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Tue, 4 Feb 2025 17:08:03 +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 Subject: [RFC PATCH v2 3/5] hw/vfio/ap: store object indicating AP config changed in a queue Date: Tue, 4 Feb 2025 12:07:57 -0500 Message-Id: <20250204170759.36540-4-rreyes@linux.ibm.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20250204170759.36540-1-rreyes@linux.ibm.com> References: <20250204170759.36540-1-rreyes@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: UTtmRB5gPAJ9b4uTj0LH5jotkorSxkJD X-Proofpoint-GUID: UTtmRB5gPAJ9b4uTj0LH5jotkorSxkJD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-02-04_08,2025-02-04_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 mlxlogscore=999 phishscore=0 clxscore=1015 adultscore=0 spamscore=0 mlxscore=0 malwarescore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2501170000 definitions=main-2502040131 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_H2=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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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 | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c index a2b3735349..396fcf87de 100644 --- a/hw/vfio/ap.c +++ b/hw/vfio/ap.c @@ -41,6 +41,13 @@ struct VFIOAPDevice { EventNotifier cfg_notifier; }; +typedef struct APConfigChgEvent { + QTAILQ_ENTRY(APConfigChgEvent) next; +} APConfigChgEvent; + +QTAILQ_HEAD(, APConfigChgEvent) cfg_chg_events = + QTAILQ_HEAD_INITIALIZER(cfg_chg_events); + OBJECT_DECLARE_SIMPLE_TYPE(VFIOAPDevice, VFIO_AP_DEVICE) static void vfio_ap_compute_needs_reset(VFIODevice *vdev) @@ -75,11 +82,16 @@ static void vfio_ap_req_notifier_handler(void *opaque) static void vfio_ap_cfg_chg_notifier_handler(void *opaque) { VFIOAPDevice *vapdev = opaque; + APConfigChgEvent *cfg_chg_event = g_new0(APConfigChgEvent, 1); if (!event_notifier_test_and_clear(&vapdev->cfg_notifier)) { - css_generate_css_crws(0); + return; } + QTAILQ_INSERT_TAIL(&cfg_chg_events, cfg_chg_event, next); + + css_generate_css_crws(0); + } static bool vfio_ap_register_irq_notifier(VFIOAPDevice *vapdev,