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Wed, 11 Nov 2026 19:23:10 +0000 (GMT) Received: from li-4c4c4544-004d-4810-8043-b7c04f423534.ibm.com.com (unknown [9.61.182.62]) by smtpav05.dal12v.mail.ibm.com (Postfix) with ESMTP; Wed, 11 Nov 2026 19:23:10 +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 v13 01/14] s390/vfio-ap: Provide function to get the number of queues assigned to mdev Date: Wed, 11 Nov 2026 14:22:55 -0500 Message-ID: <20261111192308.2585984-2-akrowiak@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261111192308.2585984-1-akrowiak@linux.ibm.com> References: <20261111192308.2585984-1-akrowiak@linux.ibm.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=POqaavqC c=1 sm=1 tr=0 ts=6af4c0a2 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=zJRp6_cAMcgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=yQsB-kB7boqL7geEApIA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTExMDA3NiBTYWx0ZWRfX5XpHExEsr5C3 G0OLIKz9gjLXlzZHz3TsOKZb1u+uwKRkNouCT/SY1AIw3u5D0O5PIXbsV+frpakqiD8RCqacyO+ usr8J+LMwPdmaa5DHLcmO2amf/JZjO1K9YU+rNOUu/QjM4HNgjCXrqvbrMGdm72BTld8dWsABp3 b6sWUBMpLi9LigcWBzFDdrzFqRsqXGFz+hlUrzhk4TjRG7sOhjAkhczm3xYkTxPIJ2ee0U72gGn wlhubodd5BIUREqxiz22PutvtpgXX/3zvqX0P8Z6H11EHEQmZLDLhMI6kUzYRqw3EJS3BZI2F7t xDluerCI3Ccdgoxa8s5U4EGME2paOP6SUXt3KHQGLXcdDxcJKo7lPKBQno5krWXq9/h6Nw5aTBe uWYJJW27Z1mR/w4pF5UZ0J8uDfG6R5nzWLzwbyqYR24c+JLBGjhCkQw8Cawr36Yr/6cVQPHHSdy +jWXJFlT0lqivBQFQUA== X-Proofpoint-Spam-Info: AW1haW4tMjYxMTExMDA3NiBTYWx0ZWRfX7f4EjvUOQw8j +/guf2j6xbaaZXSLZ/sWVhopZefJmesVEm3maop7vr68IR3hEQZtT75WtmDvhNyWXGjxmw0qO+T WVHSmUrzh27m5RiNhAN0nrJdlgzEZkA= X-Proofpoint-ORIG-GUID: Wizml0ARuq5qWR-CxFYj_iOXQBLmIzxC X-Proofpoint-GUID: Wizml0ARuq5qWR-CxFYj_iOXQBLmIzxC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-11_05,2026-11-11_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 bulkscore=0 impostorscore=0 malwarescore=0 phishscore=0 lowpriorityscore=0 suspectscore=0 adultscore=0 spamscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611110076 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 Reviewed-by: Jason J. Herne --- 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 373ce574c431..83ba4193bdc3 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -2113,6 +2113,14 @@ static void vfio_ap_mdev_request(struct vfio_device *vdev, unsigned int count) release_update_locks_for_mdev(matrix_mdev); } +unsigned 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..12d7d240addd 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; }; +unsigned 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