doc: update info for hypervisors

Update links and add info for UML hypervisor.

Change-Id: Id2a5ed802b2849c4edd5b92debe37c921bc859cc

doc/source/admin/arch.rst

@@ -51,24 +51,30 @@ availability zones. Compute supports the following hypervisors:
 
 - :ironic-doc:`Baremetal <>`
 
-- `Docker <https://www.docker.io>`__
-
 - `Hyper-V
-  <http://www.microsoft.com/en-us/server-cloud/hyper-v-server/default.aspx>`__
+  <https://docs.microsoft.com/en-us/windows-server/virtualization/hyper-v/hyper-v-technology-overview>`__
 
 - `Kernel-based Virtual Machine (KVM)
-  <http://www.linux-kvm.org/page/Main_Page>`__
+  <https://www.linux-kvm.org/page/Main_Page>`__
 
-- `Linux Containers (LXC) <https://linuxcontainers.org/>`__
+- `Linux Containers (LXC) <https://linuxcontainers.org>`__
 
-- `Quick Emulator (QEMU) <http://wiki.qemu.org/Manual>`__
+- `PowerVM <https://www.ibm.com/us-en/marketplace/ibm-powervm>`__
 
-- `User Mode Linux (UML) <http://user-mode-linux.sourceforge.net/>`__
+- `Quick Emulator (QEMU) <https://wiki.qemu.org/Manual>`__
+
+- `User Mode Linux (UML) <http://user-mode-linux.sourceforge.net>`__
+
+- `Virtuozzo <https://www.virtuozzo.com/products/vz7.html>`__
 
 - `VMware vSphere
   <https://www.vmware.com/support/vsphere-hypervisor.html>`__
 
-- `Xen <http://www.xen.org/support/documentation.html>`__
+- `Xen (using libvirt) <https://www.xenproject.org>`__
+
+- `XenServer <https://xenserver.org>`__
+
+- `zVM <https://www.ibm.com/it-infrastructure/z/zvm>`__
 
 For more information about hypervisors, see
 :doc:`/admin/configuration/hypervisors`

doc/source/admin/configuration/hypervisors.rst

@@ -2,6 +2,9 @@
 Hypervisors
 ===========
 
+.. TODO: Add UML (User-Mode Linux) hypervisor to the following list when its
+   dedicated documentation is ready.
+
 .. toctree::
    :maxdepth: 1
 
@@ -55,19 +58,27 @@ The following hypervisors are supported:
   Machines supported via libvirt virt_type=parallels. The supported formats
   include ploop and qcow2 images.
 
-* `PowerVM`_ Server virtualization with IBM PowerVM for AIX, IBM i, and Linux
+* `PowerVM`_ - Server virtualization with IBM PowerVM for AIX, IBM i, and Linux
   workloads on the Power Systems platform.
 
-* `zVM`_ Server virtualization on z Systems and IBM LinuxONE, it can run Linux,
+* `zVM`_ - Server virtualization on z Systems and IBM LinuxONE, it can run Linux,
   z/OS and more.
 
-.. _KVM: http://www.linux-kvm.org/page/Main_Page
-.. _LXC: https://linuxcontainers.org/
-.. _QEMU: http://wiki.qemu.org/Manual
-.. _VMware vSphere: https://www.vmware.com/support/vsphere-hypervisor
-.. _Xen (using libvirt): http://www.xenproject.org
-.. _XenServer: http://xenserver.org
-.. _Hyper-V: https://azure.microsoft.com/en-us/
-.. _Virtuozzo: https://www.virtuozzo.com/products/vip.html#product-virtuozzo/
+* `UML`_ - User-Mode Linux is a safe, secure way of running Linux versions and Linux
+  processes.
+
+* `Ironic`_ - OpenStack project which provisions bare metal (as opposed to virtual)
+  machines.
+
+.. _KVM: https://www.linux-kvm.org/page/Main_Page
+.. _LXC: https://linuxcontainers.org
+.. _QEMU: https://wiki.qemu.org/Manual
+.. _VMware vSphere: https://www.vmware.com/support/vsphere-hypervisor.html
+.. _Xen (using libvirt): https://www.xenproject.org
+.. _XenServer: https://xenserver.org
+.. _Hyper-V: https://docs.microsoft.com/en-us/windows-server/virtualization/hyper-v/hyper-v-technology-overview
+.. _Virtuozzo: https://www.virtuozzo.com/products/vz7.html
 .. _PowerVM: https://www.ibm.com/us-en/marketplace/ibm-powervm
 .. _zVM: https://www.ibm.com/it-infrastructure/z/zvm
+.. _UML: http://user-mode-linux.sourceforge.net
+.. _Ironic: https://docs.openstack.org/ironic/latest/

doc/source/user/support-matrix.rst

@@ -2,6 +2,9 @@
 Feature Support Matrix
 ======================
 
+.. TODO: Add UML (User-Mode Linux) hypervisor and its support status
+   for the listed features to the support matrix.
+
 When considering which capabilities should be marked as mandatory the
 following general guiding principles were applied