diff --git a/src/dev/reg_bank.hh b/src/dev/reg_bank.hh
index 3d8dc576cb..3a89a00ab6 100644
--- a/src/dev/reg_bank.hh
+++ b/src/dev/reg_bank.hh
@@ -759,6 +759,9 @@ class RegisterBank : public RegisterBankBase
         // constructor. This is intended to be used in a resetter function.
         const Data &initialValue() const { return _resetData; }
 
+        // Reset the initial value, which is normally set in the constructor,
+        // to the register's current value.
+        void resetInitialValue() { _resetData = _data; }
 
         /*
          * Interface for accessing the register's state, for use by the
diff --git a/src/dev/reg_bank.test.cc b/src/dev/reg_bank.test.cc
index 4439526e35..c618ef16d4 100644
--- a/src/dev/reg_bank.test.cc
+++ b/src/dev/reg_bank.test.cc
@@ -881,6 +881,28 @@ TEST_F(TypedRegisterTest, DefaultResetter)
     EXPECT_EQ(reg.get(), initial_value);
 }
 
+// Set initial value later than constructor
+TEST_F(TypedRegisterTest, LateInitialValueAssignment)
+{
+    BackingType initial_value = reg.get();
+    BackingType new_initial_value = initial_value + 1;
+
+    reg.get() = new_initial_value;
+    reg.resetInitialValue();
+
+    EXPECT_EQ(reg.get(), new_initial_value);
+    EXPECT_EQ(reg.initialValue(), new_initial_value);
+
+    reg.get() = new_initial_value + 1;
+    EXPECT_EQ(reg.get(), new_initial_value + 1);
+    EXPECT_EQ(reg.initialValue(), new_initial_value);
+
+    reg.reset();
+
+    EXPECT_EQ(reg.get(), new_initial_value);
+    EXPECT_EQ(reg.initialValue(), new_initial_value);
+}
+
 // Set a custom resetter for a register.
 TEST_F(TypedRegisterTest, Resetter)
 {