diff options
Diffstat (limited to 'drivers/s390/crypto/vfio_ap_ops.c')
| -rw-r--r-- | drivers/s390/crypto/vfio_ap_ops.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index 0b4cc8c597ae..8bf353d46820 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -1535,13 +1535,29 @@ static int vfio_ap_mdev_set_kvm(struct ap_matrix_mdev *matrix_mdev, return 0; } +static void unmap_iova(struct ap_matrix_mdev *matrix_mdev, u64 iova, u64 length) +{ + struct ap_queue_table *qtable = &matrix_mdev->qtable; + struct vfio_ap_queue *q; + int loop_cursor; + + hash_for_each(qtable->queues, loop_cursor, q, mdev_qnode) { + if (q->saved_iova >= iova && q->saved_iova < iova + length) + vfio_ap_irq_disable(q); + } +} + static void vfio_ap_mdev_dma_unmap(struct vfio_device *vdev, u64 iova, u64 length) { struct ap_matrix_mdev *matrix_mdev = container_of(vdev, struct ap_matrix_mdev, vdev); - vfio_unpin_pages(&matrix_mdev->vdev, iova, 1); + mutex_lock(&matrix_dev->mdevs_lock); + + unmap_iova(matrix_mdev, iova, length); + + mutex_unlock(&matrix_dev->mdevs_lock); } /** |