diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/MdeModulePkg/Universal/Variable/RuntimeDxe/SpeculationBarrierSmm.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/MdeModulePkg/Universal/Variable/RuntimeDxe/SpeculationBarrierSmm.c')
| -rw-r--r-- | roms/edk2/MdeModulePkg/Universal/Variable/RuntimeDxe/SpeculationBarrierSmm.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/roms/edk2/MdeModulePkg/Universal/Variable/RuntimeDxe/SpeculationBarrierSmm.c b/roms/edk2/MdeModulePkg/Universal/Variable/RuntimeDxe/SpeculationBarrierSmm.c new file mode 100644 index 000000000..7107c0429 --- /dev/null +++ b/roms/edk2/MdeModulePkg/Universal/Variable/RuntimeDxe/SpeculationBarrierSmm.c @@ -0,0 +1,26 @@ +/** @file
+ Barrier to stop speculative execution (SMM version).
+
+Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/BaseLib.h>
+#include "Variable.h"
+
+/**
+ This service is consumed by the variable modules to place a barrier to stop
+ speculative execution.
+
+ Ensures that no later instruction will execute speculatively, until all prior
+ instructions have completed.
+
+**/
+VOID
+VariableSpeculationBarrier (
+ VOID
+ )
+{
+ SpeculationBarrier ();
+}
|