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在进行IPC通讯时，Linux申请了空间转换成了物理地址
在DSP侧后，还使用Resource_physToVirt函数，转换成DSP的虚拟地址
DSP上不能直接使用物理地址么，为什么要转换成DSP上的虚拟地址
DSP Virtual Addresses
These addresses are the ones seen by the DSP subsystem, i.e. these will be the addresses in your linker command files, etc.
详细请阅读 Understanding the Memory Map 部分的内容。
software-dl.ti.com/.../Foundational_Components_IPC.html
