MdeModulePkg/Universal/Variable/RuntimeDxe/SpeculationBarrierSmm.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
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 ();
}