[edk2-devel] [Patch V4 0/5] Eliminate the second INIT-SIPI-SIPI sequence
Ni, Ray
ray.ni at intel.com
Wed Jul 5 07:22:06 UTC 2023
Gard, any comments?
> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Ni, Ray
> Sent: Wednesday, July 5, 2023 10:49 AM
> To: devel at edk2.groups.io; Xie, Yuanhao <yuanhao.xie at intel.com>
> Subject: Re: [edk2-devel] [Patch V4 0/5] Eliminate the second INIT-SIPI-SIPI
> sequence
>
> Reviewed-by: Ray Ni <Ray.ni at intel.com>
>
> > -----Original Message-----
> > From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Yuanhao
> Xie
> > Sent: Wednesday, June 28, 2023 4:47 PM
> > To: devel at edk2.groups.io
> > Subject: [edk2-devel] [Patch V4 0/5] Eliminate the second INIT-SIPI-SIPI
> > sequence
> >
> > To speed up MP initialization, this set of patches replaces the
> > time-consuming init-sipi-sipi process in the DXE phase. Instead,
> > a start-up signal is used to wake up the APs and switch context
> > from the PEI phase to the DXE phase. This optimization is
> > effective when both PEI and DXE operate in the same bit mode.
> > The current HOB characterized by mCpuInitMpLibHobGuid has
> > two purposes:
> > Acting as a global variable for the PEI phase.
> > Transferring information from the PEI phase to the DXE phase.
> > This series of patches creates a new HOB specifically designed
> > to transfer only the minimal necessary information
> > (MpHandoff structure) from the PEI phase to the DXE phase.
> >
> > YuanhaoXie (5):
> > UefiCpuPkg: Refactor the logic for placing APs in HltLoop.
> > UefiCpuPkg: Refactor the logic for placing APs in Mwait/Runloop.
> > UefiCpuPkg: Create MpHandOff.
> > UefiCpuPkg: ApWakeupFunction directly use CpuMpData.
> > UefiCpuPkg: Eliminate the second INIT-SIPI-SIPI sequence.
> >
> > UefiCpuPkg/Library/MpInitLib/AmdSev.c | 17 +++++++++++++++++
> > UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf | 1 +
> > UefiCpuPkg/Library/MpInitLib/Ia32/MpFuncs.nasm | 4 ++--
> > UefiCpuPkg/Library/MpInitLib/MpHandOff.h | 47
> > +++++++++++++++++++++++++++++++++++++++++++++++
> > UefiCpuPkg/Library/MpInitLib/MpLib.c | 345
> >
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> > ++++++++++++++++++++-----------------------------------------------------------------
> > UefiCpuPkg/Library/MpInitLib/MpLib.h | 28
> > ++++++++++++++++++++++++++++
> > UefiCpuPkg/Library/MpInitLib/PeiMpInitLib.inf | 2 +-
> > UefiCpuPkg/Library/MpInitLib/PeiMpLib.c | 32
> > +++++++++++++++++++++++++++++++-
> > UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm | 3 +--
> > 9 files changed, 408 insertions(+), 71 deletions(-)
> > create mode 100644 UefiCpuPkg/Library/MpInitLib/MpHandOff.h
> >
> > --
> > 2.36.1.windows.1
> >
> >
> >
> >
> >
>
>
>
>
>
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