linux-next/drivers/vhost
Mike Christie 34cf9ba5f0 vhost: Use virtqueue mutex for swapping worker
__vhost_vq_attach_worker uses the vhost_dev mutex to serialize the
swapping of a virtqueue's worker. This was done for simplicity because
we are already holding that mutex.

In the next patches where the worker can be killed while in use, we need
finer grained locking because some drivers will hold the vhost_dev mutex
while flushing. However in the SIGKILL handler in the next patches, we
will need to be able to swap workers (set current one to NULL), kill
queued works and stop new flushes while flushes are in progress.

To prepare us, this has us use the virtqueue mutex for swapping workers
instead of the vhost_dev one.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20240316004707.45557-7-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-05-22 08:31:15 -04:00
..
iotlb.c vhost_iotlb: split out IOTLB initialization 2022-05-31 12:44:28 -04:00
Kconfig vhost_task: Allow vhost layer to use copy_process 2023-03-23 12:45:36 +01:00
Makefile vhost: introduce vDPA-based backend 2020-04-02 10:41:40 -04:00
net.c virtio: features, fixes 2024-03-19 08:57:39 -07:00
scsi.c vhost_scsi: Handle vhost_vq_work_queue failures for TMFs 2024-05-22 08:31:15 -04:00
test.c vhost-test: remove meaningless debug info 2023-02-20 19:26:58 -05:00
test.h tools/virtio: Add --reset 2020-06-22 12:34:21 -04:00
vdpa.c vDPA: introduce get_vq_size to vdpa_config_ops 2024-03-19 02:45:50 -04:00
vhost.c vhost: Use virtqueue mutex for swapping worker 2024-05-22 08:31:15 -04:00
vhost.h vhost: Remove vhost_vq_flush 2024-05-22 08:31:15 -04:00
vringh.c vringh: don't use vringh_kiov_advance() in vringh_iov_xfer() 2023-10-04 08:26:48 +01:00
vsock.c virtio/vsock: send credit update during setting SO_RCVLOWAT 2023-12-15 10:37:35 +00:00