default or selected kernelversion does not have config value CONFIG_IDE_XFER_MODE.
Result is shown for kernelversion 6.9.9

CONFIG_IDE_XFER_MODE (not configurable)

configname: CONFIG_IDE_XFER_MODE

Linux Kernel Configuration
└─>Device Drivers
└─>ATA/ATAPI/MFM/RLL support (DEPRECATED)
└─>IDE_XFER_MODE
In linux kernel since version 2.6.30 (release Date: 2009-06-09)