From: richardbarry <richardbarry@1d2547de-c912-0410-9cb9-b8ca96c0e9e2>
Date: Sun, 12 Aug 2012 16:49:43 +0000 (+0000)
Subject: Add warning in Cortex-M3 and Cortex-M4 FreeRTOSConfig.h header files that configMAX_S... 
X-Git-Tag: V7.2.0~3
X-Git-Url: https://git.sur5r.net/?p=freertos;a=commitdiff_plain;h=afca3601aeeef74842d0847cae353e9d7025d8bd

Add warning in Cortex-M3 and Cortex-M4 FreeRTOSConfig.h header files that configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to 0.

git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@1769 1d2547de-c912-0410-9cb9-b8ca96c0e9e2
---

diff --git a/FreeRTOS/Demo/CORTEX_A2F200_IAR_and_Keil/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_A2F200_IAR_and_Keil/FreeRTOSConfig.h
index c38b38805..9df95aef7 100644
--- a/FreeRTOS/Demo/CORTEX_A2F200_IAR_and_Keil/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_A2F200_IAR_and_Keil/FreeRTOSConfig.h
@@ -148,6 +148,8 @@ to exclude the API function. */
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 #define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }	
diff --git a/FreeRTOS/Demo/CORTEX_A2F200_SoftConsole/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_A2F200_SoftConsole/FreeRTOSConfig.h
index 0a73fdc90..9cef22314 100644
--- a/FreeRTOS/Demo/CORTEX_A2F200_SoftConsole/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_A2F200_SoftConsole/FreeRTOSConfig.h
@@ -153,6 +153,8 @@ unsigned long ulGetRunTimeCounterValue( void );
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 #define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }	
diff --git a/FreeRTOS/Demo/CORTEX_AT91SAM3U256_IAR/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_AT91SAM3U256_IAR/FreeRTOSConfig.h
index 8dd09445e..96870cc4d 100644
--- a/FreeRTOS/Demo/CORTEX_AT91SAM3U256_IAR/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_AT91SAM3U256_IAR/FreeRTOSConfig.h
@@ -114,6 +114,8 @@ to exclude the API function. */
 
 
 #define configKERNEL_INTERRUPT_PRIORITY 		( 0x0f << 4 )	/* Priority 15, or 255 as only the top four bits are implemented.  This is the lowest priority. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( 5 << 4 )  	/* Priority 5, or 80 as only the top four bits are implemented. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_GCC/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_GCC/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h
index 5caa328df..1ff36560a 100644
--- a/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_GCC/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_GCC/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h
@@ -128,6 +128,8 @@ to exclude the API function. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( 7 << (8 - configPRIO_BITS) )
 
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( 5 << (8 - configPRIO_BITS) )
 
 #endif /* FREERTOS_CONFIG_H */
diff --git a/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_Keil/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_Keil/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h
index 5caa328df..1ff36560a 100644
--- a/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_Keil/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_Keil/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h
@@ -128,6 +128,8 @@ to exclude the API function. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( 7 << (8 - configPRIO_BITS) )
 
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( 5 << (8 - configPRIO_BITS) )
 
 #endif /* FREERTOS_CONFIG_H */
diff --git a/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_RVDS/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_RVDS/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h
index 5caa328df..1ff36560a 100644
--- a/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_RVDS/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_CY8C5588_PSoC_Creator_RVDS/FreeRTOS_Demo.cydsn/FreeRTOSConfig.h
@@ -128,6 +128,8 @@ to exclude the API function. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( 7 << (8 - configPRIO_BITS) )
 
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( 5 << (8 - configPRIO_BITS) )
 
 #endif /* FREERTOS_CONFIG_H */
diff --git a/FreeRTOS/Demo/CORTEX_EFMG890F128_IAR/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_EFMG890F128_IAR/FreeRTOSConfig.h
index 7eaaa4523..3cc1a5dbc 100644
--- a/FreeRTOS/Demo/CORTEX_EFMG890F128_IAR/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_EFMG890F128_IAR/FreeRTOSConfig.h
@@ -115,6 +115,8 @@ to exclude the API function. */
 
