GPU Software Bill Of Materials (SBOM)

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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.
Arc Compute gvm-mgr Daemon docs.linux-gvm.org 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.
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 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.
Nvidia GSP RM (uproc) Firmware Blob 2023.01.31 RPC Embedded firmware based on LibOS containing the RM Core.
Nvidia 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 nvidia-vgpud Daemon v15.1 Blob docs.nvidia.com/grid 2023.01.xx Systemd, Mediated Core Configures the the nvidia-vgpu-mgr process.
Nvidia 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.
Nvidia 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 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)