diff options
| author | Ray Ni <ray.ni@intel.com> | 2022-09-29 12:48:19 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-10-09 08:22:02 +0000 |
| commit | 1217f59d23b7c1cc6fa3be658f9ec00bfe0854c0 (patch) | |
| tree | fc520c3c716cc6a3ef2c939d15ccf2b1fa0f73fc /UefiCpuPkg/Include | |
| parent | cc070b88e4ffef9d7acf3965058a4ab737f3cbde (diff) | |
| download | edk2-1217f59d23b7c1cc6fa3be658f9ec00bfe0854c0.tar.gz edk2-1217f59d23b7c1cc6fa3be658f9ec00bfe0854c0.tar.bz2 edk2-1217f59d23b7c1cc6fa3be658f9ec00bfe0854c0.zip | |
UefiCpuPkg/MtrrLib: Fix MtrrSetAllMtrrs to handle absent fixed MTRRs.
Update MtrrSetAllMtrrs to not access fixed MTRRs if CPU doesn't
support them.
Signed-off-by: Ray Ni <ray.ni@intel.com>
Signed-off-by: Yuanhao Xie <yuanhao.xie@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Diffstat (limited to 'UefiCpuPkg/Include')
| -rw-r--r-- | UefiCpuPkg/Include/Library/MtrrLib.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/UefiCpuPkg/Include/Library/MtrrLib.h b/UefiCpuPkg/Include/Library/MtrrLib.h index 683d9f2c14..94cf615901 100644 --- a/UefiCpuPkg/Include/Library/MtrrLib.h +++ b/UefiCpuPkg/Include/Library/MtrrLib.h @@ -1,7 +1,7 @@ /** @file
MTRR setting library
- Copyright (c) 2008 - 2020, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2008 - 2023, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -214,9 +214,12 @@ MtrrGetAllMtrrs ( /**
This function sets all MTRRs (variable and fixed)
- @param[in] MtrrSetting A buffer to hold all MTRRs content.
+ Note: The behavior of this function is to program everything in MtrrSetting to hardware.
+ MTRR might not be enabled due to enable bit is clear in MtrrSetting->MtrrDefType.
- @return The pointer of MtrrSetting
+ @param[in] MtrrSetting A buffer holding all MTRRs content.
+
+ @retval The pointer of MtrrSetting
**/
MTRR_SETTINGS *
|