kernelconfig_penguin
CONFIG_ARCH_IOREMAP is not available for the default architecture x86.
Result is shown for architecture loongarch

Enable LoongArch DMW-based ioremap()

configname: CONFIG_ARCH_IOREMAP

Linux Kernel Configuration
└─> Kernel type and options
└─> Enable LoongArch DMW-based ioremap()

We use generic TLB-based ioremap() by default since it has page
protection support. However, you can enable LoongArch DMW-based
ioremap() for better performance.