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vhost-user: send log shm fd along with log_base

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Send the shm for the dirty pages logging if the backend supports
VHOST_USER_PROTOCOL_F_LOG_SHMFD. Wait for a reply to make sure
the old log is no longer used.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
This commit is contained in:
Marc-André Lureau 2015-10-09 17:17:26 +02:00 • committed by Michael S. Tsirkin
parent 15324404f6
commit 9a78a5dd27
4 changed files with 33 additions and 6 deletions
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4
include/hw/virtio/vhost-backend.h
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@ -21,6 +21,7 @@ typedef enum VhostBackendType {
} VhostBackendType;
struct vhost_dev;
struct vhost_log;
typedef int (*vhost_call)(struct vhost_dev *dev, unsigned long int request,
void *arg);
@ -30,7 +31,8 @@ typedef int (*vhost_backend_get_vq_index)(struct vhost_dev *dev, int idx);
typedef int (*vhost_backend_set_vring_enable)(struct vhost_dev *dev, int enable);
typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev);
typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base);
typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base,
struct vhost_log *log);
typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev);
typedef struct VhostOps {