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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20260205023405.41583-4-zhenzhong.duan@intel.com>
Date: Wed,  4 Feb 2026 21:34:04 -0500
From: Zhenzhong Duan <zhenzhong.duan@...el.com>
To: linux-kernel@...r.kernel.org,
	iommu@...ts.linux.dev
Cc: dwmw2@...radead.org,
	baolu.lu@...ux.intel.com,
	joro@...tes.org,
	will@...nel.org,
	robin.murphy@....com,
	jgg@...pe.ca,
	kevin.tian@...el.com,
	Zhenzhong Duan <zhenzhong.duan@...el.com>,
	linux-kselftest@...r.kernel.org
Subject: [PATCH 3/3] iommufd/selftest: Test dirty tracking on PASID

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@...ux.intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@...el.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