microsoft · apop5 · Feb 23, 2026 · Feb 13, 2026 · Feb 13, 2026 · Feb 13, 2026
diff --git a/.pytool/CISettings.py b/.pytool/CISettings.py
@@ -68,7 +68,6 @@ def GetArchitecturesSupported(self):
         ''' return iterable of edk2 architectures supported by this build '''
         return ("IA32",
                 "X64",
-                "ARM",
                 "AARCH64")
 
     def GetTargetsSupported(self):
@@ -131,7 +130,7 @@ def SetTargets(self, list_of_requested_target):
     def GetActiveScopes(self):
         ''' return tuple containing scopes that should be active for this process '''
         if self.ActualScopes is None:
-            scopes = ("cibuild", "edk2-build", "host-based-test", "rust-ci")
+            scopes = ("cibuild", "edk2-build", "host-based-test")
 
             self.ActualToolChainTag = shell_environment.GetBuildVars().GetValue("TOOL_CHAIN_TAG", "")
 
@@ -194,12 +193,12 @@ def GetDependencies(self):
             {
                 "Path": "MU_BASECORE",
                 "Url": "https://github.com/microsoft/mu_basecore.git",
-                "Branch": "release/202511"
-                ""
+                "Branch": "release/202511",
+                "Recurse": {"CIFile": ".pytool/CISettings.py"}
             },
             {
-                "Path": "Silicon/Intel/MU_TIANO",
-                "Url": "https://github.com/Microsoft/mu_silicon_intel_tiano.git",
+                "Path": "Silicon/MIN_PLAT",
+                "Url": "https://github.com/microsoft/mu_common_intel_min_platform.git",
                 "Branch": "release/202511"
             }
         ]

diff --git a/...ePkg/Library/MemoryProtectionExceptionHandlerLib/MemoryProtectionExceptionHandlerLibX64.c b/...ePkg/Library/MemoryProtectionExceptionHandlerLib/MemoryProtectionExceptionHandlerLibX64.c
@@ -13,7 +13,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include <Pi/PiStatusCode.h>
 
 #include <Protocol/DebugSupport.h>
-#include <Protocol/MemoryProtectionNonstopMode.h>
 
 #include <Library/CpuExceptionHandlerLib.h>
 #include <Library/DebugLib.h>
@@ -64,10 +63,8 @@ MemoryProtectionExceptionHandler (
   IN EFI_SYSTEM_CONTEXT  SystemContext
   )
 {
-  UINTN                                    pointer;
-  MEMORY_PROTECTION_NONSTOP_MODE_PROTOCOL  *NonstopModeProtocol;
-  BOOLEAN                                  IgnoreNext = FALSE;
-  EFI_STATUS                               Status;
+  UINTN    pointer;
+  BOOLEAN  IgnoreNext = FALSE;
 
   if (!EFI_ERROR (ExPersistGetIgnoreNextPageFault (&IgnoreNext)) &&
       IgnoreNext &&

diff --git a/MsCorePkg/Library/MuArmGicExLib/GicV3/AArch64/ArmGicV3.S b/MsCorePkg/Library/MuArmGicExLib/GicV3/AArch64/ArmGicV3.S
@@ -32,27 +32,25 @@
 //  VOID
 //  );
 ASM_FUNC(ArmGicV3GetControlSystemRegisterEnable)
-        EL1_OR_EL2_OR_EL3(x1)
+        EL1_OR_EL2(x1)
 1:  mrs x0, ICC_SRE_EL1
-        b       4f
+        b       3f
 2:  mrs x0, ICC_SRE_EL2
-        b       4f
-3:  mrs x0, ICC_SRE_EL3
-4:  ret
+        b       3f
+3:  ret
 
 //VOID
 //EFIAPI
 //ArmGicV3SetControlSystemRegisterEnable (
 //  IN UINT32         ControlSystemRegisterEnable
 //  );
 ASM_FUNC(ArmGicV3SetControlSystemRegisterEnable)
-        EL1_OR_EL2_OR_EL3(x1)
+        EL1_OR_EL2(x1)
 1:  msr ICC_SRE_EL1, x0
-        b       4f
+        b       3f
 2:  msr ICC_SRE_EL2, x0
-        b       4f
-3:  msr ICC_SRE_EL3, x0
-4:  isb
+        b       3f
+3:  isb
         ret
 
 //VOID

diff --git a/MsCorePkg/Library/MuArmGicExLib/GicV3/AArch64/ArmGicV3.masm b/MsCorePkg/Library/MuArmGicExLib/GicV3/AArch64/ArmGicV3.masm
@@ -30,16 +30,14 @@
 //  VOID
 //  );
 ArmGicV3GetControlSystemRegisterEnable PROC
-        EL1_OR_EL2_OR_EL3(x1)
+        EL1_OR_EL2(x1)
 1
     mrs x0, ICC_SRE_EL1
-        b       %f4
+        b       %f3
 2
     mrs x0, ICC_SRE_EL2
-        b       %f4
+        b       %f3
 3
-    mrs x0, ICC_SRE_EL3
-4
     ret
 ArmGicV3GetControlSystemRegisterEnable ENDP
 
