RTEMS Porting Guide
The CPU_MPCI_RECEIVE_SERVER_EXTRA_STACK macro is set to the amount of stack space above the minimum thread stack space required by the MPCI Receive Server Thread. This macro is needed because in a multiprocessor system the MPCI Receive Server Thread must be able to process all directives.
#define CPU_MPCI_RECEIVE_SERVER_EXTRA_STACK 0
RTEMS Porting Guide
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