diff --git a/portable/GCC/ARM_CM3_MPU/portmacro.h b/portable/GCC/ARM_CM3_MPU/portmacro.h
index a6e2ae261..5983c7912 100644
--- a/portable/GCC/ARM_CM3_MPU/portmacro.h
+++ b/portable/GCC/ARM_CM3_MPU/portmacro.h
@@ -86,15 +86,6 @@ typedef unsigned long    UBaseType_t;
 #define portMPU_REGION_CACHEABLE_BUFFERABLE                      ( 0x07UL << 16UL )
 #define portMPU_REGION_EXECUTE_NEVER                             ( 0x01UL << 28UL )
 
-/* MPU settings that can be overriden in FreeRTOSConfig.h. */
-#ifndef configTOTAL_MPU_REGIONS
-    /* Define to 8 for backward compatibility. */
-    #define configTOTAL_MPU_REGIONS    ( 8UL )
-#elif( configTOTAL_MPU_REGIONS != 8UL )
-    /* The Cortex M3 only supports 8 MPU regions. For more information refer to:
-     * https://developer.arm.com/documentation/dui0552/a/cortex-m3-peripherals/optional-memory-protection-unit */
-    #error configTOTAL_MPU_REGIONS must be 8 for this port.
-#endif /* configTOTAL_MPU_REGIONS Check */
 #define portSTACK_REGION                                         ( 3UL )
 #define portGENERAL_PERIPHERALS_REGION                           ( 4UL )
 #define portUNPRIVILEGED_FLASH_REGION                            ( 5UL )
diff --git a/portable/GCC/MSP430F449/port.c b/portable/GCC/MSP430F449/port.c
index ca72b410b..488ad2d6f 100644
--- a/portable/GCC/MSP430F449/port.c
+++ b/portable/GCC/MSP430F449/port.c
@@ -183,16 +183,23 @@ StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
     pxTopOfStack--;
     *pxTopOfStack = ( StackType_t ) 0xbbbb;
     pxTopOfStack--;
+#ifdef __MSPGCC__
     *pxTopOfStack = ( StackType_t ) 0xcccc;
+#else
+    /* The MSP430 EABI expects the function parameter in R12. */
+    *pxTopOfStack = ( StackType_t ) pvParameters;
+#endif
     pxTopOfStack--;
     *pxTopOfStack = ( StackType_t ) 0xdddd;
     pxTopOfStack--;
     *pxTopOfStack = ( StackType_t ) 0xeeee;
     pxTopOfStack--;
-
-    /* When the task starts is will expect to find the function parameter in
-     * R15. */
+#ifdef __MSPGCC__
+    /* The mspgcc ABI expects the function parameter in R15. */
     *pxTopOfStack = ( StackType_t ) pvParameters;
+#else
+    *pxTopOfStack = ( StackType_t ) 0xffff;
+#endif
     pxTopOfStack--;
 
     /* The code generated by the mspgcc compiler does not maintain separate
diff --git a/portable/MSVC-MingW/portmacro.h b/portable/MSVC-MingW/portmacro.h
index 48a8bf4b0..9e64b7343 100644
--- a/portable/MSVC-MingW/portmacro.h
+++ b/portable/MSVC-MingW/portmacro.h
@@ -121,32 +121,50 @@ void vPortExitCritical( void );
     #define configUSE_PORT_OPTIMISED_TASK_SELECTION    1
 #endif
 
+/*-----------------------------------------------------------*/
+
 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
 
-/* Check the configuration. */
+    /* Check the configuration. */
     #if ( configMAX_PRIORITIES > 32 )
         #error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32.  It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
     #endif
 
-/* Store/clear the ready priorities in a bit map. */
-    #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities )    ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
-    #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities )     ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
-
-
-/*-----------------------------------------------------------*/
+    /* Store/clear the ready priorities in a bit map. */
+    #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities )    ( uxReadyPriorities ) |= ( ( ( UBaseType_t ) 1 ) << ( uxPriority ) )
+    #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities )     ( uxReadyPriorities ) &= ~( ( ( UBaseType_t ) 1 ) << ( uxPriority ) )
 
