> But that might not be your fault. My ancient system is getting flaky. A v4.19 build that > has booted before is also resetting :-( After a power-cycle (and some time to let the machine cool off). System now boots with your patch series plus the __phys_to_pfn() #define So if you can figure the right way to fix that, you are good to go. Tested-by: Tony Luck <tony.luck@xxxxxxxxx>