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How to read GDS using PM4 packets in Vega 10?

Question asked by harry1 on Oct 12, 2020
Latest reply on Oct 19, 2020 by dipak

Hi, I recently do some experiments with the global data share(GDS). I wrote a kernel that simply writes some contents into GDS starting from address 0 using ds_write instructions.

The question is how to read the contents using PM4 packets without launch a "read kernel".

I have tried PACKET3_COPY_DATA and PACKET3_DMA_DATA, but these packets will hang and never return. 

I was wondering if it is possible to read GDS using PM4 packets.