Rob Bradford ef91fc64e5 virtio-devices: vhost_user: Trigger interrupts in guest on resume ...

Trigger the interrupts in the guest for the virtio device queues behind
the vhost-user devices when resuming. This avoids a situation where
interrupts from the backend get lost when they are dispatched from the
backend when then guest is paused leading to the guest/backend
effectively waiting for each other to move forward. This is more
reproducible with longer durations between pause and resume as there is
more opportunity for the backend to completely process it's queue and
fire all the interrupts.

It's perfectly safe and allowed by the virtio spec to generate these
interrupts and the performance impact is negligible and is a safe way to
ensure forward progress after a resume.

See: #7850

Signed-off-by: Rob Bradford <rbradford@meta.com>

2026-03-17 08:44:39 +00:00

..

src

virtio-devices: vhost_user: Trigger interrupts in guest on resume

2026-03-17 08:44:39 +00:00

build.rs

build: Add "fuzzing" as a valid cfg(..) attribute

2024-05-08 08:10:28 +00:00

Cargo.toml

misc: make MSRV workspace-wide for cloud-hypervisor dependencies

2026-03-13 01:30:25 +00:00