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Fri, 25 Apr 2025 05:24:08 GMT Received: from smtprelay04.dal12v.mail.ibm.com ([172.16.1.6]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 466jfxkr0m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Apr 2025 05:24:08 +0000 Received: from smtpav02.dal12v.mail.ibm.com (smtpav02.dal12v.mail.ibm.com [10.241.53.101]) by smtprelay04.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 53P5O7qS25952938 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 25 Apr 2025 05:24:07 GMT Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 410975805A; Fri, 25 Apr 2025 05:24:07 +0000 (GMT) Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 749C758051; Fri, 25 Apr 2025 05:24:06 +0000 (GMT) Received: from localhost.localdomain (unknown [9.61.253.76]) by smtpav02.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 25 Apr 2025 05:24:06 +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 5/6] hw/vfio/ap: Storing event information for an AP configuration change event Date: Fri, 25 Apr 2025 01:24:00 -0400 Message-ID: <20250425052401.8287-6-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: AW1haW4tMjUwNDI1MDAzNSBTYWx0ZWRfX4iW8yX7jklRP 6ZalB5eslnbadubBwNXtFnEgr4sajxpYhmYQ81jcDQ6NiqTYmXjUSgTUO82gszzcKuAgRfo/y8N S37ryjSaLhP/l8mL6Q0cUukj5bfjcXAnvG28132HhEa8486AvenD55UqHgfpAl517GwMJ6F4Ae8 y3RLAhLmx2hzSBU81iWP37LqL8+7w1HzWqYkfzmCxiZlsdudixZYS2+aDz7Rvcu/0bNBH0txUII mIqheIB3q0Xz9BifhWmrcQUj925qLMkKTky0e4tODyyVS9txu+wsX8s1aWw0lCZzU6rWq+eb8nN Hdwf9JzS29gqHlCus9xaUw0kz9CmYDwuYsjRHM877yZlx7FGXklsMfsftAY2gnC9ouBgwHUQpjA uJoiLsaWqivOG7ohkdrrLYrWy3K6Rn9o5u0d9e4k1eASiHu51KCly7WKElLQPdBq+qVzD+41 X-Proofpoint-GUID: 4hNiLArtpqY8LbmvXguvF75CYrO04kfz X-Authority-Analysis: v=2.4 cv=IciHWXqa c=1 sm=1 tr=0 ts=680b1c79 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=XR8D0OoHHMoA:10 a=sWKEhP36mHoA:10 a=VnNF1IyMAAAA:8 a=5Tnt1MKFKjqkw37VLmgA:9 X-Proofpoint-ORIG-GUID: 4hNiLArtpqY8LbmvXguvF75CYrO04kfz 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 lowpriorityscore=0 malwarescore=0 adultscore=0 mlxlogscore=999 mlxscore=0 impostorscore=0 phishscore=0 bulkscore=0 clxscore=1015 spamscore=0 priorityscore=1501 suspectscore=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=148.163.158.5; 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_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 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 | 39 ++++++++++++++++++++++++++++++++++++ include/hw/s390x/ap-bridge.h | 22 ++++++++++++++++++++ 2 files changed, 61 insertions(+) diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c index 3e94d6ffce..3a013764b9 100644 --- a/hw/vfio/ap.c +++ b/hw/vfio/ap.c @@ -96,6 +96,45 @@ static void vfio_ap_cfg_chg_notifier_handler(void *opaque) } +int ap_chsc_sei_nt0_get_event(void *res) +{ + ChscSeiNt0Res *nt0_res = (ChscSeiNt0Res *)res; + APConfigChgEvent *cfg_chg_event; + + if (!ap_chsc_sei_nt0_have_event()) { + return 1; + } + + cfg_chg_event = QTAILQ_FIRST(&cfg_chg_events); + memset(nt0_res, 0, sizeof(*nt0_res)); + + QTAILQ_REMOVE(&cfg_chg_events, cfg_chg_event, next); + 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 |= PENDING_EVENT_INFO_BITMASK; + } + + nt0_res->length = sizeof(ChscSeiNt0Res); + nt0_res->code = NT0_RES_RESPONSE_CODE; + nt0_res->nt = NT0_RES_NT_DEFAULT; + nt0_res->rs = NT0_RES_RS_AP_CHANGE; + nt0_res->cc = NT0_RES_CC_AP_CHANGE; + + return 0; + +} + +int 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) { diff --git a/include/hw/s390x/ap-bridge.h b/include/hw/s390x/ap-bridge.h index 470e439a98..f4d838bf99 100644 --- a/include/hw/s390x/ap-bridge.h +++ b/include/hw/s390x/ap-bridge.h @@ -16,4 +16,26 @@ void s390_init_ap(void); +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; + +int ap_chsc_sei_nt0_get_event(void *res); + +int ap_chsc_sei_nt0_have_event(void); + #endif -- 2.48.1