Gard, any comments? > -----Original Message----- > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Ni, Ray > Sent: Wednesday, July 5, 2023 10:49 AM > To: devel@edk2.groups.io; Xie, Yuanhao <yuanhao....@intel.com> > Subject: Re: [edk2-devel] [Patch V4 0/5] Eliminate the second INIT-SIPI-SIPI > sequence > > Reviewed-by: Ray Ni <ray...@intel.com> > > > -----Original Message----- > > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Yuanhao > Xie > > Sent: Wednesday, June 28, 2023 4:47 PM > > To: devel@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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