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omap-L138 打算用 shared memory 作为 ARM 和 DSP 的共享内存,解决 Cache 问题用什么函数?

两种方案:1、每次操作通信用共享内存时刷 cache;2、设置shared memory 的某段范围为 cache disable

查了好久,没有查到相应的函数,麻烦给个例子,谢谢!