@@ -49,16 +47,14 @@ ArmGicV3GetControlSystemRegisterEnable ENDP
 //  IN UINT32         ControlSystemRegisterEnable
 //  );
 ArmGicV3SetControlSystemRegisterEnable PROC
-        EL1_OR_EL2_OR_EL3(x1)
+        EL1_OR_EL2(x1)
 1
     msr ICC_SRE_EL1, x0
-        b       %f4
+        b       %f3
 2
     msr ICC_SRE_EL2, x0
-        b       %f4
+        b       %f3
 3
-    msr ICC_SRE_EL3, x0
-4
     isb sy
         ret
 ArmGicV3SetControlSystemRegisterEnable ENDP

diff --git a/Readme.rst b/Readme.rst
@@ -11,46 +11,34 @@ Ubuntu_GCC5_                  |UbuntuCiBuild|   |UbuntuCiTest|  |UbuntuCiCoverag
 
 This repository is part of Project Mu.  Please see Project Mu for details https://microsoft.github.io/mu.
 
-Branch Status - release/202502
+Branch Status - release/202511
 ==============================
 
 :Status:
   In Development
 
 :Entered Development:
-  2025/02/21 (Date Edk2 started accepting changes which were not in a previous release)
+  2026/11/22 (Date Edk2 started accepting changes which were not in a previous release)
 
 :Anticipated Stabilization:
-  May 2025
+  May 2026
 
-Branch Changes - release/202502
+Branch Changes - release/202511
 ===============================
 
 Breaking Changes-dev
 --------------------
 
 Main Changes-dev
 ----------------
-- AdvLoggerPkg: AdvLoggerPrmConfigLibGoogleTest buffer overun fixed. Discovered from UnitTestFrameworkPkgHost.dsc.inf enabling address sanitization.
-- AdvLoggerPkg: AdvLoggerPrmConfigLibGoogleTest buffer overun fixed. Discovered from UnitTestFrameworkPkgHost.dsc.inf enabling address sanitization.
-- HidPkg: HidPkg.dsc no longer includes StackCheckLib as a NULL library due to upstreaming stack check to Edk2.
-- MfciPkg: MfciPkg.dsc no longer includes StackCheckLib as a NULL library due to upstreaming stack check to Edk2.
-- MfciPkg: MfciPkg.dsc no longer includes VsIntrinsicLib as it has been removed in basecore.
-- MfciPkg: Fixed MfciTargetingHostTest and MfciVerifyPolicyAndChangeHostTest copy length errors discovered by UnitTestFrameworkPkgHost.dsc.inf enabling address sanitization.
-- MsApplicationPkg: MsApplicationPkg.dsc no longer includes StackCheckLib as a NULL library due to upstreaming stack check to Edk2.
-- MsCorePkg: MsCorePkg.dsc no longer includes StackCheckLib as a NULL library due to upstreaming stack check to Edk2.
-- MsCorePkg: MsCorePkg.dsc no longer includes no longer includes VsIntrinsicLib as it has been removed in basecore.
-- MsGraphicsPkg: MsGraphicsPkg.dsc no longer includes StackCheckLib as a NULL library due to upstreaming stack check to Edk2.
-- MsWheaPkg: MsWheaPkg.dsc no longer includes StackCheckLib as a NULL library due to upstreaming stack check to Edk2.
-- PcBdsPkg: PcBdsPkg.dsc no longer includes StackCheckLib as a NULL library due to upstreaming stack check to Edk2.
-- TpmTestingPkg: Tcg2Dxe has been updated to match latest mu_tiano_plus changes. 
-- TpmTestingPkg: TpmTestingPkg.dsc no longer includes StackCheckLib as a NULL library due to upstreaming stack check to Edk2. Uses MdeLibs.dsc.inc.
-- UefiTestingPkg: UefiTestingPkg.dsc no longer includes VsInstrinsicLib or StackCheckLib.
 
+- gEfiEventPostReadyToBootGuid was replaced with EDK2's gEfiEventAfterReadyToBootGuid
+- gMemoryProtectionNonstopModeProtocolGuid has been depreciated and associated code removed. 
+- The changes in basecore which allowed removing STATIC defines were dropped. Associated unit tests which relied on this capability were dropped. 
 
 Platform Integration Reference
 ------------------------------
-Reference platforms which consume release/202405 are available in [mu_tiano_platforms](https://github.com/microsoft/mu_tiano_platforms).
+Reference platforms which consume release/202511 are available in [mu_tiano_platforms](https://github.com/microsoft/mu_tiano_platforms).
 
