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Hellwig , iommu@lists.linux.dev, Joao Martins , Kevin Tian , kvm@vger.kernel.org, linux-mm@kvack.org, Pasha Tatashin , Peter Xu , Ryan Roberts , Sean Christopherson , Tina Zhang Subject: Re: [PATCH 09/16] iommupt: Add a kunit test for Generic Page Table and the IOMMU implementation Message-ID: <20240819141619.GA3094258@nvidia.com> References: <9-v1-01fa10580981+1d-iommu_pt_jgg@nvidia.com> <292a7ed2-a2a0-4dce-9741-b7169402b290@quicinc.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <292a7ed2-a2a0-4dce-9741-b7169402b290@quicinc.com> X-ClientProxiedBy: MN0P222CA0027.NAMP222.PROD.OUTLOOK.COM (2603:10b6:208:531::35) To CH3PR12MB7763.namprd12.prod.outlook.com (2603:10b6:610:145::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PR12MB7763:EE_|MN2PR12MB4064:EE_ X-MS-Office365-Filtering-Correlation-Id: 78e84a69-fa1c-47cc-2b0f-08dcc0597f45 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 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/XJDPv8AWt1v2qr7TQY3BeybxgOZZD7pXGrTyUIcr4mW0ABALyfqz+A/9MnYmA2iIhT6hYcsa7B20wkUABVBCMlogUvKrm8FmAy6Y+hdYybBgJR8c6+nBFbRxVWSDYVTalz2Pkj1+I+IziVBm/+3RZw9Um8ivNKI590qlut0pH/6o3MCfjEj9Jcve3FI1mQxg9TjlGj/g0F7G7WnqElDkmYqcSsfZMuNs0u8eG2JUFfUymkrFA+ZyvYxLFM1b+lNzfBxpBo6rGDEpmYwmwLUBPIM8JplBT/WiYGPqTcni5KF0e2tASo+j21LASYW4BHvR6kGXY2bU+gJawiNF+UW0gi51/066kDYkMz11 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Aug 16, 2024 at 10:55:50AM -0700, Jeff Johnson wrote: > On 8/15/24 08:11, Jason Gunthorpe wrote: > > This intends to have high coverage of the page table format functions and > > the IOMMU implementation itself, exercising the various corner cases. > > > > The kunit can be run in the kunit framework, using commands like: > > > > tools/testing/kunit/kunit.py run --build_dir build_kunit_arm64 --arch arm64 --make_options LD=ld.lld-18 --make_options 'CC=clang-18 --target=aarch64-linux-gnu' --kunitconfig ./drivers/iommu/generic_pt/.kunitconfig > > tools/testing/kunit/kunit.py run --build_dir build_kunit_uml --make_options CC=gcc-13 --kunitconfig ./drivers/iommu/generic_pt/.kunitconfig --kconfig_add CONFIG_WERROR=n > > tools/testing/kunit/kunit.py run --build_dir build_kunit_x86_64 --arch x86_64 --kunitconfig ./drivers/iommu/generic_pt/.kunitconfig > > tools/testing/kunit/kunit.py run --build_dir build_kunit_i386 --arch i386 --kunitconfig ./drivers/iommu/generic_pt/.kunitconfig > > tools/testing/kunit/kunit.py run --build_dir build_kunit_i386pae --arch i386 --kunitconfig ./drivers/iommu/generic_pt/.kunitconfig --kconfig_add CONFIG_X86_PAE=y > > > > There are several interesting corner cases on the 32 bit platforms that > > need checking. > > > > FIXME: further improve the tests > > > > Signed-off-by: Jason Gunthorpe > > --- > ... > > > +kunit_test_suites(&NS(iommu_suite)); > > + > > +MODULE_LICENSE("GPL"); > > +MODULE_IMPORT_NS(GENERIC_PT_IOMMU); > > Since commit 1fffe7a34c89 ("script: modpost: emit a warning when the > description is missing"), a module without a MODULE_DESCRIPTION() will > result in a warning when built with make W=1. Recently, multiple > developers have been eradicating these warnings treewide, and very few > are left, so please don't introduce a new one :) Yep, I fixed them all Thanks, Jason