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Mon, 27 Jul 2026 17:32:41 +0000 (GMT) Received: from li-4c4c4544-004d-4810-8043-b7c04f423534.ibm.com.com (unknown [9.61.182.213]) by smtpav02.wdc07v.mail.ibm.com (Postfix) with ESMTP; Mon, 27 Jul 2026 17:32:41 +0000 (GMT) From: Anthony Krowiak To: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: jjherne@linux.ibm.com, borntraeger@de.ibm.com, mjrosato@linux.ibm.com, pasic@linux.ibm.com, alex@shazbot.org, kwankhede@nvidia.com, fiuczy@linux.ibm.com, pbonzini@redhat.com, frankja@linux.ibm.com, imbrenda@linux.ibm.com, agordeev@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com Subject: [PATCH v6 01/15] s390/vfio-ap: Provide function to get the number of queues assigned to mdev Date: Mon, 27 Jul 2026 13:32:25 -0400 Message-ID: <20260727173239.2420754-2-akrowiak@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260727173239.2420754-1-akrowiak@linux.ibm.com> References: <20260727173239.2420754-1-akrowiak@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 85aW8N2AyDHCbXAJYlCGnZN61zIgzP-G X-Proofpoint-ORIG-GUID: 85aW8N2AyDHCbXAJYlCGnZN61zIgzP-G X-Proofpoint-Spam-Info: AW1haW4tMjYwNzI3MDE2MCBTYWx0ZWRfX0fGuZaFoQbmB ewuz2vnXg2jApPFVvNp9B47owgosTSqOYHmMazwasE96GUeGSBTMv+8xZHs2HvHJuLNHfsF/t7b KeQfA8sEL3RfEYMgkU/4E7PRWSQw714= X-Authority-Analysis: v=2.4 cv=dYuwG3Xe c=1 sm=1 tr=0 ts=6a67963e cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=yQsB-kB7boqL7geEApIA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzI3MDE2MCBTYWx0ZWRfXzKFd9S8ACRRc oM0sze9zMQi3DpObAhF7VGpxBGQ9wyrQbMg4HEZ0sZ79FB51UyJuaFS1gjwXd9Q2TpJTmtMODtY iV7QwK5IS7q07yOHo3cssKJ6dgZYD+PJ1c3tGXgehV6PGTqf8MWGDrFXSR/uCvbsrSw/ZqcUVMc T3DDjZXTEcQEoNrC5RomfSwZGk6r6090xfYxbuNqQPMzds32vsTJz3iw3K4MXn+8ZrLTi4NXD4+ 8EYvavTwmSJtA+B3qm/qIChVFsTjEv5oa2NpfTphYLPK7WWwsvQqxZIa/NQqNjCYAr3MJeNa5o0 5JSvB9/2Zcsuk6/zVTuoUWnYpceuKjS+A6qHJY9z3c/K5f3VjW4UFJ/k9T7CFzGtYXQIfwfLl4y /m0muYOAw/bprOUxtCTJH8MosjZ+uVKipg8Ao5Nh1jvKPRGKXPaIf/Guuf6gQwdYPdJ37i+7RcO Lt3VEuisAmDyhGGIk1Q== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-27_04,2026-07-24_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 clxscore=1015 phishscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 bulkscore=0 suspectscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607270160 Provides a function that returns the number of queues that are or will be passed through to a guest when the mdev is attached to a guest. Signed-off-by: Anthony Krowiak --- drivers/s390/crypto/vfio_ap_ops.c | 8 ++++++++ drivers/s390/crypto/vfio_ap_private.h | 2 ++ 2 files changed, 10 insertions(+) diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index 44b3a1dcc1b3..36786d70a88f 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -2098,6 +2098,14 @@ static void vfio_ap_mdev_request(struct vfio_device *vdev, unsigned int count) release_update_locks_for_mdev(matrix_mdev); } +int vfio_ap_mdev_get_num_queues(struct ap_matrix *ap_matrix) +{ + lockdep_assert_held(&matrix_dev->mdevs_lock); + + return bitmap_weight(ap_matrix->apm, AP_DEVICES) * + bitmap_weight(ap_matrix->aqm, AP_DOMAINS); +} + static int vfio_ap_mdev_get_device_info(unsigned long arg) { unsigned long minsz; diff --git a/drivers/s390/crypto/vfio_ap_private.h b/drivers/s390/crypto/vfio_ap_private.h index 9bff666b0b35..9677e49554d7 100644 --- a/drivers/s390/crypto/vfio_ap_private.h +++ b/drivers/s390/crypto/vfio_ap_private.h @@ -152,6 +152,8 @@ struct vfio_ap_queue { struct work_struct reset_work; }; +int vfio_ap_mdev_get_num_queues(struct ap_matrix *ap_matrix); + int vfio_ap_mdev_register(void); void vfio_ap_mdev_unregister(void); -- 2.53.0