diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index 7f7013e115e5a28dc0e275e70facb963f51de333..a65d638ab81d63c45cedbe7563360bbe6ef2a920 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -4135,6 +4135,25 @@ qemuMonitorGetIOThreads(qemuMonitorPtr mon,
 }
 
 
+/**
+ * qemuMonitorSetIOThread:
+ * @mon: Pointer to the monitor
+ * @iothreadInfo: filled IOThread info with data
+ *
+ * Alter the specified IOThread's IOThreadInfo values.
+ */
+int
+qemuMonitorSetIOThread(qemuMonitorPtr mon,
+                       qemuMonitorIOThreadInfoPtr iothreadInfo)
+{
+    VIR_DEBUG("iothread=%p", iothreadInfo);
+
+    QEMU_CHECK_MONITOR(mon);
+
+    return qemuMonitorJSONSetIOThread(mon, iothreadInfo);
+}
+
+
 /**
  * qemuMonitorGetMemoryDeviceInfo:
  * @mon: pointer to the monitor
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index c2991e2b161f0f7cafe4cd07efe20423834446a0..66bfdb0e5c179e97cf69463271cffaf0ff9a6d92 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -1120,9 +1120,14 @@ struct _qemuMonitorIOThreadInfo {
     unsigned long long poll_max_ns;
     unsigned int poll_grow;
     unsigned int poll_shrink;
+    bool set_poll_max_ns;
+    bool set_poll_grow;
+    bool set_poll_shrink;
 };
 int qemuMonitorGetIOThreads(qemuMonitorPtr mon,
                             qemuMonitorIOThreadInfoPtr **iothreads);
+int qemuMonitorSetIOThread(qemuMonitorPtr mon,
+                           qemuMonitorIOThreadInfoPtr iothreadInfo);
 
 typedef struct _qemuMonitorMemoryDeviceInfo qemuMonitorMemoryDeviceInfo;
 typedef qemuMonitorMemoryDeviceInfo *qemuMonitorMemoryDeviceInfoPtr;
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 2e92984b4496d7ea17309db5d4e86f62e2812be8..5a806f6c0e3392079edaf77a3668d77e65d1f4ef 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -7474,6 +7474,41 @@ qemuMonitorJSONGetIOThreads(qemuMonitorPtr mon,
 }
 
 
+int
+qemuMonitorJSONSetIOThread(qemuMonitorPtr mon,
+                           qemuMonitorIOThreadInfoPtr iothreadInfo)
+{
+    int ret = -1;
+    char *path = NULL;
+    qemuMonitorJSONObjectProperty prop;
+
+    if (virAsprintf(&path, "/objects/iothread%u",
+                    iothreadInfo->iothread_id) < 0)
+        goto cleanup;
+
+#define VIR_IOTHREAD_SET_PROP(propName, propVal) \
+    if (iothreadInfo->set_##propVal) { \
+        memset(&prop, 0, sizeof(qemuMonitorJSONObjectProperty)); \
+        prop.type = QEMU_MONITOR_OBJECT_PROPERTY_INT; \
+        prop.val.iv = iothreadInfo->propVal; \
+        if (qemuMonitorJSONSetObjectProperty(mon, path, propName, &prop) < 0) \
+            goto cleanup; \
+    }
+
+    VIR_IOTHREAD_SET_PROP("poll-max-ns", poll_max_ns);
+    VIR_IOTHREAD_SET_PROP("poll-grow", poll_grow);
+    VIR_IOTHREAD_SET_PROP("poll-shrink", poll_shrink);
+
+#undef VIR_IOTHREAD_SET_PROP
+
+    ret = 0;
+
+ cleanup:
+    VIR_FREE(path);
+    return ret;
+}
+
+
 int
 qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitorPtr mon,
                                    virHashTablePtr info)
diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h
index da267b15b06e9ebbb223efcf4599d48dca1086df..c3abd0ddf04ffbc11428140f98ade33a3b308253 100644
--- a/src/qemu/qemu_monitor_json.h
+++ b/src/qemu/qemu_monitor_json.h
@@ -502,6 +502,10 @@ int qemuMonitorJSONGetIOThreads(qemuMonitorPtr mon,
                                 qemuMonitorIOThreadInfoPtr **iothreads)
     ATTRIBUTE_NONNULL(2);
 
+int qemuMonitorJSONSetIOThread(qemuMonitorPtr mon,
+                               qemuMonitorIOThreadInfoPtr iothreadInfo)
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
+
 int qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitorPtr mon,
                                        virHashTablePtr info)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);