CONFIG_KVM_ARM_VGIC is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
KVM support for Virtual GIC
configname: CONFIG_KVM_ARM_VGIC
Linux Kernel Configuration
└─>Virtualization
└─>KVM support for Virtual GIC
In linux kernel since version 3.1 (release Date: 2011-10-24)
Adds support for a hardware assisted, in-kernel GIC emulation.