default or selected kernelversion does not have config value CONFIG_DRM_XE_DEVMEM_MIRROR.
Result is shown for kernelversion 6.6.86
Enable device memory mirror
configname: CONFIG_DRM_XE_DEVMEM_MIRROR
Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Enable device memory mirror
In linux kernel since version 6.6.86 (release Date: 2025-04-07)
Disable this option only if you want to compile out without device
memory mirror. Will reduce KMD memory footprint when disabled.
memory mirror. Will reduce KMD memory footprint when disabled.