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Fri, 3 Jul 2026 07:52:50 +0000 (GMT) From: Narayana Murty N To: alex@shazbot.org, dmatlack@google.com, shuah@kernel.org Cc: amastro@fb.com, rananta@google.com, nnmlinux@linux.ibm.com, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, vaibhav@linux.ibm.com, sbhat@linux.ibm.com, harshpb@linux.ibm.com Subject: [RFC PATCH 2/6] selftests/vfio: add sPAPR TCE v2 IOMMU mode Date: Thu, 2 Jul 2026 23:28:02 -0400 Message-ID: <20260703032806.40946-3-nnmlinux@linux.ibm.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20260703032806.40946-1-nnmlinux@linux.ibm.com> References: <20260703032806.40946-1-nnmlinux@linux.ibm.com> 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-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzAzMDA3MyBTYWx0ZWRfX6qqmB9amqjhc f4gOlUOhSeikgrTzAmWB00KJfygLvOUm56+xA8JaELL5hgXbmyn64XYatk5LArVxvrux/T3kTuc Vp2dkkQp8Q2oaJYW24WxzyJ9dV32EptxWsb5aGfPDjjKPRsb4f3yT1ax/d90OlIGmH2d+o8Nxjy lkMXJXPoNhZsZS96fL0+EQTrP6XGBUTcbNUPMX2NOvdOE9Szb2c8warrMnmNO7bWG2vNY6hw+WQ +io5crLdXjEItUhHjqSlpwKmtDxtDCHOlhNvtPL81lufdWeFtBPbrLdQ3l4h45tkBOIXYM6Bxa9 0rQ4JJajwvX3Q23EwFIcAWUe/HzmuyIVFs+9leM5QH/WF9mxjiR/qs4R3CmwKNE/XxLfsQHGQ80 eTMGEEbP1r6c1/t6Fky1uOvij7MOTbEBhvSufFac+jFZNCqKkjeaF1tr/jFkclREpVXYfXKXNLZ jPr26rzWmYebdTpCFPA== X-Proofpoint-GUID: sGRaQZh7mZSk4A20vXcF7oPzzIkc6Fpi X-Authority-Analysis: v=2.4 cv=Z8bc2nRA c=1 sm=1 tr=0 ts=6a476a59 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=ixzhQv5MsJcLbGTr2AsA:9 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzAzMDA3MyBTYWx0ZWRfXzn22yG9xl9wb iHz1cGM6q2Kcek64VxztLfMAg1RgH5iYexfJXzUj3rO2pT3GqNXysGBv2Dgu2mU1sV9JzwVnUIs 09W+CzDQvT7UPHSVsHKOrq1P0tpGXI8= X-Proofpoint-ORIG-GUID: hSMK4AXGde4Va8ytBiyz6Old_5ZRpjoE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-07-03_02,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 adultscore=0 spamscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 phishscore=0 bulkscore=0 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607030073 Add a PowerPC-specific VFIO selftest IOMMU mode for sPAPR TCE v2. The new mode uses the legacy VFIO container interface with VFIO_SPAPR_TCE_v2_IOMMU. It does not use iommufd or VFIO cdev. On PowerPC, generate the sPAPR TCE v2 fixture variant so the tests exercise the backend that is valid for this platform. Signed-off-by: Narayana Murty N --- tools/testing/selftests/vfio/lib/include/libvfio/iommu.h | 8 ++++++++ tools/testing/selftests/vfio/lib/iommu.c | 7 +++++++ 2 files changed, 15 insertions(+) diff --git a/tools/testing/selftests/vfio/lib/include/libvfio/iommu.h b/tools/testing/selftests/vfio/lib/include/libvfio/iommu.h index e9a3386a4719..ba027a7270d0 100644 --- a/tools/testing/selftests/vfio/lib/include/libvfio/iommu.h +++ b/tools/testing/selftests/vfio/lib/include/libvfio/iommu.h @@ -66,17 +66,25 @@ struct iommu_iova_range *iommu_iova_ranges(struct iommu *iommu, u32 *nranges); #define MODE_IOMMUFD_COMPAT_TYPE1 "iommufd_compat_type1" #define MODE_IOMMUFD_COMPAT_TYPE1V2 "iommufd_compat_type1v2" #define MODE_IOMMUFD "iommufd" +#ifdef __powerpc__ +#define MODE_VFIO_SPAPR_TCE_V2_IOMMU "vfio_spapr_tce_v2_iommu" +#endif /* * Generator for VFIO selftests fixture variants that replicate across all * possible IOMMU modes. Tests must define FIXTURE_VARIANT_ADD_IOMMU_MODE() * which should then use FIXTURE_VARIANT_ADD() to create the variant. */ +#ifdef __powerpc__ +#define FIXTURE_VARIANT_ADD_ALL_IOMMU_MODES(...) \ +FIXTURE_VARIANT_ADD_IOMMU_MODE(vfio_spapr_tce_v2_iommu, ##__VA_ARGS__) +#else #define FIXTURE_VARIANT_ADD_ALL_IOMMU_MODES(...) \ FIXTURE_VARIANT_ADD_IOMMU_MODE(vfio_type1_iommu, ##__VA_ARGS__); \ FIXTURE_VARIANT_ADD_IOMMU_MODE(vfio_type1v2_iommu, ##__VA_ARGS__); \ FIXTURE_VARIANT_ADD_IOMMU_MODE(iommufd_compat_type1, ##__VA_ARGS__); \ FIXTURE_VARIANT_ADD_IOMMU_MODE(iommufd_compat_type1v2, ##__VA_ARGS__); \ FIXTURE_VARIANT_ADD_IOMMU_MODE(iommufd, ##__VA_ARGS__) +#endif #endif /* SELFTESTS_VFIO_LIB_INCLUDE_LIBVFIO_IOMMU_H */ diff --git a/tools/testing/selftests/vfio/lib/iommu.c b/tools/testing/selftests/vfio/lib/iommu.c index 035dac069d60..e86457a715bf 100644 --- a/tools/testing/selftests/vfio/lib/iommu.c +++ b/tools/testing/selftests/vfio/lib/iommu.c @@ -47,6 +47,13 @@ static const struct iommu_mode iommu_modes[] = { { .name = MODE_IOMMUFD, }, +#ifdef __powerpc__ + { + .name = MODE_VFIO_SPAPR_TCE_V2_IOMMU, + .container_path = "/dev/vfio/vfio", + .iommu_type = VFIO_SPAPR_TCE_v2_IOMMU, + }, +#endif }; static const struct iommu_mode *lookup_iommu_mode(const char *iommu_mode) -- 2.51.1