 
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_Kinetis_K60_Tower_IAR/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_Kinetis_K60_Tower_IAR/FreeRTOSConfig.h
index b7c26c8e0..98302d44e 100644
--- a/FreeRTOS/Demo/CORTEX_Kinetis_K60_Tower_IAR/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_Kinetis_K60_Tower_IAR/FreeRTOSConfig.h
@@ -152,6 +152,8 @@ PRIORITY THAN THIS! (higher priorities are lower numeric values. */
 /* Interrupt priorities used by the kernel port layer itself.  These are generic
 to all Cortex-M ports, and do not rely on any particular library functions. */
 #define configKERNEL_INTERRUPT_PRIORITY 		( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 /* Normal assert() semantics without relying on the provision of an assert.h
diff --git a/FreeRTOS/Demo/CORTEX_LM3S102_GCC/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3S102_GCC/FreeRTOSConfig.h
index 47cc90a13..82e3687d7 100644
--- a/FreeRTOS/Demo/CORTEX_LM3S102_GCC/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3S102_GCC/FreeRTOSConfig.h
@@ -107,6 +107,8 @@ to exclude the API function. */
 #define INCLUDE_vTaskDelay				1
 
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3S102_KEIL/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3S102_KEIL/FreeRTOSConfig.h
index aaea9d7a1..ed5613307 100644
--- a/FreeRTOS/Demo/CORTEX_LM3S102_KEIL/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3S102_KEIL/FreeRTOSConfig.h
@@ -107,6 +107,8 @@ to exclude the API function. */
 #define INCLUDE_vTaskDelay				1
 
 #define configKERNEL_INTERRUPT_PRIORITY 255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo1/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo1/FreeRTOSConfig.h
index 47cc90a13..82e3687d7 100644
--- a/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo1/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo1/FreeRTOSConfig.h
@@ -107,6 +107,8 @@ to exclude the API function. */
 #define INCLUDE_vTaskDelay				1
 
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo2/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo2/FreeRTOSConfig.h
index 3b7ed55c3..7cb4f85d3 100644
--- a/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo2/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo2/FreeRTOSConfig.h
@@ -108,6 +108,8 @@ to exclude the API function. */
 
 
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo3/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo3/FreeRTOSConfig.h
index da9e4c5ab..114b80ec9 100644
--- a/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo3/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3S102_Rowley/Demo3/FreeRTOSConfig.h
@@ -107,6 +107,8 @@ to exclude the API function. */
 #define INCLUDE_vTaskDelay				0
 
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3S316_IAR/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3S316_IAR/FreeRTOSConfig.h
index 41bb699a2..86613ea8e 100644
--- a/FreeRTOS/Demo/CORTEX_LM3S316_IAR/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3S316_IAR/FreeRTOSConfig.h
@@ -107,6 +107,8 @@ to exclude the API function. */
 #define INCLUDE_vTaskDelay				1
 
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3S811_GCC/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3S811_GCC/FreeRTOSConfig.h
index 632c8a554..98cd0c814 100644
--- a/FreeRTOS/Demo/CORTEX_LM3S811_GCC/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3S811_GCC/FreeRTOSConfig.h
@@ -107,6 +107,8 @@ to exclude the API function. */
 #define INCLUDE_vTaskDelay				1
 
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3S811_IAR/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3S811_IAR/FreeRTOSConfig.h
index 1183cd7cb..145b9bcd1 100644
--- a/FreeRTOS/Demo/CORTEX_LM3S811_IAR/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3S811_IAR/FreeRTOSConfig.h
@@ -108,6 +108,8 @@ to exclude the API function. */
 
 
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3S811_KEIL/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3S811_KEIL/FreeRTOSConfig.h
index 73c654157..d211d9f9b 100644
--- a/FreeRTOS/Demo/CORTEX_LM3S811_KEIL/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3S811_KEIL/FreeRTOSConfig.h
@@ -107,6 +107,8 @@ to exclude the API function. */
 #define INCLUDE_vTaskDelay				1
 
