FL 4.6 	FL 4.7 	FL 4.8 	FL 4.9 	 	 	
Release Notes 	RN 4.4 	RN 4.5 	RN 4.6 	RN 4.7 	RN 4.8 	RN 4.9 	 	 	
Supported Mainline Architectures for the hypervisor (Host) 	Supported Mainline Architectures for the hypervisor (Host)	Supported Mainline Architectures for the hypervisor (Host)	Supported Mainline Architectures for the hypervisor (Host)	Supported Mainline Architectures for the hypervisor (Host)	Supported Mainline Architectures for the hypervisor (Host)	Supported Mainline Architectures for the hypervisor (Host)	Supported Mainline Architectures for the hypervisor (Host)	Supported Mainline Architectures for the hypervisor (Host)	Supported Mainline Architectures for the hypervisor (Host)
X86-64 	 	 	 	 	 	 	 	 	
ARM v7 + Virtualization Extensions 	 	[ 8 ] 	[ 14 ] 	[ 26 ] 	[ 26 ] 	[ 26 ] 	 	 	
ARM v8 	 	[ 8 ] 	[ 15 ] 	[ 15 ] 	[ 15 ] 	[ 15 ] 	 	 	
Guest Types 	Guest Types 	Guest Types 	Guest Types 	Guest Types 	Guest Types 	Guest Types 	Guest Types 	Guest Types 	Guest Types
For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures
ParavirtualisedTraditional Xen Project PV guest 	 	 	 	 	 	 	 	 	
HVM Guest [ 1 ]Fully virtualised guest using hardware virtualisation extensions 	 	 	 	 	 	 	 	 	
PV-on-HVM Guest [ 1 ]Fully virtualised guest using PV extensions/drivers for improved performance	 	 	 	 	 	 	 	 	
PVH Guest 	preview 	previewadded PVH Dom0 	preview 	preview 	previewstarted implementing PVHv2 	previewremoved PVHv1 	 	 	
For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures
ARM GuestOptimal combination of full virtualization and PV extensions 	 	 	 	 	 	 	 	 	
== Limits ==
 	Xen 4.4 	Xen 4.5 	Xen 4.6 	Xen 4.7 	Xen 4.8 	Xen 4.9 - 4.11 	 	 	
Host Limits 	Host Limits 	Host Limits 	Host Limits 	Host Limits 	Host Limits 	Host Limits 	Host Limits 	Host Limits 	Host Limits
For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures
Physical CPUs 	4095 	4095 	4095 	4095 	4095 	4095 	 	 	
Physical RAM 	16TB 	16TB 	16TB 	16TB 	16TB 	16TB 	 	 	
For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures 	For ARM Architectures
Physical CPUs 	8 	8 	8 for 32bit; 128 for 64bit 	8 for 32bit; 128 for 64bit 	8 for 32bit; 128 for 64bit 	8 for 32bit; 128 for 64bit 	 	 	
Physical RAM 	16GB 	16GB for 32bit, 5TB for 64bit	16GB for 32bit, 5TB for 64bit	16GB for 32bit, 5TB for 64bit	16GB for 32bit, 5TB for 64bit	16GB for 32bit, 5TB for 64bit	 	 	
Guest Limits 	Guest Limits 	Guest Limits 	Guest Limits 	Guest Limits 	Guest Limits 	Guest Limits 	Guest Limits 	Guest Limits 	Guest Limits
X86 PV Guest Limits 	X86 PV Guest Limits 	X86 PV Guest Limits 	X86 PV Guest Limits 	X86 PV Guest Limits 	X86 PV Guest Limits 	X86 PV Guest Limits 	X86 PV Guest Limits 	X86 PV Guest Limits 	X86 PV Guest Limits
Virtual CPUs 	512 	512 	512 	512 	512 	512 	 	 	
Virtual RAM 	512GB 	512GB 	512GB 	> 1TB 	> 1TB 	> 1TB 	 	 	
X86 HVM Guest Limits 	X86 HVM Guest Limits 	X86 HVM Guest Limits 	X86 HVM Guest Limits 	X86 HVM Guest Limits 	X86 HVM Guest Limits 	X86 HVM Guest Limits 	X86 HVM Guest Limits 	X86 HVM Guest Limits 	X86 HVM Guest Limits
Virtual CPUs 	128 	128 	128 	128 	128 	128 	 	 	
Virtual RAM 	1TB 	1TB 	1TB 	1TB 	1TB 	1TB 	 	 	
ARM Guest Limits 	ARM Guest Limits 	ARM Guest Limits 	ARM Guest Limits 	ARM Guest Limits 	ARM Guest Limits 	ARM Guest Limits 	ARM Guest Limits 	ARM Guest Limits 	ARM Guest Limits
Virtual CPUs 	8 	8 	8 for 32bit; 128 for 64bit 	8 for 32bit; 128 for 64bit 	8 for 32bit; 128 for 64bit 	8 for 32bit; 128 for 64bit 	 	 	
Virtual RAM 	16GB 	1TB [ 7 ] 	1TB [ 7 ] 	1TB [ 7 ] 	1TB [ 7 ] 	1TB [ 7 ] 	 	 	
