With default cfgMode see map warnings in syslog

[gadorlhiac]

This is likely a low priority item but will note it here for general awareness.

When using the default cfgMode for the datagpu driver (0x0 or 0x1 I believe), there seems to be a discrepancy in the requested memory type (with respect to caching) and that returned by the kernel. This occurs at least while running from DAQ software.

E.g. the following messages will appear in the system logs:

# ...
Nov 25 11:36:28 drp-srcf-gpu003 kernel: drp_gpu:14033 map pfn RAM range req uncached-minus for [mem 0x1deec80000-0x1deecfffff], got write-back
Nov 25 11:36:28 drp-srcf-gpu003 kernel: drp_gpu:14033 map pfn RAM range req uncached-minus for [mem 0x1deed00000-0x1deed7ffff], got write-back
Nov 25 11:36:28 drp-srcf-gpu003 kernel: drp_gpu:14033 map pfn RAM range req uncached-minus for [mem 0x1deed80000-0x1deedfffff], got write-back
Nov 25 11:36:28 drp-srcf-gpu003 kernel: drp_gpu:14033 map pfn RAM range req uncached-minus for [mem 0x1deee00000-0x1deee7ffff], got write-back
Nov 25 11:36:28 drp-srcf-gpu003 kernel: drp_gpu:14033 map pfn RAM range req uncached-minus for [mem 0x1deee80000-0x1deeefffff], got write-back
# ...

When reloading the driver with cfgMode=0x2 the messages disappear.