**NOTICE**: the vGPU VFIO module needs CONFIG_IOMMUFD=n to function properly. No Arch pre-built kernels, to my knowledge, are built with this config option set correctly, so you will have to build your own kernel.
`makepkg` will by default build with linux 6.1x patches.
To disable them, use `_use_new_patches="false" makepkg`. This is useful if you're not using a upstream kernel, since the later patches break building on older kernels.