Number of event channels	Number of event channels	Number of event channels 	Number of event channels 	Number of event channels 	Number of event channels 	Number of event channels 	Number of event channels	Number of event channels	Number of event channels
Event Channels 	131072 	131072 	131072 	131072 	131072 	131072 	 	 	
== Toolstack and Tools ==
 	Xen 4.4 	Xen 4.5 	Xen 4.6 	Xen 4.7 	Xen 4.8 	Xen 4.9 	 	 	
Toolstack 	Toolstack 	Toolstack 	Toolstack 	Toolstack 	Toolstack 	Toolstack 	Toolstack	Toolstack	Toolstack
Built-in 	Built-in 	Built-in 	Built-in 	Built-in 	Built-in 	Built-in 	Built-in 	Built-in 	Built-in
xend / xm 	deprecated	removed 	 	 	 	 	 	 	
XL 	 	 	 	 	 	 	 	 	
Qemu based disk backend (qdisk) for XL 	[ 5 ] 	[ 5 ] 	[ 5 ] 	[ 5 ] 	[ 5 ] 	[ 5 ] 	 	 	
XL Open vSwitch integration 	 	 	 	 	 	 	 	 	
systemd support 	 	 	 	 	 	 	 	 	
JSON support 	 	infrastructure only, no tools support 	infrastructure only, no tools support	infrastructure only, no tools support	infrastructure only, no tools support	infrastructure only, no tools support	 	 	
AHCI support 	 	 	 	 	 	 	 	 	
PVUSB 	 	 	 	 	 	 	 	 	
HVM USB passthrough 	 	 	 	 	 	 	 	 	
QEMU backend hotplugging 	 	 	 	 	 	 	 	 	
Soft-Reset 	 	 	 	 	 	 	 	 	
3rd Party 	3rd Party 	3rd Party 	3rd Party 	3rd Party 	3rd Party 	3rd Party 	3rd Party	3rd Party	3rd Party
libvirt driver for XL 	[ 29 ] 	[ 29 ] 	[ 16 ] [ 29 ] 	[ 16 ] [ 29 ] 	[ 16 ] [ 29 ] 	[ 16 ] [ 29 ] 	 	 	
Tooling 	Tooling 	Tooling 	Tooling 	Tooling 	Tooling 	Tooling 	Tooling 	Tooling 	Tooling
gdbsxdebugger to debug ELF guests 	 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	 	 	
vPMUVirtual Performance Management Unit for HVM guests	[ 4 ] 	[ 4 ][ 12 ] 	[ 4 ][ 12 ] 	[ 4 ][ 12 ] 	[ 4 ][ 12 ] 	[ 4 ][ 12 ] 	 	 	
Serial console 	 	Add Oxford PCIe, and Broadcom TrueManage support	 	 	 	 	 	 	
xentraceperformance analysis 	 	[ 12 ] 	Added Xenalyze 	 	 	 	 	 	
== Features ==
 	Xen 4.4 	Xen 4.5 	Xen 4.6 	Xen 4.7 	Xen 4.8 	Xen 4.9 	 	 	
Advanced Memory Management 	Advanced Memory Management 	Advanced Memory Management 	Advanced Memory Management 	Advanced Memory Management 	Advanced Memory Management 	Advanced Memory Management 	Advanced Memory Management 	Advanced Memory Management 	Advanced Memory Management
Memory Ballooning 	 	 	 	 	 	 	 	 	
Memory Sharingallow sharing of identical pages between HVM guests 	preview [ 3 ] 	preview [ 3 ][ 12 ] 	preview [ 3 ][ 12 ] 	preview [ 3 ][ 12 ] 	preview [ 3 ][ 12 ] 	preview [ 3 ][ 12 ] 	 	 	
Memory Pagingallow pages belonging to HVM guests to be paged to disk 	preview [ 3 ] 	preview [ 3 ][ 12 ] 	preview [ 3 ][ 12 ] 	preview [ 3 ][ 12 ] 	preview [ 3 ][ 12 ] 	preview [ 3 ][ 12 ] 	 	 	
TMEM - Transcendent Memory 	experimental [ 2 ] 	experimental [ 2 ][ 12 ] 	experimental [ 2 ][ 12 ] 	experimental [ 2 ][ 12 ] 	experimental [ 2 ][ 12 ] 	experimental [ 2 ][ 12 ] 	 	 	
Resource Management 	Resource Management 	Resource Management 	Resource Management 	Resource Management 	Resource Management 	Resource Management 	Resource Management 	Resource Management 	Resource Management
Cpupooladvanced partitioning 	 	 	 	 	 	 	 	 	
Credit 2 Schedulerdesigned for latency-sensitive workloads and very large systems. 	 	experimental 	experimental 	experimental (significant additions) 	 	 	 	 	
RTDS Based SchedulerReal-time CPU scheduler built to provide guaranteed CPU capacity to guest VMs on SMP hosts. 	 	experimental 	experimental 	experimental (significant additions) 	experimental 	experimental 	 	 	
