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[RFC,27/33] vfio: selftests: Add iommufd_compat_type1{,v2} modes

Message ID 20250523233018.1702151-28-dmatlack@google.com
State New
Headers show
Series [RFC,01/33] selftests: Create tools/testing/selftests/vfio | expand

Commit Message

David Matlack May 23, 2025, 11:30 p.m. UTC 
Add new IOMMU modes for using iommufd in compatibility mode with
VFIO_TYPE1_IOMMU and VFIO_TYPE1v2_IOMMU.

In these modes, VFIO selftests will open /dev/iommu and treats it as a
container FD (as if it had opened /dev/vfio/vfio) and the kernel
translates the container ioctls to iommufd calls transparently.

Signed-off-by: David Matlack <dmatlack@google.com>
---
 tools/testing/selftests/vfio/lib/vfio_pci_device.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/tools/testing/selftests/vfio/lib/vfio_pci_device.c b/tools/testing/selftests/vfio/lib/vfio_pci_device.c
index b349d901cfdc..205bbfb3d54e 100644
--- a/tools/testing/selftests/vfio/lib/vfio_pci_device.c
+++ b/tools/testing/selftests/vfio/lib/vfio_pci_device.c
@@ -371,6 +371,16 @@  static const struct vfio_iommu_mode iommu_modes[] = {
 		.container_path = "/dev/vfio/vfio",
 		.group_iommu_type = VFIO_TYPE1v2_IOMMU,
 	},
+	{
+		.name = "iommufd_compat_type1",
+		.container_path = "/dev/iommu",
+		.group_iommu_type = VFIO_TYPE1_IOMMU,
+	},
+	{
+		.name = "iommufd_compat_type1v2",
+		.container_path = "/dev/iommu",
+		.group_iommu_type = VFIO_TYPE1v2_IOMMU,
+	},
 };
 
 const char *default_iommu_mode = "vfio_type1_iommu";