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| author | YuanhaoXie <yuanhao.xie@intel.com> | 2023-07-26 11:55:41 +0800 |
|---|---|---|
| committer | Ray Ni <ray.ni@intel.com> | 2023-07-27 17:10:13 +0530 |
| commit | c7a7f09c1dfa8896ccf94be2d8c7c8b420257fec (patch) | |
| tree | 29a522e1ab3c69f83f5f66484f2549e2a4b63e4a /UefiCpuPkg | |
| parent | 25a6745fe886e88fe175a50dcab4562c65b7cea3 (diff) | |
| download | edk2-c7a7f09c1dfa8896ccf94be2d8c7c8b420257fec.tar.gz edk2-c7a7f09c1dfa8896ccf94be2d8c7c8b420257fec.tar.bz2 edk2-c7a7f09c1dfa8896ccf94be2d8c7c8b420257fec.zip | |
UefiCpuPkg: Decouple the SEV-ES functionality.
The purpose is to fix an issue where an exception occurs at the start
of the DXE phase by applying the following patch series on INTEL-based
systems.
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.
This series of patches makes changes to the way the APs are
initialized and woken up. It removes the 2nd time INIT-SIPI-SIPI and
introduces a special startup signal to wake up APs. These patches also
create a new HOB identified by the mMpHandOffGuid, which stores only the
minimum information required from the PEI phase to the DXE phase.
As a result, the original HOB (mCpuInitMpLibHobGuid) is now used only
as a global variable in the PEI phase and is no longer necessary in the
DXE phase for INTEL-based systems. The AMD SEV-ES related code
still relies on the OldCpuMpData in the DXE phase.
This patch decouple the SEV-ES functionality of assigning CpuMpData to
OldCpuMpData->NewCpuMpData from the Intel logic.
Cc: Eric Dong <eric.dong@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Signed-off-by: Yuanhao Xie <yuanhao.xie@intel.com>
Diffstat (limited to 'UefiCpuPkg')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/MpLib.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c index 737e03ffc5..e7054adbcc 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -2160,7 +2160,10 @@ MpInitLibInitialize ( // APs have been wakeup before, just get the CPU Information
// from HOB
//
- AmdSevUpdateCpuMpData (CpuMpData);
+ if (CpuMpData->UseSevEsAPMethod) {
+ AmdSevUpdateCpuMpData (CpuMpData);
+ }
+
CpuMpData->CpuCount = MpHandOff->CpuCount;
CpuMpData->BspNumber = GetBspNumber (MpHandOff);
CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;
|