Null SchedulerScheduler for embedded workloads where 0-scheduling overhead is required 	 	 	 	 	 	preview [ 28 ] 	 	 	
NUMA scheduler affinity 	 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	 	 	
Scalability 	Scalability 	Scalability 	Scalability 	Scalability 	Scalability 	Scalability 	Scalability 	Scalability 	Scalability
1GB/2MB super page support 	 	 	 	 	 	 	 	 	
Deliver events to PVHVM guests using Xen event channels 	 	 	 	 	 	 	 	 	
Fair locks (ticket-locks) 	 	 	 	 	 	 	 	 	
High Availability and Fault Tolerance 	High Availability and Fault Tolerance 	High Availability and Fault Tolerance 	High Availability and Fault Tolerance 	High Availability and Fault Tolerance 	High Availability and Fault Tolerance 	High Availability and Fault Tolerance 	High Availability and Fault Tolerance 	High Availability and Fault Tolerance 	High Availability and Fault Tolerance
Live Migration, Save & Restore 	 	[ 12 ] 	[ 18 ] Migration v2 	[ 23 ] 	[ 23 ] 	[ 23 ] 	 	 	
Remus Fault Tolerance 	 	improvements for COLO [ 10 ][ 12 ] 	Remus ported to Migration v2 	 	 	 	 	 	
COLO Manager 	 	 	 	experimental [ 24 ] 	experimental [ 24 ] 	experimental [ 24 ] 	 	 	
X86 vMCEForward Machine Check Exceptions to Appropriate guests 	 	 	 	 	 	 	 	 	
Network and Storage 	Network and Storage 	Network and Storage 	Network and Storage 	Network and Storage 	Network and Storage 	Network and Storage 	Network and Storage 	Network and Storage 	Network and Storage
 	 	 	 	 	 	 	 	 	
Online resize of virtual disks 	 	 	 	 	 	 	 	 	
Security (also see this presentation or this document) 	Security (also see this presentation or this document)	Security (also see this presentation or this document)	Security (also see this presentation or this document)	Security (also see this presentation or this document)	Security (also see this presentation or this document)	Security (also see this presentation or this document)	Security (also see this presentation or this document)	Security (also see this presentation or this document)	Security (also see this presentation or this document)
Driver Domains 	 	 	 	 	 	 	 	 	
Device Model Stub Domains 	 	[ 12 ] 	[ 12 ][ 17 ] 	[ 12 ][ 17 ] 	[ 12 ][ 17 ] 	[ 12 ][ 17 ] 	 	 	
Kconfig 	 	 	 	experimental 	experimental 	experimental 	 	 	
Live Patching 	 	 	 	preview [ 22 ] 	preview (added ARM support) 	[ 27 ], ARM support still in preview 	 	 	
Virtual Machine Introspection (Memaccess and VM Event APIs)enabling integration of 3rd party security solutions into Xen virtualized environments	 	improvements[ 12 ] 	[ 19 ] reworked with ARM support, added VM Event APIs 	improvements 	 	 	 	 	
XSM & FLASKmandatory access control policy providing fine-grained controls over Xen domains, similar to SELinux 	 	 	[ 17 ] 	[ 17 ] 	[ 17 ] 	[ 17 ] 	 	 	
XSM & FLASK support for IS_PRIV 	 	 	[ 17 ] 	[ 17 ] 	[ 17 ] 	[ 17 ] 	 	 	
vTPM Support 	 	 	vTPM 2.0 	 	 	 	 	 	
== Interoperability / Hardware Support ==
 	Xen 4.4	Xen 4.5 	Xen 4.6 	Xen 4.7 	Xen 4.8 	Xen 4.9 	 	 	
X86 	X86 	X86 	X86 	X86 	X86 	X86 	X86	X86	X86
X86 Nested VirtualisationRunning a hypervisor inside an HVM guest	preview	preview [ 11 ]	preview [ 11 ] 	preview [ 11 ] 	preview [ 11 ]	preview, fixes [ 11 ]	 	 	
HVM PXE Stack (x86) 	gPXE 	iPXE 	iPXE 	iPXE 	iPXE 	iPXE 	 	 	
Physical CPU Hotplug 	 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	 	 	
Physical Memory Hotplug 	 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	 	 	
Support for PV kernels in bzImage format 	 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	 	 	
