From nobody Sun Feb 8 15:29:04 2026 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D98DE12E75; Tue, 26 Mar 2024 16:47:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711471636; cv=none; b=N+of6ba/xDf7EpTyyiRvTmOPdTJbtjShBG9fKwn4k7hb7l0OuT93imJxyGEBMdxhqrrjjlu4oQ0gKzatKWsTDqxtcOGWareIqj9+nSJYHcSqGl9uAxCFoQPYz3veyKo38R2DKk829BBIzCSTkqT6HuHog2CWfh6yCnTE9sEcj1k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711471636; c=relaxed/simple; bh=tSlXTR1QKZXk2pfdOpSseZfCaKNekp47ZScfnD+Fa2U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rXNVPLBTkSRcWiCNSCqhCUkifX/GNpkzeqIkKklyIjV6W8eVRh1icPYABReiqHl4hutZcDvJMugzApEnqUiHpH+yQBxX2AJP/JwzXlKGE97PmmAyXUsJsf44V8XNU+Vmpz3GItCkLbBxw0PePNvrZanhH/I9KEModDnCj75ftYc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=QDHNkpBZ; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="QDHNkpBZ" Received: from pps.filterd (m0360072.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 42QGdFVR026384; Tue, 26 Mar 2024 16:47:13 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=Qpf3+bKZA3IFFAh2Zgq/tCvKv4L+adz2xvIinaCNjGg=; b=QDHNkpBZzoDQrLz0s3c7hmUhGuCUz6roiXGSnjyiiPonNBrQ5yOpU8ra/uM8BuMzkFED UnzG/cwVMaRFQHQVrfRkBWCnjBLFUjMN2gUuzwyOQ+ywRRh869IMPW2fWndR+A7I+360 rrUgDPL016BOvjWRqjvV3BxpmOhheZjXlMcODA3SSeci+4QvVWXZcFSY596401/XRQ1V aChScIQvwdKH8/5uXf0OcwiipSdcct0ZF2nJ6nRs64uWaJQXoCz2ZjceRl3VLeEUBWFr GrTTES+YO+Z0/2KYujR3LgZuEB2rlmavfwEtNpFGQygssFoVERXSyQ2fN0K6+tYA1EdV 2Q== Received: from ppma21.wdc07v.mail.ibm.com (5b.69.3da9.ip4.static.sl-reverse.com [169.61.105.91]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3x4224r0sk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 26 Mar 2024 16:47:13 +0000 Received: from pps.filterd (ppma21.wdc07v.mail.ibm.com [127.0.0.1]) by ppma21.wdc07v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 42QFrBkH028675; Tue, 26 Mar 2024 16:47:12 GMT Received: from smtprelay02.wdc07v.mail.ibm.com ([172.16.1.69]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3x2adp8was-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 26 Mar 2024 16:47:12 +0000 Received: from smtpav01.dal12v.mail.ibm.com (smtpav01.dal12v.mail.ibm.com [10.241.53.100]) by smtprelay02.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 42QGl97Y26149580 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 26 Mar 2024 16:47:11 GMT Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8BCD55805D; Tue, 26 Mar 2024 16:47:09 +0000 (GMT) Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E8A6558057; Tue, 26 Mar 2024 16:47:08 +0000 (GMT) Received: from jason-laptop.home.arpa (unknown [9.61.173.44]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 26 Mar 2024 16:47:08 +0000 (GMT) From: "Jason J. Herne" To: linux-s390@vger.kernel.org Cc: linux-kernel@vger.kernel.org, pasic@linux.ibm.com, akrowiak@linux.ibm.com, borntraeger@de.ibm.com, agordeev@linux.ibm.com, gor@linux.ibm.com, hca@linux.ibm.com Subject: [PATCH v4 3/5] s390/vfio-ap: Ignore duplicate link requests in vfio_ap_mdev_link_queue Date: Tue, 26 Mar 2024 12:47:04 -0400 Message-ID: <20240326164706.29167-4-jjherne@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240326164706.29167-1-jjherne@linux.ibm.com> References: <20240326164706.29167-1-jjherne@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: WgL9AiRxulnS5l87ACelRY5eP8ujM1yY X-Proofpoint-ORIG-GUID: WgL9AiRxulnS5l87ACelRY5eP8ujM1yY X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-26_06,2024-03-21_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 impostorscore=0 lowpriorityscore=0 clxscore=1015 mlxlogscore=999 priorityscore=1501 bulkscore=0 suspectscore=0 adultscore=0 phishscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2403210000 definitions=main-2403260119 Content-Type: text/plain; charset="utf-8" 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 Reviewed-by: Tony Krowiak --- 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_a= p_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 *mde= v) static void vfio_ap_mdev_link_queue(struct ap_matrix_mdev *matrix_mdev, struct vfio_ap_queue *q) { - if (q) { - q->matrix_mdev =3D 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 =3D matrix_mdev; + hash_add(matrix_mdev->qtable.queues, &q->mdev_qnode, q->apqn); } =20 static void vfio_ap_mdev_link_apqn(struct ap_matrix_mdev *matrix_mdev, int= apqn) --=20 2.41.0