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path: root/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c
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Diffstat (limited to 'SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c')
-rw-r--r--SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c b/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c
index 8247836a63..de0a32ee87 100644
--- a/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c
+++ b/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c
@@ -519,6 +519,10 @@ SmmVariableHandler (
break;
case SMM_VARIABLE_FUNCTION_READY_TO_BOOT:
+ if (AtRuntime()) {
+ Status = EFI_UNSUPPORTED;
+ break;
+ }
ReclaimForOS ();
Status = EFI_SUCCESS;
break;