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Wed, 15 Nov 2023 18:46:22 +0000 (GMT) Message-ID: <1f305e04eb30afd32f998d36e90c82a3f5314886.camel@linux.ibm.com> Subject: Re: [PATCH v6 17/21] vfio/ccw: Make vfio cdev pre-openable by passing a file handle From: Eric Farman To: Zhenzhong Duan , qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, eric.auger@redhat.com, peterx@redhat.com, jasowang@redhat.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, chao.p.peng@intel.com, Matthew Rosato , Thomas Huth , "open list:vfio-ccw" Date: Wed, 15 Nov 2023 13:46:21 -0500 In-Reply-To: <20231114100955.1961974-18-zhenzhong.duan@intel.com> References: <20231114100955.1961974-1-zhenzhong.duan@intel.com> <20231114100955.1961974-18-zhenzhong.duan@intel.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.48.4 (3.48.4-1.fc38) MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: Wm3Fz-ynpiKxA1vw5n_kMd7RO8feDMH8 X-Proofpoint-ORIG-GUID: eNXmoHysnpW4_nkSOPMOA7paXm3g8Yal X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-15_18,2023-11-15_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 spamscore=0 priorityscore=1501 malwarescore=0 mlxlogscore=736 suspectscore=0 clxscore=1015 bulkscore=0 adultscore=0 lowpriorityscore=0 phishscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311150147 Received-SPF: pass client-ip=148.163.158.5; envelope-from=farman@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 On Tue, 2023-11-14 at 18:09 +0800, Zhenzhong Duan wrote: > This gives management tools like libvirt a chance to open the vfio > cdev with privilege and pass FD to qemu. This way qemu never needs > to have privilege to open a VFIO or iommu cdev node. >=20 > Signed-off-by: Zhenzhong Duan > Reviewed-by: Matthew Rosato > --- > =C2=A0hw/vfio/ccw.c | 25 ++++++++++++++++++++++--- > =C2=A01 file changed, 22 insertions(+), 3 deletions(-) Reviewed-by: Eric Farman