Currently, DxeMpLib only places APs into specified c-state in Exit Boot Service callback function for UEFI OS boot. We need to put APs into specified c-state for legacy OS boot also.
https://bugzilla.tianocore.org/show_bug.cgi?id=210 Cc: Laszlo Ersek <ler...@redhat.com> Cc: Paolo Bonzini <pbonz...@redhat.com> Cc: Feng Tian <feng.t...@intel.com> Cc: Jiewen Yao <jiewen....@intel.com> Cc: Michael D Kinney <michael.d.kin...@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan <jeff....@intel.com> --- UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf | 1 + UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 12 ++++++++++++ 2 files changed, 13 insertions(+) diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf index 03a8994..972c9ad 100644 --- a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf @@ -58,6 +58,7 @@ [Guids] gEfiEventExitBootServicesGuid ## CONSUMES ## Event + gEfiEventLegacyBootGuid ## CONSUMES ## Event [Pcd] gUefiCpuPkgTokenSpaceGuid.PcdCpuMaxLogicalProcessorNumber ## CONSUMES diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c index 7ba4b80..793d947 100644 --- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c @@ -22,6 +22,7 @@ CPU_MP_DATA *mCpuMpData = NULL; EFI_EVENT mCheckAllApsEvent = NULL; EFI_EVENT mMpInitExitBootServicesEvent = NULL; +EFI_EVENT mLegacyBootEvent = NULL; volatile BOOLEAN mStopCheckAllApsStatus = TRUE; VOID *mReservedApLoopFunc = NULL; @@ -340,6 +341,7 @@ InitMpGlobalData ( AP_CHECK_INTERVAL ); ASSERT_EFI_ERROR (Status); + Status = gBS->CreateEvent ( EVT_SIGNAL_EXIT_BOOT_SERVICES, TPL_CALLBACK, @@ -348,6 +350,16 @@ InitMpGlobalData ( &mMpInitExitBootServicesEvent ); ASSERT_EFI_ERROR (Status); + + Status = gBS->CreateEventEx ( + EVT_NOTIFY_SIGNAL, + TPL_CALLBACK, + MpInitChangeApLoopCallback, + NULL, + &gEfiEventLegacyBootGuid, + &mLegacyBootEvent + ); + ASSERT_EFI_ERROR (Status); } /** -- 2.9.3.windows.2 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
