[PATCH 3/3] iommufd/selftest: Test dirty tracking on PASID

Zhenzhong Duan
2026-02-05T02:34:24Z

Add test case for dirty tracking on a domain attached to PASID, also
confirm attachment to PASID fail if device doesn't support dirty tracking.

Suggested-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
---
tools/testing/selftests/iommu/iommufd.c | 27 +++++++++++++++++++++++++
1 file changed, 27 insertions(+)

diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c
index dadad277f4eb..d1fe5dbc2813 100644
--- a/tools/testing/selftests/iommu/iommufd.c
+++ b/tools/testing/selftests/iommu/iommufd.c
@@ -2275,6 +2275,33 @@ TEST_F(iommufd_dirty_tracking, set_dirty_tracking)
test_ioctl_destroy(hwpt_id);
}

+TEST_F(iommufd_dirty_tracking, pasid_set_dirty_tracking)
+{
+ uint32_t stddev_id, ioas_id, hwpt_id, pasid = 100;
+ uint32_t dev_flags = MOCK_FLAGS_DEVICE_PASID;
+
+ /* Regular case */
+ test_cmd_hwpt_alloc(self->idev_id, self->ioas_id,
+ IOMMU_HWPT_ALLOC_PASID | IOMMU_HWPT_ALLOC_DIRTY_TRACKING,
+ &hwpt_id);
+ test_cmd_mock_domain_flags(hwpt_id, dev_flags, &stddev_id, NULL, NULL);
+ ASSERT_EQ(0, _test_cmd_pasid_attach(self->fd, stddev_id, pasid, hwpt_id));
+ test_cmd_set_dirty_tracking(hwpt_id, true);
+ test_cmd_set_dirty_tracking(hwpt_id, false);
+ ASSERT_EQ(0, _test_cmd_pasid_detach(self->fd, stddev_id, pasid));
+
+ test_ioctl_destroy(stddev_id);
+
+ /* IOMMU device does not support dirty tracking */
+ dev_flags |= MOCK_FLAGS_DEVICE_NO_DIRTY;
+ test_ioctl_ioas_alloc(&ioas_id);
+ test_cmd_mock_domain_flags(ioas_id, dev_flags, &stddev_id, NULL, NULL);
+ EXPECT_ERRNO(EINVAL, _test_cmd_pasid_attach(self->fd, stddev_id, pasid, hwpt_id));
+
+ test_ioctl_destroy(stddev_id);
+ test_ioctl_destroy(hwpt_id);
+}
+
TEST_F(iommufd_dirty_tracking, device_dirty_capability)
{
uint32_t caps = 0;
--
2.47.3