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	2023.01.06	CLI, IOCTL, RMAPI, Mediated Core	Allocates GPU resources for use with virtualization. Registers devices and mdev callbacks with the Mediated Core.
	gvm-mgr	Daemon				2023.01.06	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.
RedHat	vfio_pci	Driver	6.2-rc1	OSS	RedHat, kernel.org	2022.12.15	irqfd, ioeventfd, IOCTL	Reference VFIO Stub driver used for discrete assignment of IO, and assignment of some SR-IOV-backed vGPU devices into virtual machines. This driver is commonly replaced with a vendor built VFIO interface with differing memory management and/or page pinning mechanisms which are specific to the vGPU software internals.
Intel	i915 SR-IOV	Driver	5.15	OSS				Intel's open source GPU driver for GuC-equipped graphics accelerators.
	GuC μOS	Firmware		Blob			IOMMU Interrupts, Power Management Interrupts, GTT	Handles scheduling, and power management.
	HuC	Firmware		Blob			GTT	Handles video encoding/decoding.
	Display Virtualization for Windows OS	Driver	791	OSS	github.com/intel/Display-Virtualization-for-Windows-OS/blob/main/Readme.txt		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	525.85.12	OSS	github.com/NVIDIA/open-gpu-kernel-modules/blob/main/README.md	2023.01.31		Nvidia's open source GPU driver for GSP-equipped graphics accelerators.
	GSP RM (uproc)	Firmware		Blob		2023.01.31	RPC	Embedded firmware based on LibOS containing the RM Core.
	Falcon/NvRISC (uproc)	Firmware		Blob			FBIF (Frame Buffer Interface) / GMMU	Embedded firmware which handles many aspects of the device including configuring the GPU's GMMU controller.
	nvidia-vgpud	Daemon	v15.1	Blob	docs.nvidia.com/grid	2023.01.xx	Systemd, Mediated Core	Configures the the nvidia-vgpu-mgr process.
	nvidia-vgpu-mgr	Daemon		Blob		2023.01.xx	vmiop, IOCTL, RMAPI, vRPC, pRPC, Mediated Core	Handles IO to and from guest RM, host RM, and hardware.
	libnvidiavgpu.so	Library		Blob		2023.01.xx	vmiop, RMAPI, Mediated Core	Handles IO to and from guest RM, host RM, and hardware. Contains circular dependancies with nvidia-vgpu-mgr.
	nvidia_vgpu_vfio	Driver		Blob		2023.01.xx	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)