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Fri, 23 May 2025 16:03:40 +0000 (GMT) Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6174E58051; Fri, 23 May 2025 16:03:39 +0000 (GMT) Received: from MacBookPro.ibm.com (unknown [9.61.240.236]) by smtpav02.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 23 May 2025 16:03:39 +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=/N3U4t3LiiReJXxka GTq63I6YAr4N0FuMqvFbBhGAy0=; b=nqw19j8XphpsTrJsK/H9LlCE8JNiN/RDb 5nnoKspAsUTRJBJBoR3C8Oba7mG2yXQzd1xlPZYSEFLVEqlvpzel7zDzk7q/e9pv A4A7vr4H+Tq5qTKdg2XDw18/lT+ydVNkvmyz+TxTEWjsEiTBiLJc+GXOA2w3Y4pb c0md6MykOh3wObYn2SJGHyFw4saZsoBV2+vZ3cdKDq/PbCECRRwCkOyZh3Har82E yfEz7OxD+plVDlVRYt2TlGBG1Gr2nTHV7y3G2InWUPGyEWqtelOFKCJoeXc07/ex qsNMyvovNLlDN7RmuvQdDldGesnc2uJJYqVpI5Xgu3F6xkO4BpgVw== 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: [RFC PATCH v11 1/4] hw/vfio/ap: notification handler for AP config changed event Date: Fri, 23 May 2025 12:03:35 -0400 Message-ID: <20250523160338.41896-2-rreyes@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250523160338.41896-1-rreyes@linux.ibm.com> References: <20250523160338.41896-1-rreyes@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=SMZCVPvH c=1 sm=1 tr=0 ts=68309c5f cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=dt9VzEwgFbYA:10 a=sWKEhP36mHoA:10 a=VnNF1IyMAAAA:8 a=cI7fhctStQOMI3-b00QA:9 X-Proofpoint-GUID: tYYLf3LKP3MUQaY6bLDwyvPGbHIukN7v X-Proofpoint-ORIG-GUID: tYYLf3LKP3MUQaY6bLDwyvPGbHIukN7v X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTIzMDE0NSBTYWx0ZWRfXw+32zhX0/iyU R9VHYhNshafgf5cNiMC/6WjC3UQdRDte1Q+1GQQAHjJRc0599cKnGGX1qXH/JJBkPKboV7oCSIk VWc4pQUaCJDgJD5ABm2i3RR+cCGIA/jLSVN38oU4+uoPAKZrBvDpUkW/VO1B/m+gv2W4u+VRwk8 +0xsSTrPxk9IhNIQR83lUNYp3PC7+7cecv7vEaQFoiWYM1ghukwv2z1ey9BX/OiFmZpTdap3cdO +zMJ2T9OvV5L5N8GD9Xua4rDYnC1pU+BHF5iGpmVuQWsn/esOQt49PvSm7TMUfAmJTiRZSqoIHf 99ZSQDNPW5A6jzjn3n2V3oVHYmNSQLCQortQLBHzxRto9+Tn0eBCKuBVOG7I8F5ehI7wIJdxcx9 FT0ya+F7rDdKRrFWdhqUojU8inszMK0Z29IOCk39DIed/ZKoOyVixlToWIoD24Bv5pGQecoi 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=2025-05-23_05,2025-05-22_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 mlxlogscore=999 suspectscore=0 bulkscore=0 clxscore=1015 adultscore=0 phishscore=0 mlxscore=0 impostorscore=0 spamscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505160000 definitions=main-2505230145 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=148.163.158.5; envelope-from=rreyes@linux.ibm.com; helo=mx0b-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_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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: 1748016318481116600 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 785c0a0197..93c74ebedb 100644 --- a/hw/vfio/ap.c +++ b/hw/vfio/ap.c @@ -18,6 +18,7 @@ #include "hw/vfio/vfio-device.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; @@ -137,6 +155,9 @@ 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; @@ -176,6 +197,15 @@ 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: @@ -188,6 +218,7 @@ 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_device_detach(&vapdev->vdev); g_free(vapdev->vdev.name); } --=20 2.48.1 From nobody Sat Nov 15 17:44:05 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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Fri, 23 May 2025 16:03:40 +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=FoieamDphR6BVN3AY