diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c
index 23a38763c1d1f..7ee37d996e157 100644
--- a/drivers/iommu/intel/svm.c
+++ b/drivers/iommu/intel/svm.c
@@ -757,6 +757,10 @@ static irqreturn_t prq_event_thread(int irq, void *d)
 			goto bad_req;
 		}
 
+		/* Drop Stop Marker message. No need for a response. */
+		if (unlikely(req->lpig && !req->rd_req && !req->wr_req))
+			goto prq_advance;
+
 		if (!svm || svm->pasid != req->pasid) {
 			/*
 			 * It can't go away, because the driver is not permitted