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3Sxxxx_Eclipse/RTOSDemo/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3Sxxxx_Eclipse/RTOSDemo/FreeRTOSConfig.h
index 3b9fbc24c..476880cf3 100644
--- a/FreeRTOS/Demo/CORTEX_LM3Sxxxx_Eclipse/RTOSDemo/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3Sxxxx_Eclipse/RTOSDemo/FreeRTOSConfig.h
@@ -115,6 +115,8 @@ to exclude the API function. */
 
 
 #define configKERNEL_INTERRUPT_PRIORITY 		( ( unsigned char ) 7 << ( unsigned char ) 5 )	/* Priority 7, or 255 as only the top three bits are implemented.  This is the lowest priority. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( ( unsigned char ) 5 << ( unsigned char ) 5 )  /* Priority 5, or 160 as only the top three bits are implemented. */
 
 extern volatile unsigned long ulHighFrequencyTimerTicks;
diff --git a/FreeRTOS/Demo/CORTEX_LM3Sxxxx_IAR_Keil/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3Sxxxx_IAR_Keil/FreeRTOSConfig.h
index 54b8dfa52..57578c826 100644
--- a/FreeRTOS/Demo/CORTEX_LM3Sxxxx_IAR_Keil/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3Sxxxx_IAR_Keil/FreeRTOSConfig.h
@@ -114,6 +114,8 @@ to exclude the API function. */
 
 
 #define configKERNEL_INTERRUPT_PRIORITY 		( 7 << 5 )	/* Priority 7, or 255 as only the top three bits are implemented.  This is the lowest priority. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( 5 << 5 )  /* Priority 5, or 160 as only the top three bits are implemented. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_LM3Sxxxx_Rowley/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LM3Sxxxx_Rowley/FreeRTOSConfig.h
index de542ae1b..9448ad8f4 100644
--- a/FreeRTOS/Demo/CORTEX_LM3Sxxxx_Rowley/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LM3Sxxxx_Rowley/FreeRTOSConfig.h
@@ -116,6 +116,8 @@ to exclude the API function. */
 
 
 #define configKERNEL_INTERRUPT_PRIORITY 		( ( unsigned char ) 7 << ( unsigned char ) 5 )	/* Priority 7, or 255 as only the top three bits are implemented.  This is the lowest priority. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( ( unsigned char ) 5 << ( unsigned char ) 5 )  /* Priority 5, or 160 as only the top three bits are implemented. */
 
 extern volatile unsigned long ulHighFrequencyTimerTicks;
diff --git a/FreeRTOS/Demo/CORTEX_LPC1768_GCC_RedSuite/src/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LPC1768_GCC_RedSuite/src/FreeRTOSConfig.h
index 6274a2ff1..fdf1366d0 100644
--- a/FreeRTOS/Demo/CORTEX_LPC1768_GCC_RedSuite/src/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LPC1768_GCC_RedSuite/src/FreeRTOSConfig.h
@@ -157,6 +157,8 @@ to exclude the API function. */
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( 31 << (8 - configPRIO_BITS) )
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( 5 << (8 - configPRIO_BITS) )
 
 /* Priorities passed to NVIC_SetPriority() do not require shifting as the
diff --git a/FreeRTOS/Demo/CORTEX_LPC1768_GCC_Rowley/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LPC1768_GCC_Rowley/FreeRTOSConfig.h
index d2d0cce1c..25ec915ed 100644
--- a/FreeRTOS/Demo/CORTEX_LPC1768_GCC_Rowley/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LPC1768_GCC_Rowley/FreeRTOSConfig.h
@@ -149,6 +149,8 @@ to exclude the API function. */
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( 31 << (8 - configPRIO_BITS) )
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( 5 << (8 - configPRIO_BITS) )
 
 /* Priorities passed to NVIC_SetPriority() do not require shifting as the
diff --git a/FreeRTOS/Demo/CORTEX_LPC1768_IAR/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_LPC1768_IAR/FreeRTOSConfig.h
index 695173e66..7ea588912 100644
--- a/FreeRTOS/Demo/CORTEX_LPC1768_IAR/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_LPC1768_IAR/FreeRTOSConfig.h
@@ -147,6 +147,8 @@ to exclude the API function. */
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( 31 << (8 - configPRIO_BITS) )
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( 5 << (8 - configPRIO_BITS) )
 
