diff --git a/sim/regression-wally b/sim/regression-wally
index c70177206..07613aeab 100755
--- a/sim/regression-wally
+++ b/sim/regression-wally
@@ -136,7 +136,8 @@ tests64gc = ["arch64f", "arch64d", "arch64i", "arch64zba", "arch64zbb", "arch64z
 if (coverage):  # delete all but 64gc tests when running coverage
     configs = []
 #    tests64gc = ["coverage64gc", "arch64f", "arch64d", "arch64i", "arch64priv", "arch64c",  "arch64m", 
-    tests64gc = ["coverage64gc", "arch64i", "arch64priv", "arch64c",  "arch64m", 
+    tests64gc = ["coverage64gc", "arch64f", "arch64d", "arch64i", "arch64priv", "arch64c",  "arch64m",
+#    tests64gc = ["coverage64gc", "arch64i", "arch64priv", "arch64c",  "arch64m", 
                  "arch64zi", "wally64a", "wally64periph", "wally64priv", 
                  "arch64zba",  "arch64zbb",  "arch64zbc",  "arch64zbs", 
                  "imperas64f", "imperas64d", "imperas64c", "imperas64i"] 
diff --git a/tests/coverage/lsu.S b/tests/coverage/lsu.S
new file mode 100644
index 000000000..63fbda8da
--- /dev/null
+++ b/tests/coverage/lsu.S
@@ -0,0 +1,33 @@
+///////////////////////////////////////////
+// lsu.S
+//
+// Written: Kevin Box and Miles Cook kbox@hmc.edu mdcook@hmc.edu 26 March 2023
+//
+// Purpose: Test coverage for lsu
+//
+// A component of the CORE-V-WALLY configurable RISC-V project.
+// 
+// Copyright (C) 2021-23 Harvey Mudd College & Oklahoma State University
+//
+// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
+//
+// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file 
+// except in compliance with the License, or, at your option, the Apache License version 2.0. You 
+// may obtain a copy of the License at
+//
+// https://solderpad.org/licenses/SHL-2.1/
+//
+// Unless required by applicable law or agreed to in writing, any work distributed under the 
+// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
+////////////////////////////////////////////////////////////////////////////////////////////////
+
+// load code to initalize stack, handle interrupts, terminate
+#include "WALLY-init-lib.h"
+
+main:
+
+    sfence.vma x0, x0 // sfence.vma to assert TLBFlush
+
+    j done