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UefiCpuPkg: Remove alignment check when calculate microcode size. 

This patch removes the unnecessary alignment check on microcode patch
TotalSize introduced by commit d786a172. The TotalSize has already been
checked with 1K alignment and MAX_ADDRESS in previous code as below:

    if ( (UINTN)MicrocodeEntryPoint > (MAX_ADDRESS - TotalSize) ||
         ((UINTN)MicrocodeEntryPoint + TotalSize) > MicrocodeEnd ||
         (DataSize & 0x3) != 0 ||
         (TotalSize & (SIZE_1KB - 1)) != 0 ||
         TotalSize < DataSize
       ) {

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Signed-off-by: Siyuan Fu <siyuan.fu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
This commit is contained in:
Siyuan Fu 2020-01-03 15:11:51 +08:00 committed by mergify[bot]
parent 70911f1f4a
commit 08a475df10
2 changed files with 6 additions and 21 deletions
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24
UefiCpuPkg/Library/MpInitLib/Microcode.c
View File

@ -1,7 +1,7 @@
/** @file
Implementation of loading microcode on processors.
Copyright (c) 2015 - 2019, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -397,16 +397,7 @@ LoadMicrocodePatchWorker (
Patches[Index].Size
);
//
// Zero-fill the padding area
// Please note that AlignedSize will be no less than Size
//
ZeroMem (
Walker + Patches[Index].Size,
Patches[Index].AlignedSize - Patches[Index].Size
);
Walker += Patches[Index].AlignedSize;
Walker += Patches[Index].Size;
}
//
@ -578,14 +569,9 @@ LoadMicrocodePatch (
//
// Store the information of this microcode patch
//
if (TotalSize > ALIGN_VALUE (TotalSize, SIZE_1KB) ||
ALIGN_VALUE (TotalSize, SIZE_1KB) > MAX_UINTN - TotalLoadSize) {
goto OnExit;
}
PatchInfoBuffer[PatchCount - 1].Address = (UINTN) MicrocodeEntryPoint;
PatchInfoBuffer[PatchCount - 1].Size = TotalSize;
PatchInfoBuffer[PatchCount - 1].AlignedSize = ALIGN_VALUE (TotalSize, SIZE_1KB);
TotalLoadSize += PatchInfoBuffer[PatchCount - 1].AlignedSize;
PatchInfoBuffer[PatchCount - 1].Address = (UINTN) MicrocodeEntryPoint;
PatchInfoBuffer[PatchCount - 1].Size = TotalSize;
TotalLoadSize += TotalSize;
}
//

3
UefiCpuPkg/Library/MpInitLib/MpLib.h
View File

@ -1,7 +1,7 @@
/** @file
Common header file for MP Initialize Library.
Copyright (c) 2016 - 2019, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -54,7 +54,6 @@
typedef struct {
UINTN Address;
UINTN Size;
UINTN AlignedSize;
} MICROCODE_PATCH_INFO;
//