Reviewed-by: Ray Ni <ray...@intel.com> -----Original Message----- From: Li, Zhihao <zhihao...@intel.com> Sent: Tuesday, March 1, 2022 7:22 PM To: devel@edk2.groups.io Cc: Dong, Eric <eric.d...@intel.com>; Ni, Ray <ray...@intel.com>; Kumar, Rahul1 <rahul1.ku...@intel.com>; Fu, Siyuan <siyuan...@intel.com> Subject: [PATCH v5 1/1] UefiCpuPkg: Extend SMM CPU Service with rendezvous support.
REF： https://bugzilla.tianocore.org/show_bug.cgi?id=3815 This patch define a new Protocol with the new services SmmWaitForAllProcessor(), which can be used by SMI handler to optionally wait for other APs to complete SMM rendezvous in relaxed AP mode. A new library SmmCpuRendezvousLib is provided to abstract the service into library API to simple SMI handler code. Cc: Eric Dong <eric.d...@intel.com> Cc: Ray Ni <ray...@intel.com> Cc: Rahul Kumar <rahul1.ku...@intel.com> Cc: Siyuan Fu <siyuan...@intel.com> Cc: Zhihao Li <zhihao...@intel.com> Signed-off-by: Zhihao Li <zhihao...@intel.com> --- UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.c | 103 ++++++++++++++++++++ UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c | 69 ++++++++++++- UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 20 +++- UefiCpuPkg/Include/Library/SmmCpuRendezvousLib.h | 27 +++++ UefiCpuPkg/Include/Protocol/SmmCpuService.h | 36 ++++++- UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.inf | 35 +++++++ UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 29 +++++- UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf | 5 +- UefiCpuPkg/UefiCpuPkg.dec | 8 +- UefiCpuPkg/UefiCpuPkg.dsc | 2 + 10 files changed, 322 insertions(+), 12 deletions(-) diff --git a/UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.c b/UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.c new file mode 100644 index 000000000000..e573c2ecfb51 --- /dev/null +++ b/UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.c @@ -0,0 +1,103 @@ +/** @file + SMM CPU Rendezvous sevice implement. + + Copyright (c) 2022, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include <Base.h> +#include <Uefi.h> +#include <Library/BaseLib.h> +#include <Library/DebugLib.h> +#include <Library/MmServicesTableLib.h> +#include <Protocol/SmmCpuService.h> +#include <Library/SmmCpuRendezvousLib.h> + +STATIC EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL *mSmmCpuRendezvous = NULL; +STATIC VOID *mRegistration = NULL; + +/** + Callback function to wait Smm cpu rendezvous service located. + + SmmCpuRendezvousLib need to support MM_STANDALONE and DXE_SMM_DRIVER driver. + So do not use library constructor to locate the protocol. + + @param[in] Protocol Points to the protocol's unique identifier. + @param[in] Interface Points to the interface instance. + @param[in] Handle The handle on which the interface was installed. + + @retval EFI_SUCCESS Notification runs successfully. + +**/ +EFI_STATUS +EFIAPI +SmmCpuRendezvousProtocolNotify ( + IN CONST EFI_GUID *Protocol, + IN VOID *Interface, + IN EFI_HANDLE Handle + ) +{ + EFI_STATUS Status; + + Status = gMmst->MmLocateProtocol ( + &gEdkiiSmmCpuRendezvousProtocolGuid, + NULL, + (VOID **)&mSmmCpuRendezvous + ); + ASSERT_EFI_ERROR (Status); + + return EFI_SUCCESS; +} + +/** + This routine wait for all AP processors to arrive in SMM. + + @param[in] BlockingMode Blocking mode or non-blocking mode. + + @retval EFI_SUCCESS All avaiable APs arrived. + @retval EFI_TIMEOUT Wait for all APs until timeout. + @retval OTHER Fail