diff options
| -rw-r--r-- | drivers/net/virtio_net.c | 7 | ||||
| -rw-r--r-- | drivers/vhost/net.c | 9 | ||||
| -rw-r--r-- | drivers/virtio/virtio_input.c | 4 | ||||
| -rw-r--r-- | drivers/virtio/virtio_pci_legacy_dev.c | 4 | ||||
| -rw-r--r-- | drivers/virtio/virtio_pci_modern_dev.c | 4 | ||||
| -rw-r--r-- | include/linux/virtio_config.h | 2 | ||||
| -rw-r--r-- | include/uapi/linux/vhost.h | 4 |
7 files changed, 21 insertions, 13 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index d14e6d602273..975bdc5dab84 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -5758,14 +5758,15 @@ static void virtnet_freeze_down(struct virtio_device *vdev) disable_rx_mode_work(vi); flush_work(&vi->rx_mode_work); - netif_tx_lock_bh(vi->dev); - netif_device_detach(vi->dev); - netif_tx_unlock_bh(vi->dev); if (netif_running(vi->dev)) { rtnl_lock(); virtnet_close(vi->dev); rtnl_unlock(); } + + netif_tx_lock_bh(vi->dev); + netif_device_detach(vi->dev); + netif_tx_unlock_bh(vi->dev); } static int init_vqs(struct virtnet_info *vi); diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 6edac0c1ba9b..c6508fe0d5c8 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -99,6 +99,7 @@ struct vhost_net_ubuf_ref { atomic_t refcount; wait_queue_head_t wait; struct vhost_virtqueue *vq; + struct rcu_head rcu; }; #define VHOST_NET_BATCH 64 @@ -250,9 +251,13 @@ vhost_net_ubuf_alloc(struct vhost_virtqueue *vq, bool zcopy) static int vhost_net_ubuf_put(struct vhost_net_ubuf_ref *ubufs) { - int r = atomic_sub_return(1, &ubufs->refcount); + int r; + + rcu_read_lock(); + r = atomic_sub_return(1, &ubufs->refcount); if (unlikely(!r)) wake_up(&ubufs->wait); + rcu_read_unlock(); return r; } @@ -265,7 +270,7 @@ static void vhost_net_ubuf_put_and_wait(struct vhost_net_ubuf_ref *ubufs) static void vhost_net_ubuf_put_wait_and_free(struct vhost_net_ubuf_ref *ubufs) { vhost_net_ubuf_put_and_wait(ubufs); - kfree(ubufs); + kfree_rcu(ubufs, rcu); } static void vhost_net_clear_ubuf_info(struct vhost_net *n) diff --git a/drivers/virtio/virtio_input.c b/drivers/virtio/virtio_input.c index a5d63269f20b..d0728285b6ce 100644 --- a/drivers/virtio/virtio_input.c +++ b/drivers/virtio/virtio_input.c @@ -360,11 +360,15 @@ static int virtinput_freeze(struct virtio_device *vdev) { struct virtio_input *vi = vdev->priv; unsigned long flags; + void *buf; spin_lock_irqsave(&vi->lock, flags); vi->ready = false; spin_unlock_irqrestore(&vi->lock, flags); + virtio_reset_device(vdev); + while ((buf = virtqueue_detach_unused_buf(vi->sts)) != NULL) + kfree(buf); vdev->config->del_vqs(vdev); return 0; } diff --git a/drivers/virtio/virtio_pci_legacy_dev.c b/drivers/virtio/virtio_pci_legacy_dev.c index 677d1f68bc9b..bbbf89c22880 100644 --- a/drivers/virtio/virtio_pci_legacy_dev.c +++ b/drivers/virtio/virtio_pci_legacy_dev.c @@ -140,9 +140,9 @@ EXPORT_SYMBOL_GPL(vp_legacy_set_status); * vp_legacy_queue_vector - set the MSIX vector for a specific virtqueue * @ldev: the legacy virtio-pci device * @index: queue index - * @vector: the config vector + * @vector: the queue vector * - * Returns the config vector read from the device + * Returns the queue vector read from the device */ u16 vp_legacy_queue_vector(struct virtio_pci_legacy_device *ldev, u16 index, u16 vector) diff --git a/drivers/virtio/virtio_pci_modern_dev.c b/drivers/virtio/virtio_pci_modern_dev.c index d665f8f73ea8..9e503b7a58d8 100644 --- a/drivers/virtio/virtio_pci_modern_dev.c +++ b/drivers/virtio/virtio_pci_modern_dev.c @@ -546,9 +546,9 @@ EXPORT_SYMBOL_GPL(vp_modern_set_queue_reset); * vp_modern_queue_vector - set the MSIX vector for a specific virtqueue * @mdev: the modern virtio-pci device * @index: queue index - * @vector: the config vector + * @vector: the queue vector * - * Returns the config vector read from the device + * Returns the queue vector read from the device */ u16 vp_modern_queue_vector(struct virtio_pci_modern_device *mdev, u16 index, u16 vector) diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 918cf25cd3c6..8bf156dde554 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -328,8 +328,6 @@ static inline bool virtio_get_shm_region(struct virtio_device *vdev, struct virtio_shm_region *region, u8 id) { - if (!region->len) - return false; if (!vdev->config->get_shm_region) return false; return vdev->config->get_shm_region(vdev, region, id); diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h index 283348b64af9..c57674a6aa0d 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -260,7 +260,7 @@ * When fork_owner is set to VHOST_FORK_OWNER_KTHREAD: * - Vhost will create vhost workers as kernel threads. */ -#define VHOST_SET_FORK_FROM_OWNER _IOW(VHOST_VIRTIO, 0x83, __u8) +#define VHOST_SET_FORK_FROM_OWNER _IOW(VHOST_VIRTIO, 0x84, __u8) /** * VHOST_GET_FORK_OWNER - Get the current fork_owner flag for the vhost device. @@ -268,6 +268,6 @@ * * @return: An 8-bit value indicating the current thread mode. */ -#define VHOST_GET_FORK_FROM_OWNER _IOR(VHOST_VIRTIO, 0x84, __u8) +#define VHOST_GET_FORK_FROM_OWNER _IOR(VHOST_VIRTIO, 0x85, __u8) #endif |