diff --git a/src/arch/arm/fastmodel/iris/thread_context.hh b/src/arch/arm/fastmodel/iris/thread_context.hh
index 9c7ed4ed8a..7db253c8d0 100644
--- a/src/arch/arm/fastmodel/iris/thread_context.hh
+++ b/src/arch/arm/fastmodel/iris/thread_context.hh
@@ -293,7 +293,7 @@ class ThreadContext : public ::ThreadContext
     void
     clearArchRegs() override
     {
-        panic("%s not implemented.", __FUNCTION__);
+        warn("Ignoring clearArchRegs()");
     }
 
     //