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Merge pull request #128 from rust-vmm/dependabot/cargo/vhost-0.4.0
Viresh Kumar authored 
build(deps): bump vhost from 0.3.0 to 0.4.0
839bf921
Name Last commit Last update
.cargo Initial commit
.github dependabot: Allow updating dependencies
i2c Update vhost-user-backend
rng Update vhost-user-backend
rust-vmm-ci @ 99fe2eb2 build(deps): bump rust-vmm-ci from `ee6be8c` to `99fe2eb`
.gitignore Add .gitignore
.gitmodules Initial commit
CODEOWNERS fix CODEOWNERS file
Cargo.lock Update vhost-user-backend
Cargo.toml rng: Initial vhost-device RNG implementation
LICENSE-APACHE Initial commit
README.md rng: Initial vhost-device RNG implementation
coverage_config_x86_64.json rng: Add testing module for vhost-device RNG
README.md

vhost-device

Design

This repository hosts various 'vhost-user' device backends in their own crates. See their individual README.md files for specific information about those crates.

Here is the list of device backends that we support:

Testing and Code Coverage

Like the wider rust-vmm project we expect new features to come with comprehensive code coverage. However as a multi-binary repository there are cases where avoiding a drop in coverage can be hard and an exception to the approach is allowable. These are:

  • adding a new binary target (aim at least 60% overall coverage)
  • expanding the main function (a small drop is acceptable)

However any new feature added to an existing binary should not cause a drop in coverage. The general aim should be to always improve coverage.

Separation of Concerns

The binaries built by this repository can be run with any VMM which can act as a vhost-user master. Typically they have been tested with QEMU although the rust-vmm project does provide a vhost-user master crate for rust based VMMs.

While it's possible to implement all parts of the backend inside the vhost-device workspace consideration should be given to separating the VirtQueue handling and response logic to a crate in vm-virtio devices. This way a monolithic rust-vmm VMM implementation can reuse the core logic to service the virtio requests directly in the application.