 /* Priorities passed to NVIC_SetPriority() do not require shifting as the
diff --git a/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_GCC_Atollic/src/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_GCC_Atollic/src/FreeRTOSConfig.h
index 90cd91c99..ff8e4d762 100644
--- a/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_GCC_Atollic/src/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_GCC_Atollic/src/FreeRTOSConfig.h
@@ -153,6 +153,8 @@ PRIORITY THAN THIS! (higher priorities are lower numeric values. */
 /* Interrupt priorities used by the kernel port layer itself.  These are generic
 to all Cortex-M ports, and do not rely on any particular library functions. */
 #define configKERNEL_INTERRUPT_PRIORITY 		( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 /* Normal assert() semantics without relying on the provision of an assert.h
diff --git a/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_IAR/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_IAR/FreeRTOSConfig.h
index 75f225fd7..fd6a7b499 100644
--- a/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_IAR/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_IAR/FreeRTOSConfig.h
@@ -149,6 +149,8 @@ PRIORITY THAN THIS! (higher priorities are lower numeric values. */
 /* Interrupt priorities used by the kernel port layer itself.  These are generic
 to all Cortex-M ports, and do not rely on any particular library functions. */
 #define configKERNEL_INTERRUPT_PRIORITY 		( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 /* Normal assert() semantics without relying on the provision of an assert.h
diff --git a/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_Keil/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_Keil/FreeRTOSConfig.h
index a3a451e3a..715330aea 100644
--- a/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_Keil/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_Keil/FreeRTOSConfig.h
@@ -146,6 +146,8 @@ PRIORITY THAN THIS! (higher priorities are lower numeric values. */
 /* Interrupt priorities used by the kernel port layer itself.  These are generic
 to all Cortex-M ports, and do not rely on any particular library functions. */
 #define configKERNEL_INTERRUPT_PRIORITY 		( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 /* Normal assert() semantics without relying on the provision of an assert.h
diff --git a/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_Tasking/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_Tasking/FreeRTOSConfig.h
index b15a25bd0..ecc22e664 100644
--- a/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_Tasking/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_M4F_Infineon_XMC4500_Tasking/FreeRTOSConfig.h
@@ -154,6 +154,8 @@ PRIORITY THAN THIS! (higher priorities are lower numeric values. */
 /* Interrupt priorities used by the kernel port layer itself.  These are generic
 to all Cortex-M ports, and do not rely on any particular library functions. */
 #define configKERNEL_INTERRUPT_PRIORITY 		( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 /* Normal assert() semantics without relying on the provision of an assert.h
diff --git a/FreeRTOS/Demo/CORTEX_M4F_M0_LPC43xx_Keil/M4/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_M4F_M0_LPC43xx_Keil/M4/FreeRTOSConfig.h
index b586a21ca..c9c3a5702 100644
--- a/FreeRTOS/Demo/CORTEX_M4F_M0_LPC43xx_Keil/M4/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_M4F_M0_LPC43xx_Keil/M4/FreeRTOSConfig.h
