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vhost: add support for configure interrupt

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Add functions to support configure interrupt.
The configure interrupt process will start in vhost_dev_start
and stop in vhost_dev_stop.

Also add the functions to support vhost_config_pending and
vhost_config_mask.

Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20221222070451.936503-8-lulu@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Cindy Lu 2022-12-22 15:04:48 +08:00 • committed by Michael S. Tsirkin
parent 7d847d0c9b
commit f9a09ca3ea
2 changed files with 81 additions and 1 deletions
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4
include/hw/virtio/vhost.h
View file

@ -33,6 +33,7 @@ struct vhost_virtqueue {
unsigned used_size;
EventNotifier masked_notifier;
EventNotifier error_notifier;
EventNotifier masked_config_notifier;
struct vhost_dev *dev;
};
@ -41,6 +42,7 @@ typedef unsigned long vhost_log_chunk_t;
#define VHOST_LOG_BITS (8 * sizeof(vhost_log_chunk_t))
#define VHOST_LOG_CHUNK (VHOST_LOG_PAGE * VHOST_LOG_BITS)
#define VHOST_INVALID_FEATURE_BIT (0xff)
#define VHOST_QUEUE_NUM_CONFIG_INR 0
struct vhost_log {
unsigned long long size;
@ -187,6 +189,8 @@ int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
* Disable direct notifications to vhost device.
*/
void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
bool vhost_config_pending(struct vhost_dev *hdev);
void vhost_config_mask(struct vhost_dev *hdev, VirtIODevice *vdev, bool mask);
/**
* vhost_dev_is_started() - report status of vhost device