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Thu, 25 Jan 2024 12:08:26 +0000 (GMT) Subject: [PATCH 0/2] powerpc: iommu: Fix the vfio-pci bind and unbind issues From: Shivaprasad G Bhat To: iommu@lists.linux.dev, linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, aneesh.kumar@kernel.org, naveen.n.rao@linux.ibm.com, jgg@ziepe.ca, jroedel@suse.de, tpearson@raptorengineering.com, aik@amd.com, bgray@linux.ibm.com, gregkh@linuxfoundation.org, sbhat@linux.ibm.com, gbatra@linux.vnet.ibm.com, vaibhav@linux.ibm.com Date: Thu, 25 Jan 2024 06:08:25 -0600 Message-ID: <170618450592.3805.8216395093813382208.stgit@ltcd48-lp2.aus.stglab.ibm.com> User-Agent: StGit/1.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: LC7nRvPzH-Kt8toPgx8QCQGBERAvb_dp X-Proofpoint-GUID: Hcp7wE1MLHbbbko411CUT4UzxRGgmrXe X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-25_06,2024-01-25_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=790 spamscore=0 phishscore=0 adultscore=0 mlxscore=0 lowpriorityscore=0 priorityscore=1501 clxscore=1011 suspectscore=0 bulkscore=0 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401250084 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1789064192348314401 X-GMAIL-MSGID: 1789064192348314401 On PowerNV and pSeries machines, the bind and unbind of vfio-pci is broken with the below commits. 2ad56efa80db ("powerpc/iommu: Setup a default domain and remove set_platform_dma_ops") 0f6a90436a57 ("iommu: Do not use IOMMU_DOMAIN_DMA if CONFIG_IOMMU_DMA is not enabled") Details of the same are in the following patch descriptions. --- Shivaprasad G Bhat (2): powerpc: iommu: Bring back table group release_ownership() call iommu: Fix the domain type checks when default_domain is set arch/powerpc/kernel/iommu.c | 16 +++++++++++++--- drivers/iommu/iommu.c | 14 ++++++++++---- 2 files changed, 23 insertions(+), 7 deletions(-) -- Signature