diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2024-04-30 14:21:41 -0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-05-01 15:33:53 +0100 |
| commit | 56e1a4cc2588a7cb9664457a62fd7a77e005aa01 (patch) | |
| tree | da4c3b98d2d7a12045e60f46e5f160afdb215605 /drivers/iommu/Kconfig | |
| parent | 04905c17f64890311e6b5a5065d8c220602712e5 (diff) | |
iommu/arm-smmu-v3: Add unit tests for arm_smmu_write_entry
Add tests for some of the more common STE update operations that we expect
to see, as well as some artificial STE updates to test the edges of
arm_smmu_write_entry. These also serve as a record of which common
operation is expected to be hitless, and how many syncs they require.
arm_smmu_write_entry implements a generic algorithm that updates an STE/CD
to any other abritrary STE/CD configuration. The update requires a
sequence of write+sync operations with some invariants that must be held
true after each sync. arm_smmu_write_entry lends itself well to
unit-testing since the function's interaction with the STE/CD is already
abstracted by input callbacks that we can hook to introspect into the
sequence of operations. We can use these hooks to guarantee that
invariants are held throughout the entire update operation.
Link: https://lore.kernel.org/r/20240106083617.1173871-3-mshavit@google.com
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Michael Shavit <mshavit@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/9-v9-5040dc602008+177d7-smmuv3_newapi_p2_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/Kconfig')
| -rw-r--r-- | drivers/iommu/Kconfig | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 13d9cb4ba52c..66325210c8c9 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -401,9 +401,9 @@ config ARM_SMMU_V3 Say Y here if your system includes an IOMMU device implementing the ARM SMMUv3 architecture. +if ARM_SMMU_V3 config ARM_SMMU_V3_SVA bool "Shared Virtual Addressing support for the ARM SMMUv3" - depends on ARM_SMMU_V3 select IOMMU_SVA select IOMMU_IOPF select MMU_NOTIFIER @@ -414,6 +414,17 @@ config ARM_SMMU_V3_SVA Say Y here if your system supports SVA extensions such as PCIe PASID and PRI. +config ARM_SMMU_V3_KUNIT_TEST + bool "KUnit tests for arm-smmu-v3 driver" if !KUNIT_ALL_TESTS + depends on KUNIT + depends on ARM_SMMU_V3_SVA + default KUNIT_ALL_TESTS + help + Enable this option to unit-test arm-smmu-v3 driver functions. + + If unsure, say N. +endif + config S390_IOMMU def_bool y if S390 && PCI depends on S390 && PCI |