Intel 11th Generation Mobile Xeon GVT Disabled

[sempervictus]

Using 0000:00:02.0 VGA compatible controller [0300]: Intel Corporation Tiger Lake-H GT1 [UHD Graphics] [8086:9a70] (rev 01) i'm seeing i915 0000:00:02.0: [drm] Unsupported device. GVT-g is disabled in dmesg despite

# cat /sys/module/i915/parameters/enable_gvt 
Y

which seems incorrect for a Xeon platform which is setup to virtualize workloads quite well.
Linux is 6.0.17 (6.1.5 has some sort of KMS/modeset issue which causes early-init crashes before i can access any logs)