added code

Author: Vaishali-gif-rh

modules/virt-hot-plugging-memory.adoc

@@ -20,5 +20,12 @@ The system applies these changes immediately. If the VM is migratable, a live mi
 
 [NOTE]
 ====
-Linux guests require a kernel version of 5.16 or later and Windows guests require the latest `viomem` drivers.
+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 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
 ====