to register SMM CPU Rendezvous service Protocol. +**/ +EFI_STATUS +EFIAPI +SmmWaitForAllProcessor ( + IN BOOLEAN BlockingMode + ) +{ + EFI_STATUS Status; + + if ((mRegistration == NULL) && (mSmmCpuRendezvous == NULL)) { + // + // Locate SMM cpu rendezvous protocol for the first time execute the function. + // + Status = gMmst->MmLocateProtocol ( + &gEdkiiSmmCpuRendezvousProtocolGuid, + NULL, + (VOID **)&mSmmCpuRendezvous + ); + if (EFI_ERROR (Status)) { + Status = gMmst->MmRegisterProtocolNotify ( + &gEdkiiSmmCpuRendezvousProtocolGuid, + SmmCpuRendezvousProtocolNotify, + &mRegistration + ); + if (EFI_ERROR (Status)) { + return Status; + } + } + } + + // + // The platform have not set up. It doesn't need smm cpu rendezvous. + // + if (mSmmCpuRendezvous == NULL) { + return EFI_SUCCESS; + } + + Status = mSmmCpuRendezvous->WaitForAllProcessor ( + mSmmCpuRendezvous, + BlockingMode + ); + return Status; +} diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c index 5d624f8e9ed6..2ebf4543c3ed 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/CpuService.c @@ -1,7 +1,7 @@ /** @file Implementation of SMM CPU Services Protocol. -Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR> +Copyright (c) 2011 - 2022, Intel Corporation. All rights reserved.<BR> SPDX-License-Identifier: BSD-2-Clause-Patent **/ @@ -20,6 +20,13 @@ EFI_SMM_CPU_SERVICE_PROTOCOL mSmmCpuService = { SmmRegisterExceptionHandler }; +// +// EDKII SMM CPU Rendezvous Service Protocol instance +// +EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL mSmmCpuRendezvousService = { + SmmCpuRendezvous +}; + /** Gets processor information on the requested processor at the instant this call is made. @@ -350,6 +357,7 @@ SmmRegisterExceptionHandler ( @param ImageHandle The firmware allocated handle for the EFI image. @retval EFI_SUCCESS EFI SMM CPU Services Protocol was installed successfully. + @retval OTHER Fail to install Protocol. **/ EFI_STATUS InitializeSmmCpuServices ( @@ -365,5 +373,64 @@ InitializeSmmCpuServices ( &mSmmCpuService ); ASSERT_EFI_ERROR (Status); + if (EFI_ERROR (Status)) { + return Status; + } + + Status = gSmst->SmmInstallProtocolInterface ( + &Handle, + &gEdkiiSmmCpuRendezvousProtocolGuid, + EFI_NATIVE_INTERFACE, + &mSmmCpuRendezvousService + ); + ASSERT_EFI_ERROR (Status); + return Status; +} + +/** + Wait for all processors enterring SMM until all CPUs are already synchronized or not. + + If BlockingMode is False, timeout value is zero. + + @param This A pointer to the EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL instance. + @param BlockingMode Blocking mode or non-blocking mode. + + @retval EFI_SUCCESS All avaiable APs arrived. + @retval EFI_TIMEOUT Wait for all APs until timeout. + +**/ +EFI_STATUS +EFIAPI +SmmCpuRendezvous ( + IN EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL *This, + IN BOOLEAN BlockingMode + ) +{ + EFI_STATUS Status; + + // + // Return success immediately if all CPUs are already synchronized. + // + if (mSmmMpSyncData->AllApArrivedWithException) { + Status = EFI_SUCCESS; + goto ON_EXIT; + } + + if (!BlockingMode) { + Status = EFI_TIMEOUT; + goto ON_EXIT; + } + + // + // There are some APs outside SMM, Wait for all avaiable APs to arrive. + // + SmmWaitForApArrival (); + Status = mSmmMpSyncData->AllApArrivedWithException ? EFI_SUCCESS : EFI_TIMEOUT; + +ON_EXIT: + if (!mSmmMpSyncData->AllApArrivedWithException) { + DEBUG ((DEBUG_INFO, "EdkiiSmmWaitForAllApArrival: Timeout to wait all APs arrival\n")); + } + return Status; } diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c index 882dee4fe246..13c2cb8da4c3 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c @@ -1,7 +1,7 @@ /** @file SMM MP service implementation -Copyright (c) 2009 - 2021, Intel Corporation. All rights reserved.