Re: [lwip-users] lwip and MPU (FreeRTOS-MPU)

[Richard Barry]

On 30/08/2012 13:26, jblackarty wrote:
>> Hi,
>>
>> do you mean this situation?
>>
>> Thread A = tcpip thread - stack protected by MPU, only A and
>> privileged mode can access it
>> Thread B = user thread - stack protected by MPU, only B and privileged
>> mode can access it
>> [...]
> 
> Yes.
> 
>> The privileged kernel does not use the task stack for its own 
>> variables/return
>> addresses/etc.
> 
> Richard, I'm going to surprise you. It does! 

Of course - you are right when you make API function calls.  In my mind
I was just thinking about the tick interrupt and context switch
interrupt - which uses the system stack.


Regards,
Richard.

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