Knz1tn0I6TeyjhiF6BeTGsmbaM=; b=VxZjs3QnnCm1bc4whoEnS0lsKY2rwEgIX xhagU7CB3BOFUzp4OCrs4cnsOs+dpO7fmZMqcq5au9I+g/lxaDheqyEdR8axFh3h qFpziYufWxkIYVBX1ddapw9B/eeiHTjxkApOwh19GoDv1mJzJRJxuncUWIoTwczC /4zX0wQFTg5J/WDRv6JWmg7rcCwwCduLEKvBcmZFn/gIzK/FWMy+k6MRd9diNnWq CUNPDHUWEipd46uo6u6C4zaILWZg/2XovuCjJtipWuqAJz6m9OkmVpEe30A45rAe ZXXPlneXFyxG9Pe/uYofpJSoLGtdMEmooRwK8TIhRFz5tQSJkM4Rg== 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: [RFC PATCH v11 2/4] hw/vfio/ap: store object indicating AP config changed in a queue Date: Fri, 23 May 2025 12:03:36 -0400 Message-ID: <20250523160338.41896-3-rreyes@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250523160338.41896-1-rreyes@linux.ibm.com> References: <20250523160338.41896-1-rreyes@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: hNNheqgr2PENIihr-ertB-VIOeGY3k3r X-Authority-Analysis: v=2.4 cv=O6Y5vA9W c=1 sm=1 tr=0 ts=68309c5f cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=dt9VzEwgFbYA:10 a=VnNF1IyMAAAA:8 a=n_lu--N5RhutrOJcQFMA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTIzMDE0NSBTYWx0ZWRfXwW6BMtRVtKVo jGlQ1yWGS3QOsHDzgcnk+hBH6DhgvKQgUsDvCUKoeaCo4u0q/PcSEqeI3GmYEplI0xCEL+Ejf+N rnX1k76P9V3uA1eHSVjiljcWu8YErWTiX7+qpIHvEHfE7xp4UOcxIgcCgSYj6kmCNFdEMd/q0EX ajcO4vGdBqnqP7WyVl3Q+4ciHm5SUs0EjQxGT1VaQG0LdxWwy6mfsdws3eBULjlgGSTHM6Ev2Nn zdC8wUzNKCjBTCZnBAYU0oTgNqdGWNGz3UesmcnyYCD9qIZZI+9UEJxCdcwRh0GAVAa7N4NXwDR DREqkJYIES4fHlvHVBoVqMPfBh/49i7//ANO67DZveHp5z4peDAqUkdnIaLjHMBh/EfSSzEj7h9 GhAXrxuuCoc62D8zi/UK0r3sVIZGhFLW5JfCBEk3g1O+UlnSVCsfrhRJwLOyH6cwERL+SATS X-Proofpoint-ORIG-GUID: hNNheqgr2PENIihr-ertB-VIOeGY3k3r 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=2025-05-23_05,2025-05-22_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1015 suspectscore=0 adultscore=0 spamscore=0 mlxlogscore=999 phishscore=0 malwarescore=0 priorityscore=1501 mlxscore=0 lowpriorityscore=0 bulkscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505160000 definitions=main-2505230145 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_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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: 1748016320674116600 Content-Type: text/plain; charset="utf-8" Creates an object indicating that an AP configuration change event has been received and stores it in a queue. These objects will later be used to store event information for an AP configuration change when the CHSC instruction is intercepted. Signed-off-by: Rorie Reyes --- hw/vfio/ap.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c index 93c74ebedb..fc435f5c5b 100644 --- a/hw/vfio/ap.c +++ b/hw/vfio/ap.c @@ -41,6 +41,13 @@ struct VFIOAPDevice { EventNotifier cfg_notifier; }; =20 +typedef struct APConfigChgEvent { + QTAILQ_ENTRY(APConfigChgEvent) next; +} APConfigChgEvent; + +static QTAILQ_HEAD(, APConfigChgEvent) cfg_chg_events =3D + QTAILQ_HEAD_INITIALIZER(cfg_chg_events); + OBJECT_DECLARE_SIMPLE_TYPE(VFIOAPDevice, VFIO_AP_DEVICE) =20 static void vfio_ap_compute_needs_reset(VFIODevice *vdev) @@ -74,12 +81,17 @@ static void vfio_ap_req_notifier_handler(void *opaque) =20 static void vfio_ap_cfg_chg_notifier_handler(void *opaque) { + APConfigChgEvent *cfg_chg_event; VFIOAPDevice *vapdev =3D opaque; =20 if (!event_notifier_test_and_clear(&vapdev->cfg_notifier)) { return; } =20 + cfg_chg_event =3D g_new0(APConfigChgEvent, 1); + + QTAILQ_INSERT_TAIL(&cfg_chg_events, cfg_chg_event, next); + css_generate_css_crws(0); =20 } --=20 2.48.1 From nobody Sat Nov 15 17:44:05 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=reject dis=none) header.from=linux.ibm.com ARC-Seal: i=1; a=rsa-sha256; t=1748016299; cv=none; d=zohomail.com; s=zohoarc; b=UR0eydR5WGbN/z1CMuR0PJYEf0dLfsuwQMjwTxiMycz1pActx7hIVg/by0bVfWdkvCajQFOZQNoDgCVSsXSH6fVPPtsb5pdu4gdmEr6bJ52E4RH+kyWSauyfP7ujVedoUpUOwW/8wZaGlfW8cOagK10UtqZjkSGZSv9eE/5dthw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1748016299; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=flKSRWwIVyWcugu85KpsEwhisGiqLUH40eJIaMYTL0o=; 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Fri, 23 May 2025 16:03:42 GMT Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0A0455805C; Fri, 23 May 2025 16:03:42 +0000 (GMT) Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4404D58051; Fri, 23 May 2025 16:03:41 +0000 (GMT) Received: from MacBookPro.ibm.com (unknown [9.61.240.236]) by smtpav02.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 23 May 2025 16:03:41 +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=flKSRWwIVyWcugu85 KpsEwhisGiqLUH40eJIaMYTL0o=; b=EZ0w4zaleCYo79/HMUoRIpQsgUsqeNFrY wxrHgj8G0/I/aNdXf/nSYgVvBU3yzWwSMFtqdYKfs66JF0pmPRF47z/n7mWgiGi4 EhvZT1ZqOgoKDt5UxDWK5E2A9x87mbvl7xn90qsW/GOQWBcPN5TJPEQ/23zZQUH1 Q7qsQmO4nclvwyb69V2m1SRNIDdPmrnx9txNoAA0LKfs10ad21MK7j+Zxje5UWWE G2Ma8ojlUMVgSoc0J0ooOfXjXpfkNwf2y90gmWc8PGBuEqFvg9o5CfPirqI3eQai uiTI6aHo+xdUwiFhks4jHCBXgpK8WxMmP/zoBAuzTFckFV/cHqgog== 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: [RFC PATCH v11 3/4] hw/vfio/ap: Storing event information for an AP configuration change event Date: Fri, 23 May 2025 12:03:37 -0400 Message-ID: <20250523160338.41896-4-rreyes@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250523160338.41896-1-rreyes@linux.ibm.com> References: <20250523160338.41896-1-rreyes@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=SMZCVPvH c=1 sm=1 tr=0 ts=68309c60 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=dt9VzEwgFbYA:10 a=sWKEhP36mHoA:10 a=VnNF1IyMAAAA:8 a=cKQ_eDIM6AGRu3ddSD4A:9 X-Proofpoint-GUID: TqamCVwje5Td1HWFSN0f7vwFVVvQsBk2 X-Proofpoint-ORIG-GUID: TqamCVwje5Td1HWFSN0f7vwFVVvQsBk2 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTIzMDE0NSBTYWx0ZWRfXxPjfYrIxlYyc d31GcHv9g7UO8sXj+cjoY3Mc8cIHPHzjV6lNt3Pvw1mS0cJfhCnIj7QTVlucpL1SYJ4WSq2vsMK wVufhI2HB65sy3HJ8iM+PtKtkNQI4RPA78T5G5ryH/9mRX1azyJciNkr2Xdtj5HENCyZpB9ZSAz oIXLueAcUBbfqSvhAu1af8TtBbRPcHpNJRo5jBwHJKLknEDDNO/hioKEGpJV1iMXA88E+A9gLBL pq4/13rL7gsxnwnMHZmuhVj+ZNuk0mY/t6Y/E04lH2cElIZqeI6Jdmxw+kxw/wgA06WZWLolvBn cf1hDvf5VsdD+yfj8MHNVOrpM/UdyGF5vX7hjziN0dWk2SZg0EJguUkL22W/bZyUv8ojzCNVmBf NA6ep4C/mg4uDqOOdRCFWN8821MDbbzf1Rr2vyB4C4EqQizPWuTZzo/FojnVoKsHx8EeB/pm 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=2025-05-23_05,2025-05-22_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 mlxlogscore=999 suspectscore=0 bulkscore=0 clxscore=1015 adultscore=0 phishscore=0 mlxscore=0 impostorscore=0 spamscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505160000 definitions=main-2505230145 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=148.163.158.5; envelope-from=rreyes@linux.ibm.com; helo=mx0b-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_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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: 1748016300526116600 Content-Type: text/plain; charset="utf-8" These functions can be invoked by the