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Fri, 11 Apr 2025 20:24:33 +0000 (GMT) From: Matthew Rosato To: joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, gerald.schaefer@linux.ibm.com, schnelle@linux.ibm.com Cc: hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, svens@linux.ibm.com, borntraeger@linux.ibm.com, clg@redhat.com, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH v5 0/5] iommu/s390: support additional table regions Date: Fri, 11 Apr 2025 16:24:28 -0400 Message-ID: <20250411202433.181683-1-mjrosato@linux.ibm.com> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: gBIZNC05wFANwEVJbwq4M8do_xbDqVA6 X-Proofpoint-ORIG-GUID: gBIZNC05wFANwEVJbwq4M8do_xbDqVA6 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1095,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-04-11_08,2025-04-10_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 adultscore=0 malwarescore=0 impostorscore=0 lowpriorityscore=0 spamscore=0 mlxscore=0 suspectscore=0 mlxlogscore=708 clxscore=1015 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2504110127 The series extends the maximum table size allowed by s390-iommu by increasing the number of table regions supported. It also adds logic to construct the table use the minimum number of regions based upon aperture calculation. Changes for v5: - fix GFP_KERNEL under spinlock in patch 5 Changes for v4: - rebase onto master/merge window - convert patches 3 per Niklas to remove gotos - convert patch 4 to also remove gotos - add review tags Changes for v3: - rebase onto iommu-next - move IOTA region type setting into s390-iommu - remove origin_type and max_table_size from zdev - adjust reserved region calculation to be dependent on the domain Changes for v2: - rebase onto 6.13 - remove 'iommu/s390: add basic routines for region 1st and 2nd tables' and put routines in first patch that uses each. No functional change. Matthew Rosato (5): iommu/s390: set appropriate IOTA region type iommu/s390: support cleanup of additional table regions iommu/s390: support iova_to_phys for additional table regions iommu/s390: support map/unmap for additional table regions iommu/s390: allow larger region tables arch/s390/include/asm/pci_dma.h | 3 + drivers/iommu/s390-iommu.c | 345 ++++++++++++++++++++++++++++---- 2 files changed, 314 insertions(+), 34 deletions(-) -- 2.49.0