Using A100 device. How to get the Nvidia driver to configure 10bit pcie requester tag? Is there a driver configuration for this?
Tried using setpci on device DevCtl2 config register to no avail. Sometimes it appears to get reset somehow - is there a hidden config audit scan?
I have since been successful in configuring 10 bit request tag in the A100 device (it was being reset after my initial configuration), but tests still show only short tags being used. Does the root complex also require configuration - my thoughts were that as long as the root complex supported 10 bit completion tags then device initiated MRd should just work using 10 bit requester tags, but we don’t see that on the PCIe analyzer. Is the Nvidia driver just ignoring the configuration?