Zero copy between ISR, kernel and User

Hello,

I would like to allow the transferring of data between ISR's, kernel anduser code, without requiring copying. I envision allocating buffers inthe kernel and then mapping them so that they appear at the sameaddresses to all code, and never being swapped out of memory.

Is this feasible for all supported Linux architectures and is thereexisting code that someone could point me towards?


Regards,

Wink Saville

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