Hyper-V x2APIC IRQ Handling

modulename: hyperv-iommu.ko

configname: CONFIG_HYPERV_IOMMU

Linux Kernel Configuration
└─>Device Drivers
└─>IOMMU Hardware Support
└─>Hyper-V x2APIC IRQ Handling
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Stub IOMMU driver to handle IRQs as to allow Hyper-V Linux
guests to run with x2APIC mode enabled.

source code:
drivers/iommu/hyperv-iommu.c