diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/crypto/vfio_ap_ops.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index 561e68f69955..8346ad4f1942 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -1787,9 +1787,11 @@ int vfio_ap_mdev_probe_queue(struct ap_device *apdev) if (matrix_mdev) { vfio_ap_mdev_link_queue(matrix_mdev, q); - vfio_ap_mdev_filter_matrix(matrix_mdev->matrix.apm, - matrix_mdev->matrix.aqm, - matrix_mdev); + + if (vfio_ap_mdev_filter_matrix(matrix_mdev->matrix.apm, + matrix_mdev->matrix.aqm, + matrix_mdev)) + vfio_ap_mdev_update_guest_apcb(matrix_mdev); } dev_set_drvdata(&apdev->device, q); release_update_locks_for_mdev(matrix_mdev); @@ -1799,7 +1801,7 @@ int vfio_ap_mdev_probe_queue(struct ap_device *apdev) void vfio_ap_mdev_remove_queue(struct ap_device *apdev) { - unsigned long apid; + unsigned long apid, apqi; struct vfio_ap_queue *q; struct ap_matrix_mdev *matrix_mdev; @@ -1812,8 +1814,17 @@ void vfio_ap_mdev_remove_queue(struct ap_device *apdev) vfio_ap_unlink_queue_fr_mdev(q); apid = AP_QID_CARD(q->apqn); - if (test_bit_inv(apid, q->matrix_mdev->shadow_apcb.apm)) - clear_bit_inv(apid, q->matrix_mdev->shadow_apcb.apm); + apqi = AP_QID_QUEUE(q->apqn); + + /* + * If the queue is assigned to the guest's APCB, then remove + * the adapter's APID from the APCB and hot it into the guest. + */ + if (test_bit_inv(apid, matrix_mdev->shadow_apcb.apm) && + test_bit_inv(apqi, matrix_mdev->shadow_apcb.aqm)) { + clear_bit_inv(apid, matrix_mdev->shadow_apcb.apm); + vfio_ap_mdev_update_guest_apcb(matrix_mdev); + } } vfio_ap_mdev_reset_queue(q, 1); |