From 0f56ff85e38a3925ba8c63af9fcf6a0708f0d10f Mon Sep 17 00:00:00 2001 From: Julia Suvorova Date: Tue, 4 Feb 2020 18:20:05 +0000 Subject: [PATCH 4/6] virtio: add ability to delete vq through a pointer RH-Author: Julia Suvorova Message-id: <20200204182007.183537-3-jusual@redhat.com> Patchwork-id: 93705 O-Subject: [RHEL-8.2.0 qemu-kvm PATCH 2/4] virtio: add ability to delete vq through a pointer Bugzilla: 1708480 RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Cornelia Huck RH-Acked-by: Michael S. Tsirkin From: "Michael S. Tsirkin" Devices tend to maintain vq pointers, allow deleting them trough a vq pointer. Signed-off-by: Michael S. Tsirkin Reviewed-by: David Hildenbrand Reviewed-by: David Hildenbrand (cherry picked from commit 722f8c51d8af223751dfb1d02de40043e8ba067e) Signed-off-by: Danilo C. L. de Paula --- hw/virtio/virtio.c | 13 +++++++++---- include/hw/virtio/virtio.h | 2 ++ 2 files changed, 11 insertions(+), 4 deletions(-) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 6356bf3..624f6e2 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1601,16 +1601,21 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, return &vdev->vq[i]; } +void virtio_delete_queue(VirtQueue *vq) +{ + vq->vring.num = 0; + vq->vring.num_default = 0; + vq->handle_output = NULL; + vq->handle_aio_output = NULL; +} + void virtio_del_queue(VirtIODevice *vdev, int n) { if (n < 0 || n >= VIRTIO_QUEUE_MAX) { abort(); } - vdev->vq[n].vring.num = 0; - vdev->vq[n].vring.num_default = 0; - vdev->vq[n].handle_output = NULL; - vdev->vq[n].handle_aio_output = NULL; + virtio_delete_queue(&vdev->vq[n]); } static void virtio_set_isr(VirtIODevice *vdev, int value) diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 9c1fa07..90471a1 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -163,6 +163,8 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, void virtio_del_queue(VirtIODevice *vdev, int n); +void virtio_delete_queue(VirtQueue *vq); + void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem, unsigned int len); void virtqueue_flush(VirtQueue *vq, unsigned int count); -- 1.8.3.1