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crosvm/third_party/vmm_vhost/README.md
Keiichi Watanabe 48643234da vmm_vhost: Delete vhost-kern and vhost-vsock 
Since we're using vmm_vhost only for vhost-user, we can delete
vmm_vhost's vhost-kern/vhost-vsock parts.
Note that we own vhost crate, which vmm_vhost was copied from.

BUG=b:206900656
TEST=cargo test --all-features in vmm_vhost

Change-Id: I622fbb856fb99fc2cb078d79f79491fa35ede8e3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3295217
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Keiichi Watanabe <keiichiw@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
2021-12-01 09:45:44 +00:00

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vHost

A pure rust library for vhost-user. This is a fork of rust-vmm/vhost.

vhost Architecture

The vhost-user protocol aims to implement vhost backend drivers in userspace, which complements the ioctl interface used to control the vhost implementation in the Linux kernel. It implements the control plane needed to establish virtqueue sharing with a user space process on the same host. It uses communication over a Unix domain socket to share file descriptors in the ancillary data of the message.

The protocol defines two sides of the communication, master and slave. Master is the application that shares its virtqueues, slave is the consumer of the virtqueues. Master and slave can be either a client (i.e. connecting) or server (listening) in the socket communication.