diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 3a328e5d46..4a8059ebd1 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -6578,7 +6578,8 @@ qemuDomainSaveImageStartVM(virConnectPtr conn,
     if (qemuProcessStart(conn, driver, vm, cookie ? cookie->cpu : NULL,
                          asyncJob, "stdio", *fd, path, NULL,
                          VIR_NETDEV_VPORT_PROFILE_OP_RESTORE,
-                         VIR_QEMU_PROCESS_START_PAUSED) == 0)
+                         VIR_QEMU_PROCESS_START_PAUSED |
+                         VIR_QEMU_PROCESS_START_GEN_VMID) == 0)
         restored = true;
 
     if (intermediatefd != -1) {
@@ -15852,6 +15853,15 @@ qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot,
                     compatible = qemuDomainCheckABIStability(driver, vm, config);
                 }
 
+                /* If using VM GenID, there is no way currently to change
+                 * the genid for the running guest, so set an error and
+                 * mark as incompatible. */
+                if (compatible && config->genidRequested) {
+                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                                   _("domain genid update requires restart"));
+                    compatible = false;
+                }
+
                 if (!compatible) {
                     virErrorPtr err = virGetLastError();
 
@@ -15932,7 +15942,8 @@ qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot,
                                   cookie ? cookie->cpu : NULL,
                                   QEMU_ASYNC_JOB_START, NULL, -1, NULL, snap,
                                   VIR_NETDEV_VPORT_PROFILE_OP_CREATE,
-                                  VIR_QEMU_PROCESS_START_PAUSED);
+                                  VIR_QEMU_PROCESS_START_PAUSED |
+                                  VIR_QEMU_PROCESS_START_GEN_VMID);
             virDomainAuditStart(vm, "from-snapshot", rc >= 0);
             detail = VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT;
             event = virDomainEventLifecycleNewFromObj(vm,
@@ -16018,7 +16029,7 @@ qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot,
                      VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED)) {
             /* Flush first event, now do transition 2 or 3 */
             bool paused = (flags & VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED) != 0;
-            unsigned int start_flags = 0;
+            unsigned int start_flags = VIR_QEMU_PROCESS_START_GEN_VMID;
 
             start_flags |= paused ? VIR_QEMU_PROCESS_START_PAUSED : 0;
 
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index ac2049b95d..5f5759c9c8 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -6050,6 +6050,39 @@ qemuProcessPrepareHost(virQEMUDriverPtr driver,
 }
 
 
+/**
+ * qemuProcessGenID:
+ * @vm: Pointer to domain object
+ * @flags: qemuProcessStartFlags
+ *
+ * If this domain is requesting to use genid, then update the GUID
+ * value if the VIR_QEMU_PROCESS_START_GEN_VMID flag is set. This
+ * flag is set on specific paths during domain start processing when
+ * there is the possibility that the VM is potentially re-executing
+ * something that has already been executed before.
+ */
+static int
+qemuProcessGenID(virDomainObjPtr vm,
+                 unsigned int flags)
+{
+    if (!vm->def->genidRequested)
+        return 0;
+
+    /* If we are coming from a path where we must provide a new gen id
+     * value regardless of whether it was previously generated or provided,
+     * then generate a new GUID value before we build the command line. */
+    if (flags & VIR_QEMU_PROCESS_START_GEN_VMID) {
+        if (virUUIDGenerate(vm->def->genid) < 0) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("failed to regenerate genid"));
+            return -1;
+        }
+    }
+
+    return 0;
+}
+
+
 /**
  * qemuProcessLaunch:
  *
@@ -6102,7 +6135,8 @@ qemuProcessLaunch(virConnectPtr conn,
     virCheckFlags(VIR_QEMU_PROCESS_START_COLD |
                   VIR_QEMU_PROCESS_START_PAUSED |
                   VIR_QEMU_PROCESS_START_AUTODESTROY |
-                  VIR_QEMU_PROCESS_START_NEW, -1);
+                  VIR_QEMU_PROCESS_START_NEW |
+                  VIR_QEMU_PROCESS_START_GEN_VMID, -1);
 
     cfg = virQEMUDriverGetConfig(driver);
 
@@ -6126,6 +6160,9 @@ qemuProcessLaunch(virConnectPtr conn,
         goto cleanup;
     logfile = qemuDomainLogContextGetWriteFD(logCtxt);
 
+    if (qemuProcessGenID(vm, flags) < 0)
+        goto cleanup;
+
     VIR_DEBUG("Building emulator command line");
     if (!(cmd = qemuBuildCommandLine(driver,
                                      qemuDomainLogContextGetManager(logCtxt),
@@ -6491,7 +6528,8 @@ qemuProcessStart(virConnectPtr conn,
 
     virCheckFlagsGoto(VIR_QEMU_PROCESS_START_COLD |
                       VIR_QEMU_PROCESS_START_PAUSED |
-                      VIR_QEMU_PROCESS_START_AUTODESTROY, cleanup);
+                      VIR_QEMU_PROCESS_START_AUTODESTROY |
+                      VIR_QEMU_PROCESS_START_GEN_VMID, cleanup);
 
     if (!migrateFrom && !snapshot)
         flags |= VIR_QEMU_PROCESS_START_NEW;
diff --git a/src/qemu/qemu_process.h b/src/qemu/qemu_process.h
index a0e34b1c85..5098eacfe8 100644
--- a/src/qemu/qemu_process.h
+++ b/src/qemu/qemu_process.h
@@ -80,6 +80,7 @@ typedef enum {
     VIR_QEMU_PROCESS_START_AUTODESTROY  = 1 << 2,
     VIR_QEMU_PROCESS_START_PRETEND      = 1 << 3,
     VIR_QEMU_PROCESS_START_NEW          = 1 << 4, /* internal, new VM is starting */
+    VIR_QEMU_PROCESS_START_GEN_VMID     = 1 << 5, /* Generate a new VMID */
 } qemuProcessStartFlags;
 
 int qemuProcessStart(virConnectPtr conn,