HI! all. As we know, we always use the Xlnk class to apply for memory allocation before using DMA, but in this case, the physical address obtained through input_buffer.physical_address is beyond our control. I want to know whether the physical address can be assigned by ourselves when PYNQ applies…

The physical addresses are entirely at the whim of the Linux kernel so there’s no way to specify the address for buffers in system DRAM. Is there a reason you need to? Peter

How to specify the allocated memory address in PYNQ

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cathalmccabe Split this topic April 5, 2022, 4:29pm 8

A post was split to a new topic: Allocate specific memory addresses in Pynq

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How to specify the allocated memory address in PYNQ

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