Hello! I am working on some driver, which needs to allocate a big contiguous memory block (~10 MB) and has to work on multiple platforms (x86, arm, arm64, mips, powerpc). CMA - is the most appropriate way in this case, but I have faced an unexpected problem - the fact that the CMA subsystem is not integrated into the DMA subsystem for powerpc, and I cannot request memory from CMA area from my kernel module. The question is: is there any work in progress on CMA to DMA integration? Or is it decided not to perform such work at all? And, is there any legal way to allocate a big contiguous memory block from the kernel module on powerpc?
Thanks for your help, Max
