Microsoft Hyper-V root partition support

modulename: mshv_root.ko

configname: CONFIG_MSHV_ROOT

Linux Kernel Configuration
└─>Device Drivers
└─>Microsoft Hyper-V guest support
└─>Microsoft Hyper-V root partition support
In linux kernel since version 6.6.86 (release Date: 2025-04-07)  
Select this option to enable support for booting and running as root
partition on Microsoft Hyper-V.

If unsure, say N.

source code: