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Wed, 23 Apr 2025 21:45:11 +0000 (GMT) Received: from smtpav05.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DF21D58043; Wed, 23 Apr 2025 21:45:09 +0000 (GMT) Received: from localhost.localdomain (unknown [9.61.253.34]) by smtpav05.wdc07v.mail.ibm.com (Postfix) with ESMTP; Wed, 23 Apr 2025 21:45:09 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=DbGe6NBfmik512jP0 vpRGSQqkwwS4t6t23BBrq4fQ2Q=; b=oV4+i4TU3E81LmE/W85PGKXpMGzGml3pg a9XDLZAdMHTlGIb9mo4hjUV/oW6xGeLFtxeL/kIVD2k9T9WH9xq5OlKstkE7MXOM wRipKySQT4Xy7V4ChcWuX1bDsmAeCMNE2ISw5rveHxPJr9+lA5aHaG1+MP7qo4un WVUhXCyFAzLBbieIhZsKVuq7//oL+QJcwF8q9UPi37rwfWWiI2Il5J5XJzTpOwdq Z9Xvk2lBJl3S2K8ZGxldut4TcjcC/hAbMZYEu5iKeQBvRaAaBrAQ+q5LoviowuiG AePr2euknhJfxyb2Z7OZAJ8MDZeQGCjeR0eY0JQqaXJT99QiHi5wQ== 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 v6 2/7] hw/vfio/ap: notification handler for AP config changed event Date: Wed, 23 Apr 2025 17:45:01 -0400 Message-ID: <20250423214506.72728-3-rreyes@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250423214506.72728-1-rreyes@linux.ibm.com> References: <20250423214506.72728-1-rreyes@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNDIzMDE0NSBTYWx0ZWRfX2TYd6lp6DE/o 29te0bDqx6UTUGsibqXe/TmQyTo3ypHNr88eCS5Wzb6mrJNLLanoDJ7rk8kWtlRzRcOn3ruX7ft vketsxVmowegjq1sehBOl8HQEaVxZcc3lmo51VFUbWQXOORhNs4N8QVYiCUtnwgi2GaJgiU+Erw DWwF8yDTUzD9G+oZ/kMA8/fa6plsRutokRskiAIs71xDpLaS0gj5ZvmwkEPpGHRJhUaCqv+8kIA PCIlyskyiV/kIVCh+btCnpAgFBiun2Z0k5gp/YfGW8Ziv3LhjjX0qaz72XF4SdCf91dMVVcnB4Q L076/whYHIUKr/bs5EP0timA8qox1OXYJZfTRVi1qMgWELzkKkKh0H4IwikN5ZFey+G4Bu4YO+3 THGMNKTrkccKJRI4vqVIqgHDCQPmvsUnaC64/4hC8lwVW4k2lWhixOroNP/AkUo4njQil+bI X-Proofpoint-GUID: 11ROFERTAZlrI-HE8vZ4U0GBiCuf_a6W X-Proofpoint-ORIG-GUID: 11ROFERTAZlrI-HE8vZ4U0GBiCuf_a6W X-Authority-Analysis: v=2.4 cv=CcMI5Krl c=1 sm=1 tr=0 ts=68095f69 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==: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:6.0.680,FMLib:17.12.80.40 definitions=2025-04-23_12,2025-04-22_01,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 malwarescore=0 clxscore=1015 mlxlogscore=999 adultscore=0 priorityscore=1501 mlxscore=0 suspectscore=0 bulkscore=0 spamscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2504230145 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1745444777255019100 Content-Type: text/plain; charset="utf-8" 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 c7ab4ff57a..3614657218 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; }; =20 OBJECT_DECLARE_SIMPLE_TYPE(VFIOAPDevice, VFIO_AP_DEVICE) @@ -70,6 +72,18 @@ static void vfio_ap_req_notifier_handler(void *opaque) } } =20 +static void vfio_ap_cfg_chg_notifier_handler(void *opaque) +{ + VFIOAPDevice *vapdev =3D 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 =3D &vapdev->req_notifier; fd_read =3D vfio_ap_req_notifier_handler; break; + case VFIO_AP_CFG_CHG_IRQ_INDEX: + notifier =3D &vapdev->cfg_notifier; + fd_read =3D 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(VFIOAPDevic= e *vapdev, case VFIO_AP_REQ_IRQ_INDEX: notifier =3D &vapdev->req_notifier; break; + case VFIO_AP_CFG_CHG_IRQ_INDEX: + notifier =3D &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); } =20 + 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; =20 error: @@ -187,6 +217,7 @@ static void vfio_ap_unrealize(DeviceState *dev) VFIOAPDevice *vapdev =3D VFIO_AP_DEVICE(dev); =20 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); } --=20 2.48.1