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SubjectRE: [RFC 6/7] iommufd/selftest: Add test coverage for SIOV virtual device
Date
> From: Liu, Yi L <yi.l.liu@intel.com>
> Sent: Monday, October 9, 2023 4:51 PM
>
> @@ -2071,6 +2083,43 @@ TEST_F(iommufd_device_pasid, pasid_attach)
>
> IOMMU_HWPT_ALLOC_DATA_SELFTEST,
> &data, sizeof(data));
>
> + if (variant->pasid) {
> + uint32_t new_hwpt_id = 0;
> +
> + ASSERT_EQ(0,
> + test_cmd_pasid_check_domain(self->fd,
> + self->stdev_id,
> + variant->pasid,
> + self->hwpt_id,
> + &result));
> + EXPECT_EQ(1, result);
> + test_cmd_hwpt_alloc(self->device_id, self->ioas_id,
> + 0, &new_hwpt_id);
> + test_cmd_mock_domain_replace(self->stdev_id,
> + new_hwpt_id);
> + ASSERT_EQ(0,
> + test_cmd_pasid_check_domain(self->fd,
> + self->stdev_id,
> + variant->pasid,
> + new_hwpt_id,
> + &result));
> + EXPECT_EQ(1, result);
> +
> + /*
> + * Detach hwpt from variant->pasid, and check if the
> + * variant->pasid has null domain
> + */
> + test_cmd_pasid_detach(variant->pasid);
> + ASSERT_EQ(0,
> + test_cmd_pasid_check_domain(self->fd,
> + self->stdev_id,
> + variant->pasid,
> + 0, &result));
> + EXPECT_EQ(1, result);
> +
> + test_ioctl_destroy(new_hwpt_id);
> + }
> +

I wonder whether above better reuses the device attach/replace cases
given default_pasid is hidden inside iommufd_device. this pasid_attach
case is more for testing user pasids on a iommufd_device which hasn't
yet been supported by SIOV device?

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