function that handles interception of the CHSC SEI instruction for requests indicating the accessibility of one or more adjunct processors has changed. Signed-off-by: Rorie Reyes --- hw/vfio/ap.c | 53 ++++++++++++++++++++++++++++++++++++ include/hw/s390x/ap-bridge.h | 39 ++++++++++++++++++++++++++ 2 files changed, 92 insertions(+) diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c index fc435f5c5b..97a42a575a 100644 --- a/hw/vfio/ap.c +++ b/hw/vfio/ap.c @@ -10,6 +10,7 @@ * directory. */ =20 +#include #include "qemu/osdep.h" #include CONFIG_DEVICES /* CONFIG_IOMMUFD */ #include @@ -48,6 +49,8 @@ typedef struct APConfigChgEvent { static QTAILQ_HEAD(, APConfigChgEvent) cfg_chg_events =3D QTAILQ_HEAD_INITIALIZER(cfg_chg_events); =20 +static QemuMutex cfg_chg_events_lock; + OBJECT_DECLARE_SIMPLE_TYPE(VFIOAPDevice, VFIO_AP_DEVICE) =20 static void vfio_ap_compute_needs_reset(VFIODevice *vdev) @@ -96,6 +99,49 @@ static void vfio_ap_cfg_chg_notifier_handler(void *opaqu= e) =20 } =20 +int ap_chsc_sei_nt0_get_event(void *res) +{ + ChscSeiNt0Res *nt0_res =3D (ChscSeiNt0Res *)res; + APConfigChgEvent *cfg_chg_event; + + qemu_mutex_lock(&cfg_chg_events_lock); + + if (!ap_chsc_sei_nt0_have_event()) { + qemu_mutex_unlock(&cfg_chg_events_lock); + return EVENT_INFORMATION_NOT_STORED; + } + + cfg_chg_event =3D QTAILQ_FIRST(&cfg_chg_events); + QTAILQ_REMOVE(&cfg_chg_events, cfg_chg_event, next); + + qemu_mutex_unlock(&cfg_chg_events_lock); + + memset(nt0_res, 0, sizeof(*nt0_res)); + g_free(cfg_chg_event); + + /* + * If there are any AP configuration change events in the queue, + * indicate to the caller that there is pending event info in + * the response block + */ + if (ap_chsc_sei_nt0_have_event()) { + nt0_res->flags |=3D PENDING_EVENT_INFO_BITMASK; + } + + nt0_res->length =3D sizeof(ChscSeiNt0Res); + nt0_res->code =3D NT0_RES_RESPONSE_CODE; + nt0_res->nt =3D NT0_RES_NT_DEFAULT; + nt0_res->rs =3D NT0_RES_RS_AP_CHANGE; + nt0_res->cc =3D NT0_RES_CC_AP_CHANGE; + + return EVENT_INFORMATION_STORED; +} + +bool ap_chsc_sei_nt0_have_event(void) +{ + return !QTAILQ_EMPTY(&cfg_chg_events); +} + static bool vfio_ap_register_irq_notifier(VFIOAPDevice *vapdev, unsigned int irq, Error **errp) { @@ -192,6 +238,13 @@ static void vfio_ap_realize(DeviceState *dev, Error **= errp) VFIOAPDevice *vapdev =3D VFIO_AP_DEVICE(dev); VFIODevice *vbasedev =3D &vapdev->vdev; =20 + static bool lock_initialized; + + if (!lock_initialized) { + qemu_mutex_init(&cfg_chg_events_lock); + lock_initialized =3D true; + } + if (!vfio_device_get_name(vbasedev, errp)) { return; } diff --git a/include/hw/s390x/ap-bridge.h b/include/hw/s390x/ap-bridge.h index 470e439a98..7efc52928d 100644 --- a/include/hw/s390x/ap-bridge.h +++ b/include/hw/s390x/ap-bridge.h @@ -16,4 +16,43 @@ =20 void s390_init_ap(void); =20 +typedef struct ChscSeiNt0Res { + uint16_t length; + uint16_t code; + uint8_t reserved1; + uint16_t reserved2; + uint8_t nt; +#define PENDING_EVENT_INFO_BITMASK 0x80; + uint8_t flags; + uint8_t reserved3; + uint8_t rs; + uint8_t cc; +} QEMU_PACKED ChscSeiNt0Res; + +#define NT0_RES_RESPONSE_CODE 1 +#define NT0_RES_NT_DEFAULT 0 +#define NT0_RES_RS_AP_CHANGE 5 +#define NT0_RES_CC_AP_CHANGE 3 + +#define EVENT_INFORMATION_NOT_STORED 1 +#define EVENT_INFORMATION_STORED 0 + +/** + * ap_chsc_sei_nt0_get_event - Retrieve the next pending AP config + * change event + * @res: Pointer to a ChscSeiNt0Res struct to be filled