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| author | Laurent Vivier <lvivier@redhat.com> | 2025-01-15 14:50:43 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-01-15 13:07:32 -0500 |
| commit | 3f65357313e0f928e0bd3ff868b705855d0405bc (patch) | |
| tree | b501deaca44073c725a1bd6844846e167bb239e6 | |
| parent | 1ce979e7269a34d19ea1a65808df014d8b2acbf6 (diff) | |
| download | qemu-3f65357313e0f928e0bd3ff868b705855d0405bc.zip qemu-3f65357313e0f928e0bd3ff868b705855d0405bc.tar.gz qemu-3f65357313e0f928e0bd3ff868b705855d0405bc.tar.bz2 | |
vhost: Add stubs for the migration state transfer interface
Migration state transfer interface is only used by vhost-user-fs,
so the interface needs to be defined only when vhost is built.
But I need to use this interface with virtio-net and vhost is not always
enabled, and to avoid undefined reference error during build, define stub
functions for vhost_supports_device_state(), vhost_save_backend_state() and
vhost_load_backend_state().
Cc: Hanna Czenczek <hreitz@redhat.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20250115135044.799698-2-lvivier@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | include/hw/virtio/vhost.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index 461c168..a9469d5 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -365,7 +365,14 @@ static inline int vhost_reset_device(struct vhost_dev *hdev) * Returns true if the device supports these commands, and false if it * does not. */ +#ifdef CONFIG_VHOST bool vhost_supports_device_state(struct vhost_dev *dev); +#else +static inline bool vhost_supports_device_state(struct vhost_dev *dev) +{ + return false; +} +#endif /** * vhost_set_device_state_fd(): Begin transfer of internal state from/to @@ -448,7 +455,15 @@ int vhost_check_device_state(struct vhost_dev *dev, Error **errp); * * Returns 0 on success, and -errno otherwise. */ +#ifdef CONFIG_VHOST int vhost_save_backend_state(struct vhost_dev *dev, QEMUFile *f, Error **errp); +#else +static inline int vhost_save_backend_state(struct vhost_dev *dev, QEMUFile *f, + Error **errp) +{ + return -ENOSYS; +} +#endif /** * vhost_load_backend_state(): High-level function to load a vhost @@ -465,6 +480,14 @@ int vhost_save_backend_state(struct vhost_dev *dev, QEMUFile *f, Error **errp); * * Returns 0 on success, and -errno otherwise. */ +#ifdef CONFIG_VHOST int vhost_load_backend_state(struct vhost_dev *dev, QEMUFile *f, Error **errp); +#else +static inline int vhost_load_backend_state(struct vhost_dev *dev, QEMUFile *f, + Error **errp) +{ + return -ENOSYS; +} +#endif #endif |