added changes for 4.16

Author: Vaishali-gif-rh

modules/virt-hot-plugging-memory.adoc

@@ -0,0 +1,32 @@
+@@ -0,0 +1,24 @@
+// Module included in the following assemblies:
+//
+// * virt/virtual_machines/virt-edit-vms.adoc
+
+:_mod-docs-content-type: PROCEDURE
+[id="virt-hot-plugging-memory_{context}"]
+
+= Hot plugging memory on a virtual machine
+
+You can add or remove the amount of memory allocated to a virtual machine (VM) without having to restart the VM by using the {product-title} web console.
+
+.Procedure
+
+. Navigate to *Virtualization* -> *VirtualMachines*.
+. Select the required VM to open the *VirtualMachine details* page.
+. On the *Configuration* tab, click *Edit CPU|Memory*.
+. Enter the desired amount of memory and click *Save*.
+
+The system applies these changes immediately. If the VM is migratable, a live migration is triggered. If not, or if the changes cannot be live-updated, a `RestartRequired` condition is added to the VM.
+
+[NOTE]
+====
+* Memory hot-plugging for virtual machines requires guest operating system support for the `virtio-mem` driver. This support depends on the driver being included and enabled within the guest operating system, not on the specific upstream kernel versions.
+
+Supported guest operating systems:
+
+* RHEL 9.4 and later
+* RHEL 8.10 and later (hot-unplug is disabled by default)
+* Other Linux guests require kernel version 5.16 or later and the `virtio-mem` kernel module
+* Windows guests require `virtio-mem` driver version 100.95.104.26200 or later
+====

virt/virtual_machines/virt-edit-vms.adoc

@@ -14,6 +14,8 @@ ifndef::openshift-rosa,openshift-dedicated[]
 To edit a VM to configure disk sharing by using virtual disks or LUN, see xref:../../virt/virtual_machines/virtual_disks/virt-configuring-shared-volumes-for-vms.adoc#virt-configuring-shared-volumes-for-vms[Configuring shared volumes for virtual machines].
 endif::openshift-rosa,openshift-dedicated[]
 
+include::modules/virt-hot-plugging-memory.adoc[leveloffset=+1]
+
 include::modules/virt-editing-vm-cli.adoc[leveloffset=+1]
 
 include::modules/virt-add-disk-to-vm.adoc[leveloffset=+1]