PCI Passthrough 	[ 12 ] 	[ 12 ][ 13 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	[ 12 ] 	 	 	
X86 Advanced Vector eXtension (AVX) 	 	 	 	 	AVX-512 	 	 	 	
Intel Platform QoS Technologies 	 	preview: CMT 	preview: CAT, MBM	preview: CDP 	preview: CDP 	preview: CDP 	 	 	
Other Intel® Xeon® Features 	 	 	 	[ 25 ] 	[ 25 ] 	[ 25 ] 	 	 	
ARM 	ARM 	ARM 	ARM 	ARM 	ARM 	ARM 	ARM	ARM	ARM
64K Guest Pages 	 	 	 	 	 	 	 	 	
ACPI / SBBR Compliance 	 	 	 	experimental; ACPI 6.0+	experimental 	experimental 	 	 	
ACPI guest support 	 	 	 	 	with UEFI 	with UEFI 	 	 	
PCSI Compatibility 	 	v0.1 & 0.2 	 	v1.0 	v1.0 	v1.0 	 	 	
ARM® Interrupt Virtualization 	 	GiC v2 	GiC v2m/GiC v3 	improvements to v2/v3 	 	 	 	 	
Wallclock support 	 	 	 	 	 	 	 	 	
== Device Models and Virtual Firmware ==
 	Xen 4.4 	Xen 4.5 	Xen 4.6 	Xen 4.7 	Xen 4.8 	Xen 4.9 	 	 	
Device Models and Virtual Firmware for HVM guests 	Device Models and Virtual Firmware for HVM guests	Device Models and Virtual Firmware for HVM guests	Device Models and Virtual Firmware for HVM guests	Device Models and Virtual Firmware for HVM guests	Device Models and Virtual Firmware for HVM guests	Device Models and Virtual Firmware for HVM guests	Device Models and Virtual Firmware for HVM guests	Device Models and Virtual Firmware for HVM guests	Device Models and Virtual Firmware for HVM guests
For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures
Traditional Device ModelDevice emulator based on Xen fork of Qemu 	 	 	 	 	 	 	 	 	
Qemu Upstream Device ModelDevice emulator based on upstream Qemu 	default, unless stubdomains are used 	default, unless stubdomains are used 	default, unless stubdomains are used 	default, unless stubdomains are used 	default, unless stubdomains are used 	default, unless stubdomains are used 	 	 	
DMOP (Device Model Operation Hypercall) 	 	 	 	 	 	[ 28 ] 	 	 	
ROMBIOSBIOS used with traditional device model only 	 	 	 	 	 	 	 	 	
SeaBIOSBIOS used with upstream qemu device model and XL only 	 	 	 	 	 	 	 	 	
OVMF/TianocoreUEFI Firmware used with upstream qemu device model and XL only	experimental [ 4 ] 	experimental [ 4 ] 	experimental [ 4 ] + ARM support 	experimental [ 4 ] + ARM support 	experimental [ 4 ] + ARM support 	experimental [ 4 ] + ARM support 	 	 	
PV Bootloader support 	PV Bootloader support 	PV Bootloader support 	PV Bootloader support 	PV Bootloader support 	PV Bootloader support 	PV Bootloader support 	PV Bootloader support 	PV Bootloader support 	PV Bootloader support
For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures 	For X86 Architectures
PyGrub support for GRUB 2 	 	 	 	 	 	 	 	 	
PyGrub support for /boot on ext4 	 	 	 	 	 	 	 	 	
pvnetboot supportBootloader supporting network boot of PV guests 	 	 	 	 	 	 	 	 	
== PV Protocols and Drivers ==
 	Xen 4.4	Xen 4.5	Xen 4.6	Xen 4.7	Xen 4.8	Xen 4.9
Commonnet, block, console, keyboard=kbd, mouse framebuffer=fb 	 	 	 	 	 	[ 28 ]
USB 	 	 	 	 	 	[ 28 ]
pvcallsPOSIX function call forwarding 	 	 	 	 	 	preview [ 28 ]
9pfsshare a filesystem between VMs (a requirement for adding Xen support to many container engines)	 	 	 	 	 	preview [ 28 ]
sndif (sound device)used in automotive/embedded 	 	 	 	 	 	preview [ 28 ]
displif (display)used in automotive/embedded 	 	 	 	 	 	preview [ 28 ]
== Notes ==
[ 0 ] Compile time limit, can be increased
[ 1 ] Requires hardware virtualisation support
[ 2 ] Disabled by default (enable with hypervisor command line option). Not supported in production and doesn't have full security support
[ 3 ] Preview, due to limited tools support. Hypervisor side in good shape
