GPU Software Bill Of Materials (SBOM)

This page will keep a running list of components used to achieve GPU Virtualization.

Component Table

Vendor	Component	Description	Version	OSS or Blob	Vendor Docs	Release Date	Interfaces / APIs	Notes
Arc Compute	gvm-cli	Daemon	1.0	OSS	docs.linux-gvm.org		CLI, IOCTL, RMAPI, Mediated Core	Allocates GPU resources for use with virtualization. Registers devices and mdev callbacks with the Mediated Core.
Arc Compute	gvm-mgr	Daemon		OSS	docs.linux-gvm.org		IOCTL, RMAPI, vRPC, pRPC, PCI BAR, Mediated Core	Schedules IO to and from the guest GPU driver, handles BAR-quirks (trap and emulate of some or all guest driver IO depending on availability of hardware virtualization assistance).
Microsoft	Indirect Display Driver (IDD)	Driver		OSS	Indirect Display Driver Overview		UMDF, KMDF	The Indirect Display Driver (IDD) enables GPUs to render graphics at arbitrary resolutions without a physical display connected on Windows OS systems.
Intel	i915 SR-IOV	Driver	5.15	OSS				Intel's open source GPU driver for GuC-equipped graphics accelerators.
Intel	GuC μOS	Firmware		Blob			IOMMU Interrupts, Power Management Interrupts, GTT	Handles scheduling, and power management.
Intel	HuC	Firmware		Blob			GTT	Handles video encoding/decoding.
Intel	Display Virtualization for Windows OS	Driver		OSS			udmabuf, UMDF, KMDF	Intel's 'Display Virtualization for Windows OS' provides a virtual pixel surface used for hardware graphics rendering using Microsoft's open source 'Indirect Display Driver (IDD)'. Display virtualization for Windows OS makes use of display memory sharing primitives provided in-driver by the i915 host.
Nvidia	OpenRM	Driver	525	OSS				Nvidia's open source GPU driver for GSP-equipped graphics accelerators.
Nvidia	GSP RM (uproc)	Firmware		Blob		2022.10.12	RPC	Embedded firmware based on LibOS containing the RM Core.
Nvidia	Falcon/NvRISC (uproc)	Firmware	Unknown	Blob			FBIF (Frame Buffer Interface) / GMMU	Embedded firmware which handles many aspects of the device including configuring the GPU's GMMU controller.
Nvidia	nvidia-vgpud	Daemon	v15.1	Blob			Systemd, Mediated Core	Configures the the nvidia-vgpu-mgr process.
Nvidia	nvidia-vgpu-mgr	Daemon		Blob		vRPC	vmiop, IOCTL, RMAPI, vRPC, pRPC, Mediated Core	Handles IO to and from guest RM, host RM, and hardware.
Nvidia	libnvidiavgpu.so	Library		Blob			vmiop, RMAPI, Mediated Core	Handles IO to and from guest RM, host RM, and hardware. Contains circular dependancies with nvidia-vgpu-mgr.
Nvidia	nvidia_vgpu_vfio	Driver		Blob			Type 1 IOMMU, irqfd, ioeventfd, IOCTL, Mediated Core	Handles incremental memory mapping (non-page pinning per the standard vfio-pci driver).

More Information

1. Nvidia RISC-V Story
2. linux-gvm.org
3. Intel Graphics Programmer's Reference Manuals (PRM)
4. i915: Hardware Contexts (and some bits about batchbuffers)
5. i915: The Global GTT Part 1
6. i915: Aliasing PPGTT Part 2
7. i915: True PPGTT Part 3
8. i915: Future PPGTT Part 4 (Dynamic page table allocations, 64 bit address space, GPU "mirroring", and yeah, something about relocs too)
9. i915: Security of the Intel Graphics Stack - Part 1 - Introduction
10. i915: Security of the Intel Graphics Stack - Part 2 - FW <-> GuC
11. i915: An Introduction to Intel GVT-g (with new architecture)