Intel Trust Domain Extensions (TDX) support

configname: CONFIG_KVM_INTEL_TDX

Linux Kernel Configuration
└─>Virtualization
└─>Intel Trust Domain Extensions (TDX) support
In linux kernel since version 5.4.297 (release Date: 2025-08-28)  
Provides support for launching Intel Trust Domain Extensions (TDX)
confidential VMs on Intel processors.

If unsure, say N.