Re: [PATCH v4 4/4] iommufd/selftest: Add coverage for IOMMU_GET_HW_INFO ioctl

[Jason Gunthorpe]

On Mon, Jul 24, 2023 at 03:59:36AM -0700, Yi Liu wrote:
> diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h
> index 70353e68e599..f13df84f6b42 100644
> --- a/tools/testing/selftests/iommu/iommufd_utils.h
> +++ b/tools/testing/selftests/iommu/iommufd_utils.h
> @@ -348,3 +348,29 @@ static void teardown_iommufd(int fd, struct __test_metadata *_metadata)
>  	})
>  
>  #endif
> +
> +static int _test_cmd_get_hw_info(int fd, __u32 device_id,
> +				 __u32 data_len, void *data)

void * data,size_t data_len

Jason