with event + * data + * + * This function checks for any pending AP config change events and, + * if present, populates the provided response structure with the + * appropriate SEI NT0 fields. + * + * Return: + * EVENT_INFORMATION_STORED - An event was available and written to @res + * EVENT_INFORMATION_NOT_STORED - No event was available + */ +int ap_chsc_sei_nt0_get_event(void *res); 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.158.5; envelope-from=rreyes@linux.ibm.com; helo=mx0b-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_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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: 1748016259846116600 Handle interception of the CHSC SEI instruction for requests indicating the guest's AP configuration has changed. If configuring --without-default-devices, hw/s390x/ap-stub.c was created to handle such circumstance. Also added the following to hw/s390x/meson.build if CONFIG_VFIO_AP is false, it will use the stub file. Signed-off-by: Rorie Reyes Reviewed-by: Anthony Krowiak Reviewed-by: C=C3=A9dric Le Goater --- MAINTAINERS | 1 + hw/s390x/ap-stub.c | 21 +++++++++++++++++++++ hw/s390x/meson.build | 1 + target/s390x/ioinst.c | 11 +++++++++-- 4 files changed, 32 insertions(+), 2 deletions(-) create mode 100644 hw/s390x/ap-stub.c diff --git a/MAINTAINERS b/MAINTAINERS index 7060cf49b9..444523a35e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -112,6 +112,7 @@ F: hw/intc/s390_flic.c F: hw/intc/s390_flic_kvm.c F: hw/s390x/ F: hw/vfio/ap.c +F: hw/s390x/ap-stub.c F: hw/vfio/ccw.c F: hw/watchdog/wdt_diag288.c F: include/hw/s390x/ diff --git a/hw/s390x/ap-stub.c b/hw/s390x/ap-stub.c new file mode 100644 index 0000000000..001fe5f8b0 --- /dev/null +++ b/hw/s390x/ap-stub.c @@ -0,0 +1,21 @@ +/* + * VFIO based AP matrix device assignment + * + * Copyright 2025 IBM Corp. + * Author(s): Rorie Reyes + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "hw/s390x/ap-bridge.h" + +int ap_chsc_sei_nt0_get_event(void *res) +{ + return EVENT_INFORMATION_NOT_STORED; +} + +bool ap_chsc_sei_nt0_have_event(void) +{ + return false; +} diff --git a/hw/s390x/meson.build b/hw/s390x/meson.build index 3bbebfd817..99cbcbd7d6 100644 --- a/hw/s390x/meson.build +++ b/hw/s390x/meson.build @@ -33,6 +33,7 @@ s390x_ss.add(when: 'CONFIG_S390_CCW_VIRTIO', if_true: fil= es( )) s390x_ss.add(when: 'CONFIG_TERMINAL3270', if_true: files('3270-ccw.c')) s390x_ss.add(when: 'CONFIG_VFIO', if_true: files('s390-pci-vfio.c')) +s390x_ss.add(when: 'CONFIG_VFIO_AP', if_false: files('ap-stub.c')) =20 virtio_ss =3D ss.source_set() virtio_ss.add(files('virtio-ccw.c')) diff --git a/target/s390x/ioinst.c b/target/s390x/ioinst.c index fe62ba5b06..2320dd4c12 100644 --- a/target/s390x/ioinst.c +++ b/target/s390x/ioinst.c @@ -18,6 +18,7 @@ #include "trace.h" #include "hw/s390x/s390-pci-bus.h" #include "target/s390x/kvm/pv.h" +#include "hw/s390x/ap-bridge.h" =20 /* All I/O instructions but chsc use the s format */ static uint64_t get_address_from_regs(CPUS390XState *env, uint32_t ipb, @@ -574,13 +575,19 @@ out: =20 static int chsc_sei_nt0_get_event(void *res) { - /* no events yet */ + if (s390_has_feat(S390_FEAT_AP)) { + return ap_chsc_sei_nt0_get_event(res); + } + return 1; } =20 static int chsc_sei_nt0_have_event(void) { - /* no events yet */ + if (s390_has_feat(S390_FEAT_AP)) { + return ap_chsc_sei_nt0_have_event(); + } + return 0; } =20 --=20 2.48.1