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| author | Michael S. Tsirkin <mst@redhat.com> | 2014-12-01 15:50:29 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-12-09 12:06:32 +0200 |
| commit | df1b57fe59bc5b1486fe142e6ee76c493c52c543 (patch) | |
| tree | 413edac9309ff5fe4d38c964177bc104061c8e0c | |
| parent | 1f0f9106f92c7d49ec92baa6ac757aa8b0590eff (diff) | |
| download | lwn-df1b57fe59bc5b1486fe142e6ee76c493c52c543.tar.gz lwn-df1b57fe59bc5b1486fe142e6ee76c493c52c543.zip | |
virtio_balloon: add legacy_only flag
We have no plans to support virtio 1.0 in balloon driver. Add an
explicit flag to mark it legacy only.
This will be used by follow-up patches.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | drivers/virtio/virtio_balloon.c | 1 | ||||
| -rw-r--r-- | include/linux/virtio.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index c9703d4d6f67..4497def48dae 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -518,6 +518,7 @@ static unsigned int features[] = { }; static struct virtio_driver virtio_balloon_driver = { + .legacy_only = true, .feature_table = features, .feature_table_size = ARRAY_SIZE(features), .driver.name = KBUILD_MODNAME, diff --git a/include/linux/virtio.h b/include/linux/virtio.h index f70411eb9d27..2bbf62697671 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -132,6 +132,7 @@ int virtio_device_restore(struct virtio_device *dev); * @feature_table_size: number of entries in the feature table array. * @feature_table_legacy: same as feature_table but when working in legacy mode. * @feature_table_size_legacy: number of entries in feature table legacy array. + * @legacy_only: driver does not support virtio 1.0. * @probe: the function to call when a device is found. Returns 0 or -errno. * @remove: the function to call when a device is removed. * @config_changed: optional function to call when the device configuration @@ -144,6 +145,7 @@ struct virtio_driver { unsigned int feature_table_size; const unsigned int *feature_table_legacy; unsigned int feature_table_size_legacy; + bool legacy_only; int (*probe)(struct virtio_device *dev); void (*scan)(struct virtio_device *dev); void (*remove)(struct virtio_device *dev); |