[ 4 ] Disabled by default (enable with hypervisor command line option)
[ 5 ] Used as a fallback if blkback and/or blktap2 are not available
[ 6 ] See Xen ARM with Virtualization Extensions; basic functionality implemented; lack of real hardware to validate against
[ 7 ] Limited by supported host memory
[ 8 ] Tested on Broadcom 7445D0 A15, Midway (Calxeda), Odroid-XU, OMAP5, OMAP6, DRA7 (Texas Instrument), Exynos5 (Samsung), SunXI (AllWinner) aka A20/A21, CubieTruck, CubieBoard 
[ 9 ] Tested on Vexpress (ARM Ltd.), Seattle (AMD), Mustang (Applied Micro-X-Gene), McDivitt aka HP Moonshot cartridge (Applied Micro X-Gene) 
[ 10 ] Remus has been ported to XL and has been tested with COLO which is currently outside the Xen tree, but planned to be included in Xen 4.6. Also see Remus Toolkit Differences explaining differences between Remus with XM (not supported in Xen 4.5) and XL
[ 11 ] There are a number of reported crashes that have not yet been fixed and some known limitations
[ 12 ] Not yet supported on ARM; for a more detailed update on what is supported on ARM see here and here
[ 13 ] The PCI passthrough features did not make it on time for Xen 4.5, but doing passthrough of MMIO regions did. In the ARM world it is quite common to have no PCIe devices and to only access devices using MMIO regions. As such this feature allows us to have driver domains be in charge of network or storage devices.
[ 14 ] Added the following platforms to [ 8 ]: Renesas R-Car Gen2, Huawei hip04-d04 
[ 15 ] Added the following platforms to [ 9 ]: Thunder X (partial), Xilinx ZynqMP SoC
[ 16 ] Now tested as part of Xen Project Test Lab and OpenStack CI Loop
[ 17 ] Now tested as part of Xen Project Test Lab
[ 18 ] Migration v2: see and . VM migration using libvirt between two hosts is now tested. Live Migration between hosts of different Xen versions is now tested.
[ 19 ] The memory event subsystem has been reworked and extended to a new VM event subsystem. The new VM event subsystems supports both the ARM and x86 architectures. 
[ 20 ] Passthrough for non-PCI devices allows users to passthrough devices via partial device trees.
[ 21 ] Dates for historical releases have not be researched.
[ 22 ] The code for hypervisor live patching is NOT enabled by default. When compiling the hypervisor one must change the config to build it. Note that Live Patching is currently only supported on x86. For more information on live patching, see LivePatch.
[ 23 ] CPU ID Levelling enables migration of VM’s between a larger range of non-identical hosts than previously supported.
[ 24 ] The COLO Manager has been fully integrated as an experimental feature into Xen 4.7. Note that the COLO Block Replication and COLO Proxy components, both of which are QEMU components, are currently still reviewed by the QEMU community. Both components are available as out-of-tree add-ons to the Xen Project Hypervisor, until fully integrated into QEMU.
[ 25 ] Added experimental support for VT-d Posted Interrupts, VMX TSC Scaling, Memory Protection Keys
[ 26 ] Removed support for Huawei hip04-d04 
[ 27 ] See xen-devel discussion "livepatch: Declare live patching as a	supported feature" 
[ 28 ] See xen-devel discussion "Updating https://wiki.xenproject.org/wiki/Xen_Project_Release_Features to reflect support status of new features"
[ 29 ] Security support via libvirt.org/securityprocess
Category:Xen Category:Users Category:Fundamentals
Category:Xen 4.4
Category:Xen 4.5
Category:Xen 4.6
Category:Xen 4.7
Category:Xen 4.8
Category:Xen 4.9