Patch #1 follows Mike's suggestion to use XADD to avoid lock acquire/release.
Patch #2 follows Laszlo's suggestion to add global NASM macros for NASM struc usage.
Patch #3 simply remves all hardcode offset in NASM without changing any logic.
Patch #4 removes the dead code.

The final code is the same as that of V2.

Ray Ni (4):
UefiCpuPkg/MpInitLib: Use XADD to avoid lock acquire/release
MdePkg/Nasm.inc: add macros for C types used in structure definition
UefiCpuPkg/MpInitLib: Use NASM struc to avoid hardcode offset
UefiCpuPkg/MpInitLib: Remove unused Lock from MP_CPU_EXCHANGE_INFO

MdePkg/Include/Ia32/Nasm.inc | 38 ++++++
MdePkg/Include/X64/Nasm.inc | 38 ++++++
UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf | 5 +-
UefiCpuPkg/Library/MpInitLib/Ia32/MpEqu.inc | 43 -------
.../Library/MpInitLib/Ia32/MpFuncs.nasm | 98 +++++++---------
UefiCpuPkg/Library/MpInitLib/MpEqu.inc | 99 ++++++++++++++++
UefiCpuPkg/Library/MpInitLib/MpLib.c | 1 -
UefiCpuPkg/Library/MpInitLib/MpLib.h | 3 +-
UefiCpuPkg/Library/MpInitLib/PeiMpInitLib.inf | 5 +-
UefiCpuPkg/Library/MpInitLib/X64/MpEqu.inc | 45 --------
UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm | 108 ++++++++----------
11 files changed, 272 insertions(+), 211 deletions(-)
delete mode 100644 UefiCpuPkg/Library/MpInitLib/Ia32/MpEqu.inc
create mode 100644 UefiCpuPkg/Library/MpInitLib/MpEqu.inc
delete mode 100644 UefiCpuPkg/Library/MpInitLib/X64/MpEqu.inc

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2.27.0.windows.1