@@ -148,6 +148,8 @@ PRIORITY THAN THIS! (higher priorities are lower numeric values. */
 /* Interrupt priorities used by the kernel port layer itself.  These are generic
 to all Cortex-M ports, and do not rely on any particular library functions. */
 #define configKERNEL_INTERRUPT_PRIORITY 		( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 /* Normal assert() semantics without relying on the provision of an assert.h
diff --git a/FreeRTOS/Demo/CORTEX_M4F_STM32F407ZG-SK/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_M4F_STM32F407ZG-SK/FreeRTOSConfig.h
index 04d030bc6..7d74c4407 100644
--- a/FreeRTOS/Demo/CORTEX_M4F_STM32F407ZG-SK/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_M4F_STM32F407ZG-SK/FreeRTOSConfig.h
@@ -148,6 +148,8 @@ PRIORITY THAN THIS! (higher priorities are lower numeric values. */
 /* Interrupt priorities used by the kernel port layer itself.  These are generic
 to all Cortex-M ports, and do not rely on any particular library functions. */
 #define configKERNEL_INTERRUPT_PRIORITY 		( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 /* Normal assert() semantics without relying on the provision of an assert.h
diff --git a/FreeRTOS/Demo/CORTEX_M4_ATSAM4S_Atmel_Studio/src/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_M4_ATSAM4S_Atmel_Studio/src/FreeRTOSConfig.h
index 94c791cfa..0c1a671fd 100644
--- a/FreeRTOS/Demo/CORTEX_M4_ATSAM4S_Atmel_Studio/src/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_M4_ATSAM4S_Atmel_Studio/src/FreeRTOSConfig.h
@@ -152,6 +152,8 @@ PRIORITY THAN THIS! (higher priorities are lower numeric values. */
 /* Interrupt priorities used by the kernel port layer itself.  These are generic
 to all Cortex-M ports, and do not rely on any particular library functions. */
 #define configKERNEL_INTERRUPT_PRIORITY 		( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 /* Normal assert() semantics without relying on the provision of an assert.h
diff --git a/FreeRTOS/Demo/CORTEX_MB9A310_IAR_Keil/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_MB9A310_IAR_Keil/FreeRTOSConfig.h
index dc5009a68..956fd9205 100644
--- a/FreeRTOS/Demo/CORTEX_MB9A310_IAR_Keil/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_MB9A310_IAR_Keil/FreeRTOSConfig.h
@@ -141,6 +141,8 @@ to exclude the API function. */
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 #define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }	
diff --git a/FreeRTOS/Demo/CORTEX_MB9B500_IAR_Keil/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_MB9B500_IAR_Keil/FreeRTOSConfig.h
index 1719d3dd6..09e770ba5 100644
--- a/FreeRTOS/Demo/CORTEX_MB9B500_IAR_Keil/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_MB9B500_IAR_Keil/FreeRTOSConfig.h
@@ -141,6 +141,8 @@ to exclude the API function. */
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 #define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }	
diff --git a/FreeRTOS/Demo/CORTEX_MPU_LM3Sxxxx_Rowley/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_MPU_LM3Sxxxx_Rowley/FreeRTOSConfig.h
index 51898d31f..b9a99695d 100644
--- a/FreeRTOS/Demo/CORTEX_MPU_LM3Sxxxx_Rowley/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_MPU_LM3Sxxxx_Rowley/FreeRTOSConfig.h
@@ -122,6 +122,8 @@ to exclude the API function. */
 #define configUNUSED_PRIO_BITS ( ( unsigned char ) ( 8 - configPRIO_BITS ) )
 
