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Autosar OS Multicore Share Resources confusion ?

Following is what some source says about Autosar OS Multicore Support:

1.  Communication via shared memory.  Spinlocks are used for critical sections.

2.  You can not share resources between cores.

Isn't this contradicting ?   I believe memory is a shared resource.  If the memory can not be shared between cores, then, how can they communicate via shared memory?
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Gary Patterson, CISSP
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