<BR> +Copyright (c) 2009 - 2022, Intel Corporation. All rights reserved.<BR> Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> SPDX-License-Identifier: BSD-2-Clause-Patent @@ -293,10 +293,14 @@ SmmWaitForApArrival ( // Sync with APs 1st timeout // for (Timer = StartSyncTimer (); - !IsSyncTimerTimeout (Timer) && !(LmceEn && LmceSignal) && - !AllCpusInSmmWithExceptions (ARRIVAL_EXCEPTION_BLOCKED | ARRIVAL_EXCEPTION_SMI_DISABLED); + !IsSyncTimerTimeout (Timer) && !(LmceEn && LmceSignal); ) { + mSmmMpSyncData->AllApArrivedWithException = AllCpusInSmmWithExceptions (ARRIVAL_EXCEPTION_BLOCKED | ARRIVAL_EXCEPTION_SMI_DISABLED); + if (mSmmMpSyncData->AllApArrivedWithException) { + break; + } + CpuPause (); } @@ -330,10 +334,14 @@ SmmWaitForApArrival ( // Sync with APs 2nd timeout. // for (Timer = StartSyncTimer (); - !IsSyncTimerTimeout (Timer) && - !AllCpusInSmmWithExceptions (ARRIVAL_EXCEPTION_BLOCKED | ARRIVAL_EXCEPTION_SMI_DISABLED); + !IsSyncTimerTimeout (Timer); ) { + mSmmMpSyncData->AllApArrivedWithException = AllCpusInSmmWithExceptions (ARRIVAL_EXCEPTION_BLOCKED | ARRIVAL_EXCEPTION_SMI_DISABLED); + if (mSmmMpSyncData->AllApArrivedWithException) { + break; + } + CpuPause (); } } @@ -1887,6 +1895,8 @@ InitializeMpSyncData ( *mSmmMpSyncData->InsideSmm = FALSE; *mSmmMpSyncData->AllCpusInSync = FALSE; + mSmmMpSyncData->AllApArrivedWithException = FALSE; + for (CpuIndex = 0; CpuIndex < gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus; CpuIndex++) { mSmmMpSyncData->CpuData[CpuIndex].Busy = (SPIN_LOCK *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Busy + mSemaphoreSize * CpuIndex); diff --git a/UefiCpuPkg/Include/Library/SmmCpuRendezvousLib.h b/UefiCpuPkg/Include/Library/SmmCpuRendezvousLib.h new file mode 100644 index 000000000000..82e459e9106e --- /dev/null +++ b/UefiCpuPkg/Include/Library/SmmCpuRendezvousLib.h @@ -0,0 +1,27 @@ +/** @file + SMM CPU Rendezvous library header file. + + Copyright (c) 2022, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef SMM_CPU_RENDEZVOUS_H_ +#define SMM_CPU_RENDEZVOUS_H_ + +/** + This routine wait for all AP processors to arrive in SMM. + + @param[in] BlockingMode Blocking mode or non-blocking mode. + + @retval EFI_SUCCESS All processors checked in to SMM. + @retval EFI_TIMEOUT Wait for all APs until timeout. + +**/ +EFI_STATUS +EFIAPI +SmmWaitForAllProcessor ( + IN BOOLEAN BlockingMode + ); + +#endif diff --git a/UefiCpuPkg/Include/Protocol/SmmCpuService.h b/UefiCpuPkg/Include/Protocol/SmmCpuService.h index 952767afce75..3d93d243409c 100644 --- a/UefiCpuPkg/Include/Protocol/SmmCpuService.h +++ b/UefiCpuPkg/Include/Protocol/SmmCpuService.h @@ -1,7 +1,7 @@ /** @file SMM CPU Service protocol definition. -Copyright (c) 2013 - 2015, Intel Corporation. All rights reserved.<BR> +Copyright (c) 2013 - 2022, Intel Corporation. All rights reserved.