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Tue, 23 Aug 2022 11:54:42 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3846F42041; Tue, 23 Aug 2022 11:54:22 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C17A64203F; Tue, 23 Aug 2022 11:54:21 +0000 (GMT) Received: from oc-nschnelle.boeblingen.de.ibm.com (unknown [9.155.199.46]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 23 Aug 2022 11:54:21 +0000 (GMT) Message-ID: <62420273c48f2edecf12ec8784ef03adadea2a4b.camel@linux.ibm.com> Subject: Re: [PATCH v2] KVM: s390: pci: Hook to access KVM lowlevel from VFIO From: Niklas Schnelle To: Janosch Frank , Pierre Morel , mjrosato@linux.ibm.com Cc: rdunlap@infradead.org, linux-kernel@vger.kernel.org, lkp@intel.com, borntraeger@linux.ibm.com, farman@linux.ibm.com, linux-s390@vger.kernel.org, kvm@vger.kernel.org, gor@linux.ibm.com, hca@linux.ibm.com, alex.williamson@redhat.com, cohuck@redhat.com Date: Tue, 23 Aug 2022 13:54:21 +0200 In-Reply-To: <6d11d3b5-a313-8e2b-2f38-44c5a4a63a28@linux.ibm.com> References: <20220819122945.9309-1-pmorel@linux.ibm.com> <6d11d3b5-a313-8e2b-2f38-44c5a4a63a28@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5 (3.28.5-18.el8) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: ayEz9EVTrAievka9n9TQSWhAN9zWq_-K X-Proofpoint-ORIG-GUID: Z8IzRk8T2i07unRaT4MaxrE8cgm63uop X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-23_04,2022-08-22_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 suspectscore=0 spamscore=0 malwarescore=0 adultscore=0 impostorscore=0 mlxlogscore=890 bulkscore=0 mlxscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2208230046 X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham 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 On Tue, 2022-08-23 at 09:25 +0200, Janosch Frank wrote: > On 8/19/22 14:29, Pierre Morel wrote: > > We have a cross dependency between KVM and VFIO when using > > s390 vfio_pci_zdev extensions for PCI passthrough > > To be able to keep both subsystem modular we add a registering > > hook inside the S390 core code. > > > > This fixes a build problem when VFIO is built-in and KVM is built > > as a module. > > > > Reported-by: Randy Dunlap > > Reported-by: kernel test robot > > Reviewed-by: Matthew Rosato > > Reviewed-by: Niklas Schnelle > > Signed-off-by: Pierre Morel > > Fixes: 09340b2fca007 ("KVM: s390: pci: add routines to start/stop interpretive execution") > > Cc: > > Acked-by: Janosch Frank > > @Niklas @Matt: Since the patches that introduced the PCI interpretation > went via the KVM tree I'll also move this patch via the KVM tree. Sounds good, thanks.