CXL: Region Support
configname: CONFIG_CXL_REGION
Linux Kernel Configuration
└─>Device Drivers
└─>CXL (Compute Express Link) Devices Support
└─>CXL: Region Support
In linux kernel since version 4.14.326 (release Date: 2023-09-23)
Enable the CXL core to enumerate and provision CXL regions. A CXL
region is defined by one or more CXL expanders that decode a given
system-physical address range. For CXL regions established by
platform-firmware this option enables memory error handling to
identify the devices participating in a given interleaved memory
range. Otherwise, platform-firmware managed CXL is enabled by being
placed in the system address map and does not need a driver.
If unsure say 'y'
region is defined by one or more CXL expanders that decode a given
system-physical address range. For CXL regions established by
platform-firmware this option enables memory error handling to
identify the devices participating in a given interleaved memory
range. Otherwise, platform-firmware managed CXL is enabled by being
placed in the system address map and does not need a driver.
If unsure say 'y'