 #define configKERNEL_INTERRUPT_PRIORITY 		( ( unsigned char ) 7 << configUNUSED_PRIO_BITS )	/* Priority 7, or 255 as only the top three bits are implemented.  This is the lowest priority. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( ( unsigned char ) 5 << configUNUSED_PRIO_BITS )  /* Priority 5, or 160 as only the top three bits are implemented. */
 
 #endif /* FREERTOS_CONFIG_H */
diff --git a/FreeRTOS/Demo/CORTEX_MPU_LPC1768_GCC_RedSuite/src/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_MPU_LPC1768_GCC_RedSuite/src/FreeRTOSConfig.h
index b449d3b83..06df83c0f 100644
--- a/FreeRTOS/Demo/CORTEX_MPU_LPC1768_GCC_RedSuite/src/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_MPU_LPC1768_GCC_RedSuite/src/FreeRTOSConfig.h
@@ -134,6 +134,8 @@ to exclude the API function. */
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( 31 << (8 - configPRIO_BITS) )
 /* Priority 5, or 160 as only the top three bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( 5 << (8 - configPRIO_BITS) )
 
 
diff --git a/FreeRTOS/Demo/CORTEX_STM32F100_Atollic/Simple_Demo_Source/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_STM32F100_Atollic/Simple_Demo_Source/FreeRTOSConfig.h
index 503ddf5b9..8a20e668a 100644
--- a/FreeRTOS/Demo/CORTEX_STM32F100_Atollic/Simple_Demo_Source/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_STM32F100_Atollic/Simple_Demo_Source/FreeRTOSConfig.h
@@ -142,6 +142,8 @@ to exclude the API function. */
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 /* Priority 5, or 95 as only the top four bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 	
 #define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }	
diff --git a/FreeRTOS/Demo/CORTEX_STM32F103_GCC_Rowley/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_STM32F103_GCC_Rowley/FreeRTOSConfig.h
index 359ae76f0..d95c4ef41 100644
--- a/FreeRTOS/Demo/CORTEX_STM32F103_GCC_Rowley/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_STM32F103_GCC_Rowley/FreeRTOSConfig.h
@@ -118,6 +118,8 @@ to exclude the API function. */
 /* This is the raw value as per the Cortex-M3 NVIC.  Values can be 255
 (lowest) to 0 (1?) (highest). */
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xb0, or priority 11. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_STM32F103_IAR/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_STM32F103_IAR/FreeRTOSConfig.h
index 53c690c4b..181e2a1fa 100644
--- a/FreeRTOS/Demo/CORTEX_STM32F103_IAR/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_STM32F103_IAR/FreeRTOSConfig.h
@@ -110,6 +110,8 @@ to exclude the API function. */
 /* This is the raw value as per the Cortex-M3 NVIC.  Values can be 255
 (lowest) to 0 (1?) (highest). */
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xb0, or priority 11. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_STM32F103_Keil/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_STM32F103_Keil/FreeRTOSConfig.h
index 53c690c4b..181e2a1fa 100644
--- a/FreeRTOS/Demo/CORTEX_STM32F103_Keil/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_STM32F103_Keil/FreeRTOSConfig.h
@@ -110,6 +110,8 @@ to exclude the API function. */
 /* This is the raw value as per the Cortex-M3 NVIC.  Values can be 255
 (lowest) to 0 (1?) (highest). */
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xb0, or priority 11. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_STM32F103_Primer_GCC/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_STM32F103_Primer_GCC/FreeRTOSConfig.h
index 803617a2a..f5674390e 100644
--- a/FreeRTOS/Demo/CORTEX_STM32F103_Primer_GCC/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_STM32F103_Primer_GCC/FreeRTOSConfig.h
@@ -114,6 +114,8 @@ to exclude the API function. */
 /* This is the raw value as per the Cortex-M3 NVIC.  Values can be 255
 (lowest) to 0 (1?) (highest). */
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xb0, or priority 11. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_STM32F107_GCC_Rowley/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_STM32F107_GCC_Rowley/FreeRTOSConfig.h
index 0474c509b..f47d9ba7f 100644
--- a/FreeRTOS/Demo/CORTEX_STM32F107_GCC_Rowley/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_STM32F107_GCC_Rowley/FreeRTOSConfig.h
@@ -118,6 +118,8 @@ to exclude the API function. */
 /* This is the raw value as per the Cortex-M3 NVIC.  Values can be 255
 (lowest) to 0 (1?) (highest). */
 #define configKERNEL_INTERRUPT_PRIORITY 		255
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xb0, or priority 11. */
 
 
diff --git a/FreeRTOS/Demo/CORTEX_STM32L152_IAR/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_STM32L152_IAR/FreeRTOSConfig.h
index 60965265b..660925c78 100644
--- a/FreeRTOS/Demo/CORTEX_STM32L152_IAR/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_STM32L152_IAR/FreeRTOSConfig.h
@@ -127,6 +127,8 @@ to exclude the API function. */
 /* The lowest priority. */
 #define configKERNEL_INTERRUPT_PRIORITY 	( configLIBRARY_LOWEST_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 /* Priority 5, or 95 as only the top four bits are implemented. */
+/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
+See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY 	( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
 
 /* Prevent the following definitions being included when FreeRTOSConfig.h