 Code of Conduct
 ===============
@@ -79,12 +67,12 @@ Copyright & License
 
 .. CoreCI
 
-.. _Windows_VS2022: https://dev.azure.com/projectmu/mu/_build/latest?definitionId=49&&branchName=release%2F202405
-.. |WindowsCiBuild| image:: https://dev.azure.com/projectmu/mu/_apis/build/status/CI/Mu%20Plus%20CI%20VS2022?branchName=release%2F202405
+.. _Windows_VS2022: https://dev.azure.com/projectmu/mu/_build/latest?definitionId=49&&branchName=release%2F202511
+.. |WindowsCiBuild| image:: https://dev.azure.com/projectmu/mu/_apis/build/status/CI/Mu%20Plus%20CI%20VS2022?branchName=release%2F202511
 .. |WindowsCiTest| image:: https://img.shields.io/azure-devops/tests/projectmu/mu/49.svg
 .. |WindowsCiCoverage| image:: https://img.shields.io/badge/coverage-coming_soon-blue
 
-.. _Ubuntu_GCC5: https://dev.azure.com/projectmu/mu/_build/latest?definitionId=50&&branchName=release%2F202405
-.. |UbuntuCiBuild| image:: https://dev.azure.com/projectmu/mu/_apis/build/status/CI/Mu%20Plus%20CI%20Ubuntu%20GCC5?branchName=release%2F202405
+.. _Ubuntu_GCC5: https://dev.azure.com/projectmu/mu/_build/latest?definitionId=50&&branchName=release%2F202511
+.. |UbuntuCiBuild| image:: https://dev.azure.com/projectmu/mu/_apis/build/status/CI/Mu%20Plus%20CI%20Ubuntu%20GCC5?branchName=release%2F202511
 .. |UbuntuCiTest| image:: https://img.shields.io/azure-devops/tests/projectmu/mu/50.svg
 .. |UbuntuCiCoverage| image:: https://img.shields.io/badge/coverage-coming_soon-blue
diff --git a/UefiTestingPkg/FunctionalSystemTests/MemoryProtectionTest/App/DxeMemoryProtectionTestApp.c b/UefiTestingPkg/FunctionalSystemTests/MemoryProtectionTest/App/DxeMemoryProtectionTestApp.c
@@ -222,25 +222,6 @@ CheckMemoryProtectionExceptionHandlerInstallation (
   return gBS->LocateProtocol (&gMemoryProtectionExceptionHandlerGuid, NULL, (VOID **)&DummyProtocol);
 }
 
-/**
-  This helper function returns TRUE if the MemProtExGetIgnoreNextException() returns TRUE.
-
-  @retval     TRUE                IgnoreNextException set
-  @retval     FALSE               Otherwise
-**/
-STATIC
-BOOLEAN
-GetIgnoreNextEx (
-  VOID
-  )
-{
-  BOOLEAN  Result = FALSE;
-
-  ExPersistGetIgnoreNextPageFault (&Result);
-
-  return Result;
-}
-
 /**
   The recursion loop for testing stack overflow protection. This function will
   recurse until it overflows the stack at which point it's expected that a switch
@@ -270,31 +251,6 @@ Recursion (
   return Sum + Count;
 }
 
-/**
-  A recursive stack overflow function which at every recursion level checks if the interrupt handler
-  has signaled that it ran and cleared the faulting region at which point we unwind the recursion.
-
-  @param[in]  Count   The current recursion depth.
-
-  @retval             The sum of Count and the return value of the next recursive call.
-**/
-STATIC
-UINT64
-RecursionDynamic (
-  IN UINT64  Count
-  )
-{
-  UINT64  Sum = 0;
-
-  DEBUG ((DEBUG_ERROR, "%a - 0x%x\n", __FUNCTION__, Count));
-
-  if (GetIgnoreNextEx ()) {
-    Sum = RecursionDynamic (++Count);
-  }
-
-  return Sum + Count;
-}
-
 /**
   Tests the pool guards by allocating a pool and then writing to the guard page. If the testing
   method is via reset, this function is expected to fault and reset the system. If the testing

diff --git a/UefiTestingPkg/UefiTestingPkg.dsc b/UefiTestingPkg/UefiTestingPkg.dsc
@@ -11,7 +11,7 @@
   PLATFORM_VERSION               = 1.0
   DSC_SPECIFICATION              = 0x00010005
   OUTPUT_DIRECTORY               = Build/UefiTestingPkg
-  SUPPORTED_ARCHITECTURES        = IA32|X64|ARM|AARCH64
+  SUPPORTED_ARCHITECTURES        = IA32|X64|AARCH64
   BUILD_TARGETS                  = DEBUG|RELEASE
   SKUID_IDENTIFIER               = DEFAULT