Setting the vring's avail.idx can be useful for low-level VIRTIO tests,
especially for testing error scenarios with invalid vrings. Extract it
into a new function so that the next commit can add a test that uses
this new test API.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20250922220149.498967-5-stefanha@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Stefan Hajnoczi
e06d96d5a9