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Thu, 5 May 2022 10:16:21 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C4F714C040; Thu, 5 May 2022 10:16:21 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BF8824C046; Thu, 5 May 2022 10:16:20 +0000 (GMT) Received: from [9.171.71.237] (unknown [9.171.71.237]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 5 May 2022 10:16:20 +0000 (GMT) Message-ID: Date: Thu, 5 May 2022 12:16:20 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH v6 11/21] KVM: s390: pci: do initial setup for AEN interpretation Content-Language: en-US To: Matthew Rosato , linux-s390@vger.kernel.org Cc: alex.williamson@redhat.com, cohuck@redhat.com, schnelle@linux.ibm.com, farman@linux.ibm.com, pmorel@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com, svens@linux.ibm.com, frankja@linux.ibm.com, david@redhat.com, imbrenda@linux.ibm.com, vneethv@linux.ibm.com, oberpar@linux.ibm.com, freude@linux.ibm.com, thuth@redhat.com, pasic@linux.ibm.com, pbonzini@redhat.com, corbet@lwn.net, jgg@nvidia.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org References: <20220426200842.98655-1-mjrosato@linux.ibm.com> <20220426200842.98655-12-mjrosato@linux.ibm.com> From: Christian Borntraeger In-Reply-To: <20220426200842.98655-12-mjrosato@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 57De0f8BErD5dXeOxosoubLHqjQQEktq X-Proofpoint-ORIG-GUID: wvYuKOXpGw49XJWt7jGThtvR75Dr9pXc X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-05_04,2022-05-05_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 phishscore=0 malwarescore=0 clxscore=1011 priorityscore=1501 suspectscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2205050071 X-Spam-Status: No, score=-3.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 26.04.22 um 22:08 schrieb Matthew Rosato: [...] > +/* Caller must hold the aift lock before calling this function */ When you do a next round, maybe use lockdep_assert_help instead of this comment > +void kvm_s390_pci_aen_exit(void) > +{ > + unsigned long flags; > + struct kvm_zdev **gait_kzdev; > + > + /* > + * Contents of the aipb remain registered for the life of the host > + * kernel, the information preserved in zpci_aipb and zpci_aif_sbv > + * in case we insert the KVM module again later. Clear the AIFT > + * information and free anything not registered with underlying > + * firmware. > + */ > + spin_lock_irqsave(&aift->gait_lock, flags); > + gait_kzdev = aift->kzdev; > + aift->gait = 0; > + aift->sbv = 0; > + aift->kzdev = 0; > + spin_unlock_irqrestore(&aift->gait_lock, flags); > + > + kfree(gait_kzdev); > +} > + Otherwise, Reviewed-by: Christian Borntraeger