On Wed, Mar 08, 2023 at 11:53:58PM -0800, Yi Liu wrote: > diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h > index da1898a9128f..578691602d94 100644 > --- a/drivers/iommu/iommufd/iommufd_test.h > +++ b/drivers/iommu/iommufd/iommufd_test.h > @@ -100,4 +100,19 @@ struct iommu_test_cmd { > }; > #define IOMMU_TEST_CMD _IO(IOMMUFD_TYPE, IOMMUFD_CMD_BASE + 32) > > +/* Mock structs for IOMMU_DEVICE_GET_HW_INFO ioctl */ > +#define IOMMU_HW_INFO_TYPE_SELFTEST 0xfeedbeef > +#define IOMMU_HW_INFO_SELFTEST_REGVAL 0xdeadbeef > + > +/** > + * struct iommu_hw_info_selftest > + * > + * @flags: Must be set to 0 > + * @test_reg: Pass IOMMU_HW_INFO_SELFTEST_REGVAL to user selftest program > + */ Probably don't need the comment, it is misleading > +struct iommu_hw_info_selftest { struct iommu_test_hw_info Jason