default or selected kernelversion does not have config value CONFIG_DEBUG_IOREMAP.
Result is shown for kernelversion 5.4.123
Enable ioremap() debugging
configname: CONFIG_DEBUG_IOREMAP
Linux Kernel Configuration
└─>Enable ioremap() debugging
In linux kernel since version 2.6.12
Enabling this option will cause the kernel to distinguish between
ioremapped and physical addresses. It will print a backtrace (at
most one every 10 seconds), hopefully allowing you to see which
drivers need work. Fixing all these problems is a prerequisite
for turning on USE_HPPA_IOREMAP. The warnings are harmless;
the kernel has enough information to fix the broken drivers
automatically, but we'd like to make it more efficient by not
having to do that.
ioremapped and physical addresses. It will print a backtrace (at
most one every 10 seconds), hopefully allowing you to see which
drivers need work. Fixing all these problems is a prerequisite
for turning on USE_HPPA_IOREMAP. The warnings are harmless;
the kernel has enough information to fix the broken drivers
automatically, but we'd like to make it more efficient by not
having to do that.