Re: [edk2-devel] [PATCH v2 0/3] Use XADD to avoid lock acquire/release

["Michael D Kinney" <michael.d.kinney@intel.com>]

Hi Ray,

I really like the cleanup to remove hard coded offsets, but I think that change should be its own patch series.

Can we make the functional change to use XADD as its own patch series before the change to remove hard coded offsets and use struct?

Then have a 2nd patch series that is a non-functional change to remove hard coded offsets and use struct and remove the unused Lock field?

Thanks,

Mike

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Ni, Ray
> Sent: Thursday, February 4, 2021 11:58 PM
> To: devel@edk2.groups.io
> Subject: [edk2-devel] [PATCH v2 0/3] Use XADD to avoid lock acquire/release
> 
> Patch #1 follows Laszlo's suggestion to add global NASM macros
> 
>   for NASM struc usage.
> 
> Patch #2 changes all hardcode offset to use struc.
> 
> Patch #3 doesn't have any change comparing to V1 except
> 
>   1). dword/qword prefix is added.
> 
>   2). the comments "program AP stack" is removed.
> 
> Ray Ni (3):
>   MdePkg/Nasm.inc: add macros for C types used in structure definition
>   UefiCpuPkg/MpInitLib: Use NASM struc to avoid hardcode offset
>   UefiCpuPkg/MpInitLib: Use XADD to avoid lock acquire/release
> 
>  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
> 
> --
> 2.27.0.windows.1
> 
> 
> 
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