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Mon, 12 May 2025 18:02:34 +0000 (GMT) Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BB23758063; Mon, 12 May 2025 18:02:33 +0000 (GMT) Received: from localhost.localdomain (unknown [9.61.251.19]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Mon, 12 May 2025 18:02:33 +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=z+c0x+nvW4bJcM4OY exbji+5LoZMUs+4i9c/Z7KPEFo=; b=b11RSZ8hEUXugYqoM5wbG9QeBBhIzBi9w 4lO9YdnGYHnZEF2WY+HKkQCVYAc+aQTezGllJCOaCRcmTKlX5TqIy/1XrjNPNjLH VWOBE8Y4eIkB2oEpss7CeVd679zabAV+Hj1dWwpTlwswrWjYFU+bGxc7eeTj/frM HwhzS3s9lPRVCvB9BIM2zNCm62Tu0MN6Cg+8tRCLP1ooSEJvgsoG4r4IvRwCVu3a K7oEQxagliAVsyzfUwGtZTv+A261ZK8YfyK+sAAUHSvH0in3m+7aVHda6/QNSkYc h2HQqoauhLSr+2XCq+IsRHB1J6+HU6fik1QqRTWVObbvfQEV7GsJg== 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 v9 3/4] hw/vfio/ap: Storing event information for an AP configuration change event Date: Mon, 12 May 2025 14:02:29 -0400 Message-ID: <20250512180230.50129-4-rreyes@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250512180230.50129-1-rreyes@linux.ibm.com> References: <20250512180230.50129-1-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=OOUn3TaB c=1 sm=1 tr=0 ts=682237bd cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=dt9VzEwgFbYA:10 a=sWKEhP36mHoA:10 a=VnNF1IyMAAAA:8 a=1fYsFTRr82c5d5Av3T0A:9 X-Proofpoint-ORIG-GUID: 1FtW1VmTtcrFEJX6Q0EB8tsBnNHAhbzi X-Proofpoint-GUID: 1FtW1VmTtcrFEJX6Q0EB8tsBnNHAhbzi X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTEyMDE4MSBTYWx0ZWRfXyFqAIC2kUyju 75vtZZeh3tZSt65cHIXtUptmMtec+cNgaXPPyKFeqYJL9QySmrxu8wtW6iwyedXaIK8Lr/919cz m7Q6lrYrDJxUEiDaeT/IrTFDAqFLMjqL5cfHpVPCrY9jU58mnaCGjJJO/n8rP25j2FX5hQsgev+ qZoxHJBziKnj3xiLpIS+xMBEmTJYoasnFx4aDxTYIeiQOys0QDGTqqfb8VexMMHqijf+C0Vx6TT P7Qu0sV4t0SmtQtI7RtohW/dIOF5s2pJg07E7KvpfrjYArI5DyTzUlKQKgPXKh8cb+Mz+gy649f 76Goe1SUqF9bpCSIZlcRhctCan1nP2Eh3yqFIbBWSo2FhD0KwCG1pJv3hRsrwaIm3VyaMQ7v+/H QK5VUK5gpJ3OlpIG957qzqhE8bvLUFq0DXirSfZPw4sOSk0Y3xC38Wd0Ga857T+aDdmt4dCa 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=2025-05-12_06,2025-05-09_01,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 suspectscore=0 spamscore=0 lowpriorityscore=0 impostorscore=0 clxscore=1015 bulkscore=0 malwarescore=0 adultscore=0 mlxscore=0 mlxlogscore=999 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2505120181 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_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: 1747073017266116600 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 Reviewed-by: Anthony Krowiak --- 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 5ea5dd9cca..4f88f80c54 100644 --- a/hw/vfio/ap.c +++ b/hw/vfio/ap.c @@ -96,6 +96,45 @@ 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; + + if (!ap_chsc_sei_nt0_have_event()) { + return 1; + } + + cfg_chg_event =3D 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 |=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 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 @@ =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; + +int ap_chsc_sei_nt0_get_event(void *res); + +int ap_chsc_sei_nt0_have_event(void); + #endif --=20 2.48.1