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* A custom kernel build
→VFIO: No need for a custom kernel anymore
Linux kernel driver for PCI passthrough, its appeal is that it works with graphics cards, meaning hypervisors on Linux can bypass graphics emulation for modern Windows games as opposed to having to use compatibility layers and wrappers. The catch is that the system needs;
* An IOMMU (outlined in the VT-d and AMD-Vi specs) with processor and motherboard support
And because the graphics card doesn't get utilized until the guest powers on, that also means;
* A dedicated monitor, a monitor with multiple inputs, and/or a KVM switch (not to be confused with the KVM hypervisor)
If you're using an NVIDIA card, you also need to configure how the graphics card appears to the VM so that NVIDIA's driver doesn't reject the card.
