vhost-device-gpu: Add Initial Implementation

This program is a vhost-user backend daemon that provides
VIRTIO GPU device emulation as specified in the VIRTIO Spec v.1.2
https://docs.oasis-open.org/virtio/virtio/v1.2/csd01/virtio-v1.2-csd01.html
This crate utilizes the rutabaga crate from crosvm with some
minor modification to rutabaga crate to fix compilation.
This crate depends on this PR[rust-vmm/vhost#239]
that implements support for QEMU's vhost-user-gpu protocol.

This device uses the rutabaga_gfx crate to offer two rendering backends:
1. Virglrenderer:
   - Rutabaga translates OpenGL API and Vulkan calls to an intermediate
     representation and allows for OpenGL acceleration on the host.
2. Gfxstream:
   - GLES and Vulkan calls are forwarded to the host.

These backends can be used by simply changing the `--gpu-mode` command
line option.
This crate also includes some modifications from libkrun virtio-gpu device
https://github.com/containers/libkrun/tree/main/src/devices/src/virtio/gpu

Fixes: #598

Co-authored-by: Dorinda Bassey <dbassey@redhat.com>
Co-authored-by: Matej Hrica <mhrica@redhat.com>

Signed-off-by: Dorinda Bassey <dbassey@redhat.com>
Signed-off-by: Matej Hrica <mhrica@redhat.com>

staging/Cargo.toml

@@ -1,5 +1,6 @@
 [workspace]
 resolver = "2"
 members = [
+  "vhost-device-gpu",
   "vhost-device-video",
 ]

staging/coverage_config_x86_64.json

@@ -1,5 +1,5 @@
 {
-  "coverage_score": 74.82,
+  "coverage_score": 79.80,
   "exclude_path": "",
   "crate_features": ""
 }

staging/vhost-device-gpu/CHANGELOG.md

@@ -0,0 +1,10 @@
+# Changelog
+## Unreleased
+
+### Added
+
+### Changed
+
+### Fixed
+
+### Deprecated

staging/vhost-device-gpu/Cargo.toml

@@ -0,0 +1,39 @@
+[package]
+name = "vhost-device-gpu"
+version = "0.1.0"
+authors = ["Dorinda Bassey <dbassey@redhat.com>", "Matej Hrica <mhrica@redhat.com>"]
+description = "A virtio-gpu device using the vhost-user protocol."
+repository = "https://github.com/rust-vmm/vhost-device"
+readme = "README.md"
+keywords = ["gpu", "vhost", "vhost-user", "virtio"]
+categories = ["multimedia::video", "virtualization"]
+license = "Apache-2.0 OR BSD-3-Clause"
+edition = "2021"
+publish = false
+
+[features]
+xen = ["vm-memory/xen", "vhost/xen", "vhost-user-backend/xen"]
+
+[dependencies]
+clap = { version = "4.4", features = ["derive"] }
+env_logger = "0.11.5"
+libc = "0.2"
+log = "0.4"
+
+[target.'cfg(not(target_env = "musl"))'.dependencies]
+rutabaga_gfx = { version = "0.1.4", features = ["gfxstream", "virgl_renderer"] }
+thiserror = "2.0.3"
+vhost = { version = "0.13.0", features = ["vhost-user-backend"] }
+vhost-user-backend = "0.17"
+virtio-bindings = "0.2.2"
+virtio-queue = "0.14.0"
+vm-memory = "0.16.1"
+vmm-sys-util = "0.12.1"
+
+[dev-dependencies]
+assert_matches = "1.5"
+tempfile = "3.13"
+virtio-queue = { version = "0.14", features = ["test-utils"] }
+vm-memory = { version = "0.16.1", features = ["backend-mmap", "backend-atomic"] }
+mockall = "0.13.0"
+rusty-fork = "0.3.0"

staging/vhost-device-gpu/LICENSE-APACHE

@@ -0,0 +1 @@
+../../LICENSE-APACHE

staging/vhost-device-gpu/LICENSE-BSD-3-Clause

@@ -0,0 +1 @@
+../../LICENSE-BSD-3-Clause