From patchwork Tue Jan 7 18:43:49 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rorie Reyes X-Patchwork-Id: 13929607 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1336BE77197 for ; Tue, 7 Jan 2025 21:01:05 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tVGgJ-0008RU-JJ; Tue, 07 Jan 2025 16:00:07 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tVEYh-0004Un-NS; Tue, 07 Jan 2025 13:44:07 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tVEYe-0002u6-8H; Tue, 07 Jan 2025 13:44:07 -0500 Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 507I4BBr012018; Tue, 7 Jan 2025 18:43:58 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:message-id:mime-version :subject:to; s=pp1; bh=o0SvNewd65nIG4kEVE1az9PSPP5S0ooYLfuYy0oqk 1I=; b=G4wS7F+Ty1dB2ubOO8gYhCM39xRVJgF5qCtKLGIEyD+TJMtvXXwpSFSd8 /UY/Mpru+fS0ZQavseNv+QnHgE7PQoDO9+lWilv+OAd1GdPIuPyJU0xuONviHBWa NIclv7z6RhHEF3NDaDeLgrD0PFGjSJZ0RBnwQvZF4EkDP75COPxGvfpXdCdL2jXD X0DB6DT23xc+hpawxMI6/YaRIPMZ1cRnoaHZs8LgbkJyj8/ClhRzs59MsewcGnf/ Dl14YMBh0LFRj1BB3UJLA5r/HJHELaz1aVHBS6VXmTWr/vpk1kObB+YuduDRHMzN wDzCMaGT3kjXMyTr2r728t/yGyQUg== Received: from ppma22.wdc07v.mail.ibm.com (5c.69.3da9.ip4.static.sl-reverse.com [169.61.105.92]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 440vrcbydv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Jan 2025 18:43:58 +0000 (GMT) Received: from pps.filterd (ppma22.wdc07v.mail.ibm.com [127.0.0.1]) by ppma22.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 507G0thA008851; Tue, 7 Jan 2025 18:43:57 GMT Received: from smtprelay01.wdc07v.mail.ibm.com ([172.16.1.68]) by ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 43yfpyv2hj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Jan 2025 18:43:57 +0000 Received: from smtpav01.dal12v.mail.ibm.com (smtpav01.dal12v.mail.ibm.com [10.241.53.100]) by smtprelay01.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 507Ihtsq21430906 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 7 Jan 2025 18:43:56 GMT Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A37ED5805D; Tue, 7 Jan 2025 18:43:55 +0000 (GMT) Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0F60658058; Tue, 7 Jan 2025 18:43:55 +0000 (GMT) Received: from localhost.localdomain (unknown [9.12.78.174]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 7 Jan 2025 18:43:54 +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: [PATCH v1 0/5] Report vfio-ap configuration changes Date: Tue, 7 Jan 2025 13:43:49 -0500 Message-Id: <20250107184354.91079-1-rreyes@linux.ibm.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: pI2llqLiUs-n9Vt9kgcglez-T1O2mbbX X-Proofpoint-ORIG-GUID: pI2llqLiUs-n9Vt9kgcglez-T1O2mbbX X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=853 spamscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 clxscore=1011 mlxscore=0 priorityscore=1501 suspectscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2501070153 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_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-Mailman-Approved-At: Tue, 07 Jan 2025 16:00:06 -0500 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 This patch series creates and registers a handler that is called when userspace is notified by the kernel that a guest's AP configuration has changed. The handler in turn notifies the guest that its AP configuration has changed. This allows the guest to immediately respond to AP configuration changes rather than relying on polling or some other inefficient mechanism for detecting config changes. Rorie Reyes (5): linux-headers: NOTFORMERGE - placeholder uapi updates for AP config change hw/vfio/ap: notification handler for AP config changed event hw/vfio/ap: store object indicating AP config changed in a queue hw/vfio/ap: Storing event information for an AP configuration change event s390: implementing CHSC SEI for AP config change hw/vfio/ap.c | 74 ++++++++++++++++++++++++++++++++++++ include/hw/s390x/ap-bridge.h | 17 +++++++++ linux-headers/linux/vfio.h | 1 + target/s390x/ioinst.c | 11 +++++- 4 files changed, 101 insertions(+), 2 deletions(-)