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Fri, 25 Apr 2025 05:24:07 GMT Received: from smtprelay03.wdc07v.mail.ibm.com ([172.16.1.70]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 466jfxkr0h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Apr 2025 05:24:07 +0000 Received: from smtpav02.dal12v.mail.ibm.com (smtpav02.dal12v.mail.ibm.com [10.241.53.101]) by smtprelay03.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 53P5O3kx31654548 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 25 Apr 2025 05:24:03 GMT Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 752D05805A; Fri, 25 Apr 2025 05:24:05 +0000 (GMT) Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B230A58060; Fri, 25 Apr 2025 05:24:04 +0000 (GMT) Received: from localhost.localdomain (unknown [9.61.253.76]) by smtpav02.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 25 Apr 2025 05:24:04 +0000 (GMT) From: Rorie Reyes To: qemu-devel@nongnu.org, qemu-s390x@nongnu.org Cc: pbonzini@redhat.com, cohuck@redhat.com, pasic@linux.ibm.com, jjherne@linux.ibm.com, borntraeger@linux.ibm.com, alex.williamson@redhat.com, clg@redhat.com, thuth@redhat.com, akrowiak@linux.ibm.com, rreyes@linux.ibm.com Subject: [PATCH v7 3/6] hw/vfio/ap: notification handler for AP config changed event Date: Fri, 25 Apr 2025 01:23:58 -0400 Message-ID: <20250425052401.8287-4-rreyes@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250425052401.8287-1-rreyes@linux.ibm.com> References: <20250425052401.8287-1-rreyes@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNDI1MDAzNSBTYWx0ZWRfX9KKi91DS7bEd obAGdnfoGeqAcXvb43Z8RMdh5XfHpWOwC8wHZ+zlxkrBHj7C5bbg2oHF6INzWMdsI2wEnvXo+GS mR/HFwGvKCB/AgC/qOtfbi35BYJauCyO23XZg2cpUYpDnVGLTiyDfH575h7pUi5yiI9nI8h49vL U6D2c4F+nbjBkFqARQh2UG5oSsfvH43dxYYTmgEd8/xR6dlaFtHjPRV13FxbLHyYGF9il3ykhfr SvWtULUz0LlHl+j417FyWo8HbEFJXo4s7JSDRsES36lEZyZwujDHE9veJctghHWo+DCjyKEH3k8 1ilf58jqxC8wLnQYTFYigjh8Mv+mPufqyUeFofH+fSQANxJJIQr0TN1h0uZ8gfe4DTwQVUbvqkE e5aWqd3VctxtCQrv22ApkwRyhf0pBQh8/M89sZrAtvMSzL6arUKSsGb7sdFQJssa3h94uvlw X-Proofpoint-ORIG-GUID: iTiqNH6o30kitbGLkejD9JTi9yR0v3oa X-Proofpoint-GUID: iTiqNH6o30kitbGLkejD9JTi9yR0v3oa X-Authority-Analysis: v=2.4 cv=HoF2G1TS c=1 sm=1 tr=0 ts=680b1c78 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=XR8D0OoHHMoA:10 a=sWKEhP36mHoA:10 a=VnNF1IyMAAAA:8 a=cI7fhctStQOMI3-b00QA:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-04-25_01,2025-04-24_02,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 lowpriorityscore=0 phishscore=0 clxscore=1015 impostorscore=0 adultscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 mlxscore=0 spamscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2504250035 Received-SPF: pass client-ip=148.163.156.1; envelope-from=rreyes@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Register an event notifier handler to process AP configuration change events by queuing the event and generating a CRW to let the guest know its AP configuration has changed Signed-off-by: Rorie Reyes Reviewed-by: Anthony Krowiak --- hw/vfio/ap.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c index d6575d7c44..fcb07ef486 100644 --- a/hw/vfio/ap.c +++ b/hw/vfio/ap.c @@ -18,6 +18,7 @@ #include "hw/vfio/vfio-common.h" #include "system/iommufd.h" #include "hw/s390x/ap-device.h" +#include "hw/s390x/css.h" #include "qemu/error-report.h" #include "qemu/event_notifier.h" #include "qemu/main-loop.h" @@ -37,6 +38,7 @@ struct VFIOAPDevice { APDevice apdev; VFIODevice vdev; EventNotifier req_notifier; + EventNotifier cfg_notifier; }; OBJECT_DECLARE_SIMPLE_TYPE(VFIOAPDevice, VFIO_AP_DEVICE) @@ -70,6 +72,18 @@ static void vfio_ap_req_notifier_handler(void *opaque) } } +static void vfio_ap_cfg_chg_notifier_handler(void *opaque) +{ + VFIOAPDevice *vapdev = opaque; + + if (!event_notifier_test_and_clear(&vapdev->cfg_notifier)) { + return; + } + + css_generate_css_crws(0); + +} + static bool vfio_ap_register_irq_notifier(VFIOAPDevice *vapdev, unsigned int irq, Error **errp) { @@ -85,6 +99,10 @@ static bool vfio_ap_register_irq_notifier(VFIOAPDevice *vapdev, notifier = &vapdev->req_notifier; fd_read = vfio_ap_req_notifier_handler; break; + case VFIO_AP_CFG_CHG_IRQ_INDEX: + notifier = &vapdev->cfg_notifier; + fd_read = vfio_ap_cfg_chg_notifier_handler; + break; default: error_setg(errp, "vfio: Unsupported device irq(%d)", irq); return false; @@ -136,6 +154,9 @@ static void vfio_ap_unregister_irq_notifier(VFIOAPDevice *vapdev, case VFIO_AP_REQ_IRQ_INDEX: notifier = &vapdev->req_notifier; break; + case VFIO_AP_CFG_CHG_IRQ_INDEX: + notifier = &vapdev->cfg_notifier; + break; default: error_report("vfio: Unsupported device irq(%d)", irq); return; @@ -175,6 +196,15 @@ static void vfio_ap_realize(DeviceState *dev, Error **errp) warn_report_err(err); } + if (!vfio_ap_register_irq_notifier(vapdev, VFIO_AP_CFG_CHG_IRQ_INDEX, &err)) + { + /* + * Report this error, but do not make it a failing condition. + * Lack of this IRQ in the host does not prevent normal operation. + */ + warn_report_err(err); + } + return; error: @@ -187,6 +217,7 @@ static void vfio_ap_unrealize(DeviceState *dev) VFIOAPDevice *vapdev = VFIO_AP_DEVICE(dev); vfio_ap_unregister_irq_notifier(vapdev, VFIO_AP_REQ_IRQ_INDEX); + vfio_ap_unregister_irq_notifier(vapdev, VFIO_AP_CFG_CHG_IRQ_INDEX); vfio_detach_device(&vapdev->vdev); g_free(vapdev->vdev.name); } -- 2.48.1