diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 8d415563e05b..57743edfb4e2 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -4683,7 +4683,10 @@ special_insn:
 			goto done;
 	}
 
-	ctxt->eflags &= ~EFLG_RF;
+	if (ctxt->rep_prefix && (ctxt->d & String))
+		ctxt->eflags |= EFLG_RF;
+	else
+		ctxt->eflags &= ~EFLG_RF;
 
 	if (ctxt->execute) {
 		if (ctxt->d & Fastop) {
@@ -4824,6 +4827,7 @@ writeback:
 			}
 			goto done; /* skip rip writeback */
 		}
+		ctxt->eflags &= ~EFLG_RF;
 	}
 
 	ctxt->eip = ctxt->_eip;