Messages in this thread Patch in this message | | | From | "Jason J. Herne" <> | Subject | [PATCH v3 3/5] s390/vfio-ap: Ignore duplicate link requests in vfio_ap_mdev_link_queue | Date | Wed, 13 Mar 2024 16:58:05 -0400 |
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vfio_ap_mdev_link_queue is changed to detect if a matrix_mdev has already linked the given queue. If so, it bails out.
Signed-off-by: Jason J. Herne <jjherne@linux.ibm.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> --- drivers/s390/crypto/vfio_ap_ops.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index e01f53a3c5b7..1499c2181122 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -794,10 +794,11 @@ static int vfio_ap_mdev_probe(struct mdev_device *mdev) static void vfio_ap_mdev_link_queue(struct ap_matrix_mdev *matrix_mdev, struct vfio_ap_queue *q) { - if (q) { - q->matrix_mdev = matrix_mdev; - hash_add(matrix_mdev->qtable.queues, &q->mdev_qnode, q->apqn); - } + if (!q || vfio_ap_mdev_get_queue(matrix_mdev, q->apqn)) + return; + + q->matrix_mdev = matrix_mdev; + hash_add(matrix_mdev->qtable.queues, &q->mdev_qnode, q->apqn); } static void vfio_ap_mdev_link_apqn(struct ap_matrix_mdev *matrix_mdev, int apqn) -- 2.41.0
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