<BR> SPDX-License-Identifier: BSD-2-Clause-Patent **/ @@ -200,4 +200,38 @@ struct _EFI_SMM_CPU_SERVICE_PROTOCOL { extern EFI_GUID gEfiSmmCpuServiceProtocolGuid; +// +// EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL provide SMM CPU +// rendezvous service support. +// +#define EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL_GUID \ + { \ + 0xaa00d50b, 0x4911, 0x428f, { 0xb9, 0x1a, 0xa5, 0x9d, 0xdb, 0x13, 0xe2, 0x4c } \ + } + +typedef struct _EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL; + +/** + Wait for all APs to arrive SMM mode in given timeout constraint. + + @param[in] This A pointer to the EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL instance. + @param[in] BlockingMode Block or non-block mode. + + @retval EFI_SUCCESS All APs have arrived SMM mode except SMI disabled APs. + @retval EFI_TIMEOUT There are APs not in SMM mode in given timeout constraint. + +**/ +typedef +EFI_STATUS +(EFIAPI *EDKII_WAIT_FOR_ALL_PROCESSOR)( + IN EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL *This, + IN BOOLEAN BlockingMode + ); + +struct _EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL { + EDKII_WAIT_FOR_ALL_PROCESSOR WaitForAllProcessor; +}; + +extern EFI_GUID gEdkiiSmmCpuRendezvousProtocolGuid; + #endif diff --git a/UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.inf b/UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.inf new file mode 100644 index 000000000000..52374bf6e9b4 --- /dev/null +++ b/UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.inf @@ -0,0 +1,35 @@ +## @file +# SMM CPU Rendezvous service lib. +# +# This is SMM CPU rendezvous service lib that wait for all +# APs to enter SMM mode. +# +# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR> +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = SmmCpuRendezvousLib + FILE_GUID = 1509Bb36-9Ba4-438B-B195-Ac5914Db14E2 + MODULE_TYPE = DXE_SMM_DRIVER + LIBRARY_CLASS = SmmCpuRendezvousLib|MM_STANDALONE DXE_SMM_DRIVER + +[Sources] + SmmCpuRendezvousLib.c + +[Packages] + MdePkg/MdePkg.dec + UefiCpuPkg/UefiCpuPkg.dec + +[LibraryClasses] + BaseLib + DebugLib + MmServicesTableLib + +[Pcd] + gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmApSyncTimeout ## CONSUMES + +[Protocols] + gEdkiiSmmCpuRendezvousProtocolGuid diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h index 26d07c5b5ea0..aed872836c99 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h @@ -1,7 +1,7 @@ /** @file Agent Module to load other modules to deploy SMM Entry Vector for X86 CPU. -Copyright (c) 2009 - 2020, Intel Corporation. All rights reserved.<BR> +Copyright (c) 2009 - 2022, Intel Corporation. All rights reserved.<BR> Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> SPDX-License-Identifier: BSD-2-Clause-Patent @@ -428,6 +428,7 @@ typedef struct { volatile SMM_CPU_SYNC_MODE EffectiveSyncMode; volatile BOOLEAN SwitchBsp; volatile BOOLEAN *CandidateBsp; + volatile BOOLEAN AllApArrivedWithException; EFI_AP_PROCEDURE StartupProcedure; VOID *StartupProcArgs; } SMM_DISPATCHER_MP_SYNC_DATA; @@ -1488,4 +1489,30 @@ IsRestrictedMemoryAccess ( VOID ); +/** + Choose blocking or non-blocking mode to Wait for all APs. + + @param[in] This A pointer to the EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL instance. + @param[in] BlockingMode Blocking or non-blocking mode. + + @retval EFI_SUCCESS All APs have arrived SMM mode except SMI disabled APs. + @retval EFI_TIMEOUT There are APs not in SMM mode in given timeout constraint. + +**/ +EFI_STATUS +EFIAPI +SmmCpuRendezvous ( + IN EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL *This, + IN BOOLEAN BlockingMode + ); + +/** + Insure when this function returns, no AP will execute normal mode code before entering SMM, except SMI disabled APs. + +**/ +VOID +SmmWaitForApArrival ( + VOID + ); + #endif diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf index 0e88071c7079..deef00f9c6e9 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf @@ -4,7 +4,7 @@ # This SMM driver performs SMM initialization, deploy SMM Entry Vector, # provides CPU specific services in SMM. # -# Copyright (c) 2009 - 2021, Intel Corporation. All rights reserved.