From: Xu Yilun Date: Wed, 16 Jul 2025 07:03:48 +0000 (+0800) Subject: iommufd/selftest: Add coverage for vdevice tombstone X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=39a369c34152e1b76895fda37aa586dfb9b2cf38;p=thirdparty%2Fkernel%2Flinux.git iommufd/selftest: Add coverage for vdevice tombstone This tests the flow to tombstone vdevice when idevice is to be unbound before vdevice destruction. The expected results of the tombstone are: - The vdevice ID can't be reused anymore (not tested in this patch). - Even ioctl(IOMMU_DESTROY) can't free the vdevice ID. - iommufd_fops_release() can still free everything. Link: https://patch.msgid.link/r/20250716070349.1807226-8-yilun.xu@linux.intel.com Reviewed-by: Nicolin Chen Tested-by: Nicolin Chen Signed-off-by: Xu Yilun Signed-off-by: Jason Gunthorpe --- diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index d16fd9928b31f..4de9ce0666921 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -3142,6 +3142,20 @@ TEST_F(iommufd_viommu, hw_queue) test_ioctl_ioas_unmap(iova, PAGE_SIZE); } +TEST_F(iommufd_viommu, vdevice_tombstone) +{ + uint32_t viommu_id = self->viommu_id; + uint32_t dev_id = self->device_id; + uint32_t vdev_id = 0; + + if (!dev_id) + SKIP(return, "Skipping test for variant no_viommu"); + + test_cmd_vdevice_alloc(viommu_id, dev_id, 0x99, &vdev_id); + test_ioctl_destroy(self->stdev_id); + EXPECT_ERRNO(ENOENT, _test_ioctl_destroy(self->fd, vdev_id)); +} + FIXTURE(iommufd_device_pasid) { int fd;