I saw an article regarding PA-MR.
Does this “physical address” contain all physical memory addresses, including PCIe memory-mapped I/O registers? Is it available for remote nodes to write I/O commands to device registers through PA-MR?
I want to implement this feature (remote MMIO register write) but normal ibv_reg_mr() fails for virtual addresses mapped to MMIO registers, because in my thought these regions are not mapped to memory, but mapped to I/O. So I am trying to register a MR for the MMIO registers with PA-MR.