kernel/linux.git/drivers/virtio/virtio.c, branch v4.14.217

virtio: release virtio index when fail to device_register

2017-12-14T08:52:48+00:00

commit e60ea67bb60459b95a50a156296041a13e0e380e upstream. index can be reused by other virtio device. Signed-off-by: weiping zhang Reviewed-by: Cornelia Huck Signed-off-by: Michael S. Tsirkin Signed-off-by: Greg Kroah-Hartman

virtio: allow drivers to validate features

2017-04-07T13:38:59+00:00

Some drivers can't support all features in all configurations. At the moment we blindly set FEATURES_OK and later FAILED. Support this better by adding a callback drivers can use to do some early checks. Signed-off-by: Michael S. Tsirkin

virtio_net: refactor freeze/restore logic into virtnet reset logic

2017-02-07T15:05:12+00:00

For XDP we will need to reset the queues to allow for buffer headroom to be configured. In order to do this we need to essentially run the freeze()/restore() code path. Unfortunately the locking requirements between the freeze/restore and reset paths are different however so we can not simply reuse the code. This patch refactors the code path and adds a reset helper routine. Signed-off-by: John Fastabend Acked-by: Jason Wang Signed-off-by: David S. Miller

virtio: fix memory leak of virtio ida cache layers

2015-12-07T15:28:01+00:00

The virtio core uses a static ida named virtio_index_ida for assigning index numbers to virtio devices during registration. The ida core may allocate some internal idr cache layers and an ida bitmap upon any ida allocation, and all these layers are truely freed only upon the ida destruction. The virtio_index_ida is not destroyed at present, leading to a memory leak when using the virtio core as a module and atleast one virtio device is registered and unregistered. Fix this by invoking ida_destroy() in the virtio core module exit. Cc: stable@vger.kernel.org Signed-off-by: Suman Anna Signed-off-by: Michael S. Tsirkin

virtio: drop virtio_device_is_legacy_only

2015-04-15T03:11:14+00:00

virtio_device_is_legacy_only is now unused, drop it from core. Signed-off-by: Michael S. Tsirkin Reviewed-by: Cornelia Huck Signed-off-by: Rusty Russell

virtio: balloon might not be a legacy device

2015-04-15T03:11:11+00:00

We added transitional device support to balloon driver, so we don't need to black-list it in core anymore. Signed-off-by: Michael S. Tsirkin Reviewed-by: Cornelia Huck Signed-off-by: Rusty Russell

virtio: don't set VIRTIO_CONFIG_S_DRIVER_OK twice.

2015-02-17T05:49:29+00:00

I noticed this with the console device. It's not *wrong*, just a bit weird. Signed-off-by: Rusty Russell

virtio: set VIRTIO_CONFIG_S_FEATURES_OK on restore

2014-12-11T18:04:38+00:00

virtio 1.0 devices require that drivers set VIRTIO_CONFIG_S_FEATURES_OK after finalizing features. virtio core missed doing this on restore, fix it up. Signed-off-by: Michael S. Tsirkin Reviewed-by: Cornelia Huck

virtio: drop legacy_only driver flag

2014-12-09T19:42:00+00:00

legacy_only flag is now unused, drop it from core. Signed-off-by: Michael S. Tsirkin Acked-by: Cornelia Huck

virtio: allow finalize_features to fail

2014-12-09T14:32:32+00:00

This will make it easy for transports to validate features and return failure. Signed-off-by: Michael S. Tsirkin