     #ifdef __GNUC__
-        #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
-    __asm volatile ( "bsr %1, %0\n\t"                                        \
-                     : "=r" ( uxTopPriority ) : "rm" ( uxReadyPriorities ) : "cc" )
-    #else
 
-/* BitScanReverse returns the bit position of the most significant '1'
- * in the word. */
-        #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities )    _BitScanReverse( ( DWORD * ) &( uxTopPriority ), ( uxReadyPriorities ) )
+        #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities )    \
+        __asm volatile ( "bsr %1, %0\n\t"                                       \
+                         : "=r" ( uxTopPriority )                               \
+                         : "rm" ( uxReadyPriorities )                           \
+                         : "cc" )
+
+    #else /* __GNUC__ */
+
+        /* BitScanReverse returns the bit position of the most significant '1'
+         * in the word. */
+        #if defined( __x86_64__ ) || defined( _M_X64 )
+
+            #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities )    \
+            do                                                                      \
+            {                                                                       \
+                DWORD ulTopPriority;                                                \
+                _BitScanReverse64( &ulTopPriority, ( uxReadyPriorities ) );         \
+                uxTopPriority = ulTopPriority;                                      \
+            } while( 0 )
+
+        #else /* #if defined( __x86_64__ ) || defined( _M_X64 ) */
+
+            #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities )    _BitScanReverse( ( DWORD * ) &( uxTopPriority ), ( uxReadyPriorities ) )
+
+        #endif /* #if defined( __x86_64__ ) || defined( _M_X64 ) */
+
     #endif /* __GNUC__ */
 
-#endif /* taskRECORD_READY_PRIORITY */
+#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
 
 #ifndef __GNUC__
     __pragma( warning( disable:4211 ) ) /* Nonstandard extension used, as extern is only nonstandard to MSVC. */
diff --git a/tasks.c b/tasks.c
index 9f6c5f879..b00d218bb 100644
--- a/tasks.c
+++ b/tasks.c
@@ -6212,21 +6212,25 @@ static void prvCheckTasksWaitingTermination( void )
                             }
                             else
                             {
-                                BaseType_t x;
-
-                                /* The task does not appear on the event list item of
-                                 * and of the RTOS objects, but could still be in the
-                                 * blocked state if it is waiting on its notification
-                                 * rather than waiting on an object.  If not, is
-                                 * suspended. */
-                                for( x = ( BaseType_t ) 0; x < ( BaseType_t ) configTASK_NOTIFICATION_ARRAY_ENTRIES; x++ )
+                                #if ( configUSE_TASK_NOTIFICATIONS == 1 )
                                 {
-                                    if( pxTCB->ucNotifyState[ x ] == taskWAITING_NOTIFICATION )
+                                    BaseType_t x;
+
+                                    /* The task does not appear on the event list item of
+                                     * and of the RTOS objects, but could still be in the
+                                     * blocked state if it is waiting on its notification
+                                     * rather than waiting on an object.  If not, is
+                                     * suspended. */
+                                    for( x = ( BaseType_t ) 0; x < ( BaseType_t ) configTASK_NOTIFICATION_ARRAY_ENTRIES; x++ )
                                     {
-                                        pxTaskStatus->eCurrentState = eBlocked;
-                                        break;
+                                        if( pxTCB->ucNotifyState[ x ] == taskWAITING_NOTIFICATION )
+                                        {
+                                            pxTaskStatus->eCurrentState = eBlocked;
+                                            break;
+                                        }
                                     }
                                 }
+                                #endif /* if ( configUSE_TASK_NOTIFICATIONS == 1 ) */
                             }
                         }
                         ( void ) xTaskResumeAll();