<BR> +# Copyright (c) 2009 - 2022, Intel Corporation. All rights reserved.<BR> # Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> # # SPDX-License-Identifier: BSD-2-Clause-Patent @@ -107,7 +107,8 @@ gEfiSmmReadyToLockProtocolGuid ## NOTIFY gEfiSmmCpuServiceProtocolGuid ## PRODUCES gEdkiiSmmMemoryAttributeProtocolGuid ## PRODUCES - gEfiMmMpProtocolGuid ## PRODUCES + gEfiMmMpProtocolGuid ## PRODUCES + gEdkiiSmmCpuRendezvousProtocolGuid ## PRODUCES [Guids] gEfiAcpiVariableGuid ## SOMETIMES_CONSUMES ## HOB # it is used for S3 boot. diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec index 7de66fde674c..525cde463435 100644 --- a/UefiCpuPkg/UefiCpuPkg.dec +++ b/UefiCpuPkg/UefiCpuPkg.dec @@ -1,7 +1,7 @@ ## @file UefiCpuPkg.dec # This Package provides UEFI compatible CPU modules and libraries. # -# Copyright (c) 2007 - 2021, Intel Corporation. All rights reserved.<BR> +# Copyright (c) 2007 - 2022, Intel Corporation. All rights reserved.<BR> # # SPDX-License-Identifier: BSD-2-Clause-Patent # @@ -62,6 +62,9 @@ ## @libraryclass Provides function for loading microcode. MicrocodeLib|Include/Library/MicrocodeLib.h + ## @libraryclass Provides function for SMM CPU Rendezvous Library. + SmmCpuRendezvousLib|Include/Library/SmmCpuRendezvousLib.h + [Guids] gUefiCpuPkgTokenSpaceGuid = { 0xac05bf33, 0x995a, 0x4ed4, { 0xaa, 0xb8, 0xef, 0x7a, 0xe8, 0xf, 0x5c, 0xb0 }} gMsegSmramGuid = { 0x5802bce4, 0xeeee, 0x4e33, { 0xa1, 0x30, 0xeb, 0xad, 0x27, 0xf0, 0xe4, 0x39 }} @@ -77,7 +80,8 @@ [Protocols] ## Include/Protocol/SmmCpuService.h - gEfiSmmCpuServiceProtocolGuid = { 0x1d202cab, 0xc8ab, 0x4d5c, { 0x94, 0xf7, 0x3c, 0xfc, 0xc0, 0xd3, 0xd3, 0x35 }} + gEfiSmmCpuServiceProtocolGuid = { 0x1d202cab, 0xc8ab, 0x4d5c, { 0x94, 0xf7, 0x3c, 0xfc, 0xc0, 0xd3, 0xd3, 0x35 }} + gEdkiiSmmCpuRendezvousProtocolGuid = { 0xaa00d50b, 0x4911, 0x428f, { 0xb9, 0x1a, 0xa5, 0x9d, 0xdb, 0x13, 0xe2, 0x4c }} ## Include/Protocol/SmMonitorInit.h gEfiSmMonitorInitProtocolGuid = { 0x228f344d, 0xb3de, 0x43bb, { 0xa4, 0xd7, 0xea, 0x20, 0xb, 0x1b, 0x14, 0x82 }} diff --git a/UefiCpuPkg/UefiCpuPkg.dsc b/UefiCpuPkg/UefiCpuPkg.dsc index d1d61dd6a03b..a0bbde9985d3 100644 --- a/UefiCpuPkg/UefiCpuPkg.dsc +++ b/UefiCpuPkg/UefiCpuPkg.dsc @@ -61,6 +61,7 @@ TpmMeasurementLib|MdeModulePkg/Library/TpmMeasurementLibNull/TpmMeasurementLibNull.inf VmgExitLib|UefiCpuPkg/Library/VmgExitLibNull/VmgExitLibNull.inf MicrocodeLib|UefiCpuPkg/Library/MicrocodeLib/MicrocodeLib.inf + SmmCpuRendezvousLib|UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.inf [LibraryClasses.common.SEC] PlatformSecLib|UefiCpuPkg/Library/PlatformSecLibNull/PlatformSecLibNull.inf @@ -173,6 +174,7 @@ } UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume2Pei.inf UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.inf + UefiCpuPkg/Library/SmmCpuRendezvousLib/SmmCpuRendezvousLib.inf [BuildOptions] *_*_*_CC_FLAGS = -D DISABLE_NEW_DEPRECATED_INTERFACES -- 2.26.2.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. 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