problem about RTEMS support mutiprocessor!

[red-eye at 263.net]

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hello,
how RTEMS support SMP? (tightly-coupled use shared memory)
i study the mp samples test!
i guess if they work like this:
there is same code in all processors's ROM .every processor select instructions to execute by "if" and their node number.
if not , how the RTEMS work with mutiprocessor?

does RTEMS support system restructure and fault(include hardware fault and software fault) inspect and fault restore in execute time?
that is ,does RTEMS support task redistribution to processors in execute time?
when there is fault ,such as one processor is broken(can not work),RTEMS can restructure
system and make the system run ok.
if RTEMS support